1 files changed, 85 insertions, 0 deletions
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