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-rw-r--r--qa/rbd/common.sh103
-rw-r--r--qa/rbd/krbd_blkroset.t352
-rw-r--r--qa/rbd/krbd_deep_flatten.t329
-rw-r--r--qa/rbd/krbd_default_map_options.t64
-rw-r--r--qa/rbd/krbd_discard.t398
-rw-r--r--qa/rbd/krbd_discard_4M.t330
-rw-r--r--qa/rbd/krbd_discard_512b.t416
-rw-r--r--qa/rbd/krbd_discard_granularity.t40
-rw-r--r--qa/rbd/krbd_get_features.t31
-rw-r--r--qa/rbd/krbd_huge_image.t41
-rw-r--r--qa/rbd/krbd_modprobe.t10
-rw-r--r--qa/rbd/krbd_msgr_segments.t85
-rw-r--r--qa/rbd/krbd_parent_overlap.t69
-rw-r--r--qa/rbd/krbd_whole_object_zeroout.t143
-rw-r--r--qa/rbd/krbd_zeroout.t422
-rwxr-xr-xqa/rbd/rbd.sh50
16 files changed, 2883 insertions, 0 deletions
diff --git a/qa/rbd/common.sh b/qa/rbd/common.sh
new file mode 100644
index 000000000..232cf45ad
--- /dev/null
+++ b/qa/rbd/common.sh
@@ -0,0 +1,103 @@
+#!/usr/bin/env bash
+
+die() {
+ echo "$*"
+ exit 1
+}
+
+cleanup() {
+ rm -rf $TDIR
+ TDIR=""
+}
+
+set_variables() {
+ # defaults
+ [ -z "$bindir" ] && bindir=$PWD # location of init-ceph
+ if [ -z "$conf" ]; then
+ conf="$basedir/ceph.conf"
+ [ -e $conf ] || conf="/etc/ceph/ceph.conf"
+ fi
+ [ -e $conf ] || die "conf file not found"
+
+ CCONF="ceph-conf -c $conf"
+
+ [ -z "$mnt" ] && mnt="/c"
+ if [ -z "$monhost" ]; then
+ $CCONF -t mon -i 0 'mon addr' > $TDIR/cconf_mon
+ if [ $? -ne 0 ]; then
+ $CCONF -t mon.a -i 0 'mon addr' > $TDIR/cconf_mon
+ [ $? -ne 0 ] && die "can't figure out \$monhost"
+ fi
+ read monhost < $TDIR/cconf_mon
+ fi
+
+ [ -z "$imgsize" ] && imgsize=1024
+ [ -z "$user" ] && user=admin
+ [ -z "$keyring" ] && keyring="`$CCONF keyring`"
+ [ -z "$secret" ] && secret="`ceph-authtool $keyring -n client.$user -p`"
+
+ monip="`echo $monhost | sed 's/:/ /g' | awk '{print $1}'`"
+ monport="`echo $monhost | sed 's/:/ /g' | awk '{print $2}'`"
+
+ [ -z "$monip" ] && die "bad mon address"
+
+ [ -z "$monport" ] && monport=6789
+
+ set -e
+
+ mydir=`hostname`_`echo $0 | sed 's/\//_/g'`
+
+ img_name=test.`hostname`.$$
+}
+
+rbd_load() {
+ modprobe rbd
+}
+
+rbd_create_image() {
+ id=$1
+ rbd create $img_name.$id --size=$imgsize
+}
+
+rbd_add() {
+ id=$1
+ echo "$monip:$monport name=$user,secret=$secret rbd $img_name.$id" \
+ > /sys/bus/rbd/add
+
+ pushd /sys/bus/rbd/devices &> /dev/null
+ [ $? -eq 0 ] || die "failed to cd"
+ devid=""
+ rm -f "$TDIR/rbd_devs"
+ for f in *; do echo $f >> "$TDIR/rbd_devs"; done
+ sort -nr "$TDIR/rbd_devs" > "$TDIR/rev_rbd_devs"
+ while read f < "$TDIR/rev_rbd_devs"; do
+ read d_img_name < "$f/name"
+ if [ "x$d_img_name" == "x$img_name.$id" ]; then
+ devid=$f
+ break
+ fi
+ done
+ popd &> /dev/null
+
+ [ "x$devid" == "x" ] && die "failed to find $img_name.$id"
+
+ export rbd$id=$devid
+ while [ ! -e /dev/rbd$devid ]; do sleep 1; done
+}
+
+rbd_test_init() {
+ rbd_load
+}
+
+rbd_remove() {
+ echo $1 > /sys/bus/rbd/remove
+}
+
+rbd_rm_image() {
+ id=$1
+ rbd rm $imgname.$id
+}
+
+TDIR=`mktemp -d`
+trap cleanup INT TERM EXIT
+set_variables
diff --git a/qa/rbd/krbd_blkroset.t b/qa/rbd/krbd_blkroset.t
new file mode 100644
index 000000000..428636de0
--- /dev/null
+++ b/qa/rbd/krbd_blkroset.t
@@ -0,0 +1,352 @@
+
+Setup
+=====
+
+ $ RO_KEY=$(ceph auth get-or-create-key client.ro mon 'profile rbd' mgr 'profile rbd' osd 'profile rbd-read-only')
+ $ rbd create --size 10 img
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd create --size 1 imgpart
+ $ DEV=$(sudo rbd map imgpart)
+ $ cat <<EOF | sudo sfdisk $DEV >/dev/null 2>&1
+ > unit: sectors
+ > /dev/rbd0p1 : start= 512, size= 512, Id=83
+ > /dev/rbd0p2 : start= 1024, size= 512, Id=83
+ > EOF
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress imgpart@snap
+
+
+Image HEAD
+==========
+
+R/W, unpartitioned:
+
+ $ DEV=$(sudo rbd map img)
+ $ blockdev --getro $DEV
+ 0
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ $ blkdiscard $DEV
+ $ blockdev --setro $DEV
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setro $DEV
+ $ blockdev --getro $DEV
+ 1
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1]
+ $ blkdiscard $DEV
+ blkdiscard: /dev/rbd?: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw $DEV
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw $DEV
+ $ blockdev --getro $DEV
+ 0
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ $ blkdiscard $DEV
+ $ sudo rbd unmap $DEV
+
+R/W, partitioned:
+
+ $ DEV=$(sudo rbd map imgpart)
+ $ udevadm settle
+ $ blockdev --getro ${DEV}p1
+ 0
+ $ blockdev --getro ${DEV}p2
+ 0
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p1
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p2
+ $ blockdev --setro ${DEV}p1
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setro ${DEV}p1
+ $ blockdev --getro ${DEV}p1
+ 1
+ $ blockdev --getro ${DEV}p2
+ 0
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p1
+ blkdiscard: /dev/rbd?p1: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p2
+ $ blockdev --setrw ${DEV}p1
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p1
+ $ blockdev --getro ${DEV}p1
+ 0
+ $ blockdev --getro ${DEV}p2
+ 0
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p1
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p2
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map imgpart)
+ $ udevadm settle
+ $ blockdev --getro ${DEV}p1
+ 0
+ $ blockdev --getro ${DEV}p2
+ 0
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p1
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p2
+ $ blockdev --setro ${DEV}p2
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setro ${DEV}p2
+ $ blockdev --getro ${DEV}p1
+ 0
+ $ blockdev --getro ${DEV}p2
+ 1
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p1
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p2
+ blkdiscard: /dev/rbd?p2: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw ${DEV}p2
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p2
+ $ blockdev --getro ${DEV}p1
+ 0
+ $ blockdev --getro ${DEV}p2
+ 0
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p1
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ $ blkdiscard ${DEV}p2
+ $ sudo rbd unmap $DEV
+
+R/O, unpartitioned:
+
+ $ DEV=$(sudo rbd map --read-only img)
+ $ blockdev --getro $DEV
+ 1
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1]
+ $ blkdiscard $DEV
+ blkdiscard: /dev/rbd?: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw $DEV
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw $DEV # succeeds but effectively ignored
+ $ blockdev --getro $DEV
+ 1
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1]
+ $ blkdiscard $DEV
+ blkdiscard: /dev/rbd?: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ sudo rbd unmap $DEV
+
+R/O, partitioned:
+
+ $ DEV=$(sudo rbd map --read-only imgpart)
+ $ udevadm settle
+ $ blockdev --getro ${DEV}p1
+ 1
+ $ blockdev --getro ${DEV}p2
+ 1
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p1
+ blkdiscard: /dev/rbd?p1: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p2
+ blkdiscard: /dev/rbd?p2: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw ${DEV}p1
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p1 # succeeds but effectively ignored
+ $ blockdev --setrw ${DEV}p2
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p2 # succeeds but effectively ignored
+ $ blockdev --getro ${DEV}p1
+ 1
+ $ blockdev --getro ${DEV}p2
+ 1
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p1
+ blkdiscard: /dev/rbd?p1: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p2
+ blkdiscard: /dev/rbd?p2: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ sudo rbd unmap $DEV
+
+
+Image snapshot
+==============
+
+Unpartitioned:
+
+ $ DEV=$(sudo rbd map img@snap)
+ $ blockdev --getro $DEV
+ 1
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1]
+ $ blkdiscard $DEV
+ blkdiscard: /dev/rbd?: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw $DEV
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw $DEV # succeeds but effectively ignored
+ $ blockdev --getro $DEV
+ 1
+ $ dd if=/dev/urandom of=$DEV bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1]
+ $ blkdiscard $DEV
+ blkdiscard: /dev/rbd?: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ sudo rbd unmap $DEV
+
+Partitioned:
+
+ $ DEV=$(sudo rbd map imgpart@snap)
+ $ udevadm settle
+ $ blockdev --getro ${DEV}p1
+ 1
+ $ blockdev --getro ${DEV}p2
+ 1
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p1
+ blkdiscard: /dev/rbd?p1: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p2
+ blkdiscard: /dev/rbd?p2: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ blockdev --setrw ${DEV}p1
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p1 # succeeds but effectively ignored
+ $ blockdev --setrw ${DEV}p2
+ .*BLKROSET: Permission denied (re)
+ [1]
+ $ sudo blockdev --setrw ${DEV}p2 # succeeds but effectively ignored
+ $ blockdev --getro ${DEV}p1
+ 1
+ $ blockdev --getro ${DEV}p2
+ 1
+ $ dd if=/dev/urandom of=${DEV}p1 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p1': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p1
+ blkdiscard: /dev/rbd?p1: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ dd if=/dev/urandom of=${DEV}p2 bs=1k seek=1 count=1 status=none
+ dd: error writing '/dev/rbd?p2': Operation not permitted (glob)
+ [1]
+ $ blkdiscard ${DEV}p2
+ blkdiscard: /dev/rbd?p2: BLKDISCARD ioctl failed: Operation not permitted (glob)
+ [1]
+ $ sudo rbd unmap $DEV
+
+
+read-only OSD caps
+==================
+
+R/W:
+
+ $ DEV=$(sudo rbd map --id ro --key $(echo $RO_KEY) img)
+ rbd: sysfs write failed
+ rbd: map failed: (1) Operation not permitted
+ [1]
+
+R/O:
+
+ $ DEV=$(sudo rbd map --id ro --key $(echo $RO_KEY) --read-only img)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+Snapshot:
+
+ $ DEV=$(sudo rbd map --id ro --key $(echo $RO_KEY) img@snap)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+R/W, clone:
+
+ $ DEV=$(sudo rbd map --id ro --key $(echo $RO_KEY) cloneimg)
+ rbd: sysfs write failed
+ rbd: map failed: (1) Operation not permitted
+ [1]
+
+R/O, clone:
+
+ $ DEV=$(sudo rbd map --id ro --key $(echo $RO_KEY) --read-only cloneimg)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+
+rw -> ro with open_count > 0
+============================
+
+ $ DEV=$(sudo rbd map img)
+ $ { sleep 10; sudo blockdev --setro $DEV; } &
+ $ dd if=/dev/urandom of=$DEV bs=1k oflag=direct status=noxfer
+ dd: error writing '/dev/rbd?': Operation not permitted (glob)
+ [1-9]\d*\+0 records in (re)
+ [1-9]\d*\+0 records out (re)
+ [1]
+ $ sudo rbd unmap $DEV
+
+
+"-o rw --read-only" should result in read-only mapping
+======================================================
+
+ $ DEV=$(sudo rbd map -o rw --read-only img)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+
+Teardown
+========
+
+ $ rbd snap purge imgpart >/dev/null 2>&1
+ $ rbd rm imgpart >/dev/null 2>&1
+ $ rbd rm cloneimg >/dev/null 2>&1
+ $ rbd snap unprotect img@snap
+ $ rbd snap purge img >/dev/null 2>&1
+ $ rbd rm img >/dev/null 2>&1
+
diff --git a/qa/rbd/krbd_deep_flatten.t b/qa/rbd/krbd_deep_flatten.t
new file mode 100644
index 000000000..486b966d9
--- /dev/null
+++ b/qa/rbd/krbd_deep_flatten.t
@@ -0,0 +1,329 @@
+
+Write:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ xfs_io -c 'pwrite -S 0xab -w 6M 1k' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0600000 abab abab abab abab abab abab abab abab
+ *
+ 0600400 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0600000 abab abab abab abab abab abab abab abab
+ *
+ 0600400 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
+
+Write, whole object:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ xfs_io -d -c 'pwrite -b 4M -S 0xab 4M 4M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000 abab abab abab abab abab abab abab abab
+ *
+ 0800000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000 abab abab abab abab abab abab abab abab
+ *
+ 0800000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
+
+Zeroout:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ fallocate -z -o 6M -l 1k $DEV
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0600000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0600400 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0600000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0600400 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
+
+Zeroout, whole object:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ fallocate -z -o 4M -l 4M $DEV
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
+
+Discard, whole object, empty clone:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ blkdiscard -o 4M -l 4M $DEV
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
+
+Discard, whole object, full clone:
+
+ $ rbd create --size 12M --image-feature layering,deep-flatten img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -w 0 12M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd snap create --no-progress cloneimg@snap
+ $ DEV=$(sudo rbd map cloneimg)
+ $ xfs_io -c 'pwrite -S 0xab -w 0 12M' $DEV >/dev/null
+ $ blkdiscard -o 4M -l 4M $DEV
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000 abab abab abab abab abab abab abab abab
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd flatten --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000 abab abab abab abab abab abab abab abab
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg@snap)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+
+ $ rbd snap rm --no-progress cloneimg@snap
+ $ rbd rm --no-progress cloneimg
diff --git a/qa/rbd/krbd_default_map_options.t b/qa/rbd/krbd_default_map_options.t
new file mode 100644
index 000000000..5dac5d6ae
--- /dev/null
+++ b/qa/rbd/krbd_default_map_options.t
@@ -0,0 +1,64 @@
+Set up
+
+ $ ceph osd pool create rbda
+ pool 'rbda' created
+ $ rbd pool init rbda
+ $ rbd create rbda/image1 --size 1000
+
+Test at map options level
+
+ $ OPTIONS="alloc_size=65536,lock_on_read"
+ $ EXPECTED="${OPTIONS}"
+ $ DEV=$(sudo rbd map rbda/image1 --options ${OPTIONS})
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+Test at global level
+
+ $ OPTIONS="alloc_size=4096,crc"
+ $ EXPECTED="${OPTIONS}"
+ $ rbd config global set global rbd_default_map_options ${OPTIONS}
+ $ DEV=$(sudo rbd map rbda/image1)
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+ $ OPTIONS="alloc_size=65536,lock_on_read"
+ $ EXPECTED="alloc_size=65536,crc,lock_on_read"
+ $ DEV=$(sudo rbd map rbda/image1 --options ${OPTIONS})
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+Test at pool level
+
+ $ OPTIONS="alloc_size=8192,share"
+ $ EXPECTED="${OPTIONS}"
+ $ rbd config pool set rbda rbd_default_map_options ${OPTIONS}
+ $ DEV=$(sudo rbd map rbda/image1)
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+ $ OPTIONS="lock_on_read,alloc_size=65536"
+ $ EXPECTED="alloc_size=65536,lock_on_read,share"
+ $ DEV=$(sudo rbd map rbda/image1 --options ${OPTIONS})
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+Test at image level
+
+ $ OPTIONS="alloc_size=16384,tcp_nodelay"
+ $ EXPECTED="${OPTIONS}"
+ $ rbd config image set rbda/image1 rbd_default_map_options ${OPTIONS}
+ $ DEV=$(sudo rbd map rbda/image1)
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+ $ OPTIONS="lock_on_read,alloc_size=65536"
+ $ EXPECTED="alloc_size=65536,lock_on_read,tcp_nodelay"
+ $ DEV=$(sudo rbd map rbda/image1 --options ${OPTIONS})
+ $ sudo grep -q ${EXPECTED} /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap rbda/image1
+
+Teardown
+
+ $ ceph osd pool rm rbda rbda --yes-i-really-really-mean-it
+ pool 'rbda' removed
diff --git a/qa/rbd/krbd_discard.t b/qa/rbd/krbd_discard.t
new file mode 100644
index 000000000..528e1dc3d
--- /dev/null
+++ b/qa/rbd/krbd_discard.t
@@ -0,0 +1,398 @@
+
+ $ rbd create --size 4M img
+ $ DEV=$(sudo rbd map img)
+
+Zero, < 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 156672 -l 512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 64512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, < 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 163840 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0030000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131072 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 132096 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 37 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589824 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589312 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02d0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 590336 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 00a0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Truncate:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4193792 -l 512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4129280 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128768 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128256 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063744 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063232 -l 131072 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4062720 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 512 -l 4193792 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0010000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Delete:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Empty clone:
+
+ $ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+
+ $ rbd clone img@snap cloneimg1
+ $ DEV=$(sudo rbd map cloneimg1)
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg2
+ $ DEV=$(sudo rbd map cloneimg2)
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg3
+ $ DEV=$(sudo rbd map cloneimg3)
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+Full clone:
+
+ $ rbd clone img@snap cloneimg4
+ $ DEV=$(sudo rbd map cloneimg4)
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 00b0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0340000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0170000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ sudo rbd unmap $DEV
+
+Multiple object requests:
+
+ $ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
+ $ DEV=$(sudo rbd map fancyimg)
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 143360 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 286720 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0008000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0014000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 001c000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0028000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 003c000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0044000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 573440 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0050000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress fancyimg
+ $ rbd rm --no-progress cloneimg4
+ $ rbd rm --no-progress cloneimg3
+ $ rbd rm --no-progress cloneimg2
+ $ rbd rm --no-progress cloneimg1
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_discard_4M.t b/qa/rbd/krbd_discard_4M.t
new file mode 100644
index 000000000..7ed744c11
--- /dev/null
+++ b/qa/rbd/krbd_discard_4M.t
@@ -0,0 +1,330 @@
+
+ $ rbd create --size 4M img
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 img)
+
+Zero, < 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 156672 -l 512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 64512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, < 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 163840 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131072 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 132096 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 37 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589824 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589312 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 590336 -l 2424832 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Truncate:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4193792 -l 512 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03ffe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4129280 -l 65024 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128768 -l 65536 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128256 -l 66048 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03efe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063744 -l 130560 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063232 -l 131072 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4062720 -l 131584 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03dfe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 512 -l 4193792 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0000200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Delete:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Empty clone:
+
+ $ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+
+ $ rbd clone img@snap cloneimg1
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 cloneimg1)
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg2
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 cloneimg2)
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg3
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 cloneimg3)
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+Full clone:
+
+ $ rbd clone img@snap cloneimg4
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 cloneimg4)
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0168000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ sudo rbd unmap $DEV
+
+Multiple object requests:
+
+ $ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 fancyimg)
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 143360 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 286720 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 573440 $DEV
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress fancyimg
+ $ rbd rm --no-progress cloneimg4
+ $ rbd rm --no-progress cloneimg3
+ $ rbd rm --no-progress cloneimg2
+ $ rbd rm --no-progress cloneimg1
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_discard_512b.t b/qa/rbd/krbd_discard_512b.t
new file mode 100644
index 000000000..6669ca8fc
--- /dev/null
+++ b/qa/rbd/krbd_discard_512b.t
@@ -0,0 +1,416 @@
+
+ $ rbd create --size 4M img
+ $ DEV=$(sudo rbd map -o alloc_size=512 img)
+
+Zero, < 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 156672 -l 512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0026400 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0026600 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 64512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 66560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, < 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 163840 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0028000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0038000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131584 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131072 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 131072 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 130560 -l 132096 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 37 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589824 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 589312 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 008fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02dfe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 590336 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Truncate:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4193792 -l 512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03ffe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4129280 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128768 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4128256 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03efe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063744 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4063232 -l 131072 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 4062720 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03dfe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 512 -l 4193792 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0000200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Delete:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Empty clone:
+
+ $ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+
+ $ rbd clone img@snap cloneimg1
+ $ DEV=$(sudo rbd map -o alloc_size=512 cloneimg1)
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg2
+ $ DEV=$(sudo rbd map -o alloc_size=512 cloneimg2)
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg3
+ $ DEV=$(sudo rbd map -o alloc_size=512 cloneimg3)
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+Full clone:
+
+ $ rbd clone img@snap cloneimg4
+ $ DEV=$(sudo rbd map -o alloc_size=512 cloneimg4)
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 720896 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 00b0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0348000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 1474560 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0168000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ sudo rbd unmap $DEV
+
+Multiple object requests:
+
+ $ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
+ $ DEV=$(sudo rbd map -o alloc_size=512 fancyimg)
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 143360 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0023000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 286720 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0046000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ blkdiscard -o 0 -l 573440 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 008c000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress fancyimg
+ $ rbd rm --no-progress cloneimg4
+ $ rbd rm --no-progress cloneimg3
+ $ rbd rm --no-progress cloneimg2
+ $ rbd rm --no-progress cloneimg1
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_discard_granularity.t b/qa/rbd/krbd_discard_granularity.t
new file mode 100644
index 000000000..844643bae
--- /dev/null
+++ b/qa/rbd/krbd_discard_granularity.t
@@ -0,0 +1,40 @@
+
+ $ rbd create --size 20M img
+
+ $ DEV=$(sudo rbd map img)
+ $ blockdev --getiomin $DEV
+ 65536
+ $ blockdev --getioopt $DEV
+ 65536
+ $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+ 65536
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map -o alloc_size=512 img)
+ $ blockdev --getiomin $DEV
+ 512
+ $ blockdev --getioopt $DEV
+ 512
+ $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+ 512
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map -o alloc_size=4194304 img)
+ $ blockdev --getiomin $DEV
+ 4194304
+ $ blockdev --getioopt $DEV
+ 4194304
+ $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+ 4194304
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map -o alloc_size=8388608 img)
+ $ blockdev --getiomin $DEV
+ 4194304
+ $ blockdev --getioopt $DEV
+ 4194304
+ $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+ 4194304
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_get_features.t b/qa/rbd/krbd_get_features.t
new file mode 100644
index 000000000..0c26e9c33
--- /dev/null
+++ b/qa/rbd/krbd_get_features.t
@@ -0,0 +1,31 @@
+
+journaling makes the image only unwritable, rather than both unreadable
+and unwritable:
+
+ $ rbd create --size 1 --image-feature layering,exclusive-lock,journaling img
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone --image-feature layering,exclusive-lock,journaling img@snap cloneimg
+
+ $ DEV=$(sudo rbd map img)
+ rbd: sysfs write failed
+ rbd: map failed: (6) No such device or address
+ [6]
+ $ DEV=$(sudo rbd map --read-only img)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+ $ DEV=$(sudo rbd map cloneimg)
+ rbd: sysfs write failed
+ rbd: map failed: (6) No such device or address
+ [6]
+ $ DEV=$(sudo rbd map --read-only cloneimg)
+ $ blockdev --getro $DEV
+ 1
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_huge_image.t b/qa/rbd/krbd_huge_image.t
new file mode 100644
index 000000000..e0ce6a954
--- /dev/null
+++ b/qa/rbd/krbd_huge_image.t
@@ -0,0 +1,41 @@
+
+ $ get_field() {
+ > rbd info --format=json $1 | python3 -c "import sys, json; print(json.load(sys.stdin)['$2'])"
+ > }
+
+Write to first and last sectors and make sure we hit the right objects:
+
+ $ ceph osd pool create hugeimg 12 >/dev/null 2>&1
+ $ rbd pool init hugeimg
+ $ rbd create --size 4E --object-size 4K --image-feature layering hugeimg/img
+ $ DEV=$(sudo rbd map hugeimg/img)
+ $ xfs_io -c 'pwrite 0 512' $DEV >/dev/null # first sector
+ $ xfs_io -c 'pwrite 4611686018427387392 512' $DEV >/dev/null # last sector
+ $ sudo rbd unmap $DEV
+
+ $ get_field hugeimg/img size
+ 4611686018427387904
+ $ get_field hugeimg/img objects
+ 1125899906842624
+ $ rados -p hugeimg ls | grep $(get_field hugeimg/img block_name_prefix) | sort
+ .*\.0000000000000000 (re)
+ .*\.0003ffffffffffff (re)
+
+Dump first and last megabytes:
+
+ $ DEV=$(sudo rbd map hugeimg/img)
+ $ dd if=$DEV bs=1M count=1 status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0000200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0100000
+ $ dd if=$DEV bs=1M skip=4398046511103 status=none | hexdump
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 00ffe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0100000
+ $ sudo rbd unmap $DEV
+
+ $ ceph osd pool delete hugeimg hugeimg --yes-i-really-really-mean-it >/dev/null 2>&1
diff --git a/qa/rbd/krbd_modprobe.t b/qa/rbd/krbd_modprobe.t
new file mode 100644
index 000000000..a0e04d394
--- /dev/null
+++ b/qa/rbd/krbd_modprobe.t
@@ -0,0 +1,10 @@
+
+ $ sudo modprobe -r rbd
+ $ sudo modprobe -r libceph
+ $ lsmod | grep libceph
+ [1]
+ $ rbd create --size 1 img
+ $ DEV=$(sudo rbd map img)
+ $ sudo grep -q ',key=' /sys/bus/rbd/devices/${DEV#/dev/rbd}/config_info
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_msgr_segments.t b/qa/rbd/krbd_msgr_segments.t
new file mode 100644
index 000000000..b89a921a1
--- /dev/null
+++ b/qa/rbd/krbd_msgr_segments.t
@@ -0,0 +1,85 @@
+
+ $ get_block_name_prefix() {
+ > rbd info --format=json $1 | python3 -c "import sys, json; print(json.load(sys.stdin)['block_name_prefix'])"
+ > }
+
+Short segments:
+
+ $ rbd create --size 12M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -d -c 'pwrite 5120 512' $DEV >/dev/null
+ $ xfs_io -d -c 'pwrite 12577280 512' $DEV >/dev/null
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0001400 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0001600 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0bfea00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0bfec00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress img
+
+Short segment, ceph_msg_data_bio_cursor_init():
+
+ $ rbd create --size 12M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -d -c 'pwrite 0 512' $DEV >/dev/null
+ $ rados -p rbd stat $(get_block_name_prefix img).0000000000000000
+ .* size 512 (re)
+ $ xfs_io -d -c 'pread -b 2M 0 2M' $DEV >/dev/null
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0000200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress img
+
+Short segment, ceph_msg_data_bio_advance():
+
+ $ rbd create --size 12M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -d -c 'pwrite 0 1049088' $DEV >/dev/null
+ $ rados -p rbd stat $(get_block_name_prefix img).0000000000000000
+ .* size 1049088 (re)
+ $ xfs_io -d -c 'pread -b 2M 0 2M' $DEV >/dev/null
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0100200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress img
+
+Cloned bios (dm-snapshot.ko, based on generic/081):
+
+ $ rbd create --size 300M img
+ $ DEV=$(sudo rbd map img)
+ $ sudo vgcreate vg_img $DEV
+ Physical volume "/dev/rbd?" successfully created* (glob)
+ Volume group "vg_img" successfully created
+ $ sudo lvcreate -L 256M -n lv_img vg_img
+ Logical volume "lv_img" created.
+ $ udevadm settle
+ $ sudo mkfs.ext4 -q /dev/mapper/vg_img-lv_img
+ $ sudo lvcreate -L 4M --snapshot -n lv_snap vg_img/lv_img | grep created
+ Logical volume "lv_snap" created.
+ $ udevadm settle
+ $ sudo mount /dev/mapper/vg_img-lv_snap /mnt
+ $ sudo xfs_io -f -c 'pwrite 0 5M' /mnt/file1 >/dev/null
+ $ sudo umount /mnt
+ $ sudo vgremove -f vg_img
+ Logical volume "lv_snap" successfully removed
+ Logical volume "lv_img" successfully removed
+ Volume group "vg_img" successfully removed
+ $ sudo pvremove $DEV
+ Labels on physical volume "/dev/rbd?" successfully wiped* (glob)
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_parent_overlap.t b/qa/rbd/krbd_parent_overlap.t
new file mode 100644
index 000000000..3489d83db
--- /dev/null
+++ b/qa/rbd/krbd_parent_overlap.t
@@ -0,0 +1,69 @@
+
+For reads, only the object extent needs to be reverse mapped:
+
+ $ rbd create --size 5M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite 0 5M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd resize --no-progress --size 12M cloneimg
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0500000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0c00000
+ $ dd if=$DEV iflag=direct bs=4M status=none | hexdump
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0500000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0c00000
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
+
+For writes, the entire object needs to be reverse mapped:
+
+ $ rbd create --size 2M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite 0 1M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+ $ rbd clone img@snap cloneimg
+ $ rbd resize --no-progress --size 8M cloneimg
+ $ DEV=$(sudo rbd map cloneimg)
+ $ xfs_io -c 'pwrite -S 0xef 3M 1M' $DEV >/dev/null
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0100000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0300000 efef efef efef efef efef efef efef efef
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0100000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0300000 efef efef efef efef efef efef efef efef
+ *
+ 0400000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0800000
+ $ sudo rbd unmap $DEV
+ $ rbd rm --no-progress cloneimg
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_whole_object_zeroout.t b/qa/rbd/krbd_whole_object_zeroout.t
new file mode 100644
index 000000000..850c8c968
--- /dev/null
+++ b/qa/rbd/krbd_whole_object_zeroout.t
@@ -0,0 +1,143 @@
+
+ $ get_block_name_prefix() {
+ > rbd info --format=json $1 | python3 -c "import sys, json; print(json.load(sys.stdin)['block_name_prefix'])"
+ > }
+
+ $ rbd create --size 200M img
+ $ DEV=$(sudo rbd map img)
+ $ xfs_io -c 'pwrite -b 4M 0 200M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+
+cloneimg1:
+1 object in an object set, 4M
+25 full object sets
+25 objects in total
+
+ $ rbd clone img@snap cloneimg1
+ $ DEV=$(sudo rbd map cloneimg1)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ fallocate -z -l 100M $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg1)
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+
+cloneimg2:
+7 objects in an object set, 28M
+3 full object sets
+min((100M % 28M) / 512K, 7) = 7 objects in the last object set
+28 objects in total
+
+ $ rbd clone --stripe-unit 512K --stripe-count 7 img@snap cloneimg2
+ $ DEV=$(sudo rbd map cloneimg2)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ fallocate -z -l 100M $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg2)
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+
+cloneimg3:
+23 objects in an object set, 92M
+1 full object set
+min((100M % 92M) / 512K, 23) = 16 objects in the last object set
+39 objects in total
+
+ $ rbd clone --stripe-unit 512K --stripe-count 23 img@snap cloneimg3
+ $ DEV=$(sudo rbd map cloneimg3)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ fallocate -z -l 100M $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg3)
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+
+cloneimg4:
+65 objects in an object set, 260M
+0 full object sets
+min((100M % 260M) / 512K, 65) = 65 objects in the last object set
+65 objects in total
+
+ $ rbd clone --stripe-unit 512K --stripe-count 65 img@snap cloneimg4
+ $ DEV=$(sudo rbd map cloneimg4)
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ fallocate -z -l 100M $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+ $ DEV=$(sudo rbd map cloneimg4)
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 6400000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ c800000
+ $ sudo rbd unmap $DEV
+
+ $ rados -p rbd ls | grep -c $(get_block_name_prefix cloneimg1)
+ 25
+ $ rados -p rbd ls | grep -c $(get_block_name_prefix cloneimg2)
+ 28
+ $ rados -p rbd ls | grep -c $(get_block_name_prefix cloneimg3)
+ 39
+ $ rados -p rbd ls | grep -c $(get_block_name_prefix cloneimg4)
+ 65
+
+ $ rbd rm --no-progress cloneimg4
+ $ rbd rm --no-progress cloneimg3
+ $ rbd rm --no-progress cloneimg2
+ $ rbd rm --no-progress cloneimg1
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/krbd_zeroout.t b/qa/rbd/krbd_zeroout.t
new file mode 100644
index 000000000..10bb230e8
--- /dev/null
+++ b/qa/rbd/krbd_zeroout.t
@@ -0,0 +1,422 @@
+
+ $ rbd create --size 4M img
+ $ DEV=$(sudo rbd map img)
+
+Zero, < 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 156672 -l 512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0026400 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0026600 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131584 -l 64512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131584 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 1 block:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 130560 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 130560 -l 66560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, < 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 163840 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0028000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0038000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131584 -l 130048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131584 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 2 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 131072 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 131072 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0020000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 130560 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 130560 -l 132096 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 001fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Zero, 37 blocks:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 589824 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 589312 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 008fe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02dfe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 590336 -l 2424832 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0090200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 02e0200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+Truncate:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4193792 -l 512 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03ffe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4129280 -l 65024 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4128768 -l 65536 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03f0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4128256 -l 66048 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03efe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4063744 -l 130560 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4063232 -l 131072 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03e0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 4062720 -l 131584 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 03dfe00 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 512 -l 4193792 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0000200 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Delete:
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+Empty clone:
+
+ $ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
+ $ sudo rbd unmap $DEV
+ $ rbd snap create --no-progress img@snap
+ $ rbd snap protect img@snap
+
+ $ rbd clone img@snap cloneimg1
+ $ DEV=$(sudo rbd map cloneimg1)
+ $ fallocate -z -o 720896 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 00b0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0348000 abab abab abab abab abab abab abab abab
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg2
+ $ DEV=$(sudo rbd map cloneimg2)
+ $ fallocate -z -o 1474560 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 abab abab abab abab abab abab abab abab
+ *
+ 0168000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+ $ rbd clone img@snap cloneimg3
+ $ DEV=$(sudo rbd map cloneimg3)
+ $ fallocate -z -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+ $ sudo rbd unmap $DEV
+
+Full clone:
+
+ $ rbd clone img@snap cloneimg4
+ $ DEV=$(sudo rbd map cloneimg4)
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 720896 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 00b0000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0348000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 1474560 -l 2719744 $DEV
+ $ hexdump $DEV
+ 0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 0168000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
+ $ fallocate -z -o 0 -l 4194304 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0400000
+
+ $ sudo rbd unmap $DEV
+
+Multiple object requests:
+
+ $ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
+ $ DEV=$(sudo rbd map fancyimg)
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ fallocate -z -o 0 -l 143360 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0023000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ fallocate -z -o 0 -l 286720 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 0046000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
+ $ fallocate -z -o 0 -l 573440 $DEV
+ $ hexdump $DEV
+ 0000000 0000 0000 0000 0000 0000 0000 0000 0000
+ *
+ 008c000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
+ *
+ 3200000
+
+ $ sudo rbd unmap $DEV
+
+ $ rbd rm --no-progress fancyimg
+ $ rbd rm --no-progress cloneimg4
+ $ rbd rm --no-progress cloneimg3
+ $ rbd rm --no-progress cloneimg2
+ $ rbd rm --no-progress cloneimg1
+ $ rbd snap unprotect img@snap
+ $ rbd snap rm --no-progress img@snap
+ $ rbd rm --no-progress img
diff --git a/qa/rbd/rbd.sh b/qa/rbd/rbd.sh
new file mode 100755
index 000000000..2b7ce8ee2
--- /dev/null
+++ b/qa/rbd/rbd.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -x
+
+basedir=`echo $0 | sed 's/[^/]*$//g'`.
+. $basedir/common.sh
+
+rbd_test_init
+
+
+create_multiple() {
+ for i in `seq 1 10`; do
+ rbd_create_image $i
+ done
+
+ for i in `seq 1 10`; do
+ rbd_add $i
+ done
+ for i in `seq 1 10`; do
+ devname=/dev/rbd`eval echo \\$rbd$i`
+ echo $devname
+ done
+ for i in `seq 1 10`; do
+ devid=`eval echo \\$rbd$i`
+ rbd_remove $devid
+ done
+ for i in `seq 1 10`; do
+ rbd_rm_image $i
+ done
+}
+
+test_dbench() {
+ rbd_create_image 0
+ rbd_add 0
+
+ devname=/dev/rbd$rbd0
+
+ mkfs -t ext3 $devname
+ mount -t ext3 $devname $mnt
+
+ dbench -D $mnt -t 30 5
+ sync
+
+ umount $mnt
+ rbd_remove $rbd0
+ rbd_rm_image 0
+}
+
+create_multiple
+test_dbench
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-08 12:48:57 +0000