diff options
Diffstat (limited to '')
| -rw-r--r-- | qa/rbd/krbd_huge_image.t | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/qa/rbd/krbd_huge_image.t b/qa/rbd/krbd_huge_image.t new file mode 100644 index 00000000..9fff1d9d --- /dev/null +++ b/qa/rbd/krbd_huge_image.t @@ -0,0 +1,41 @@ + + $ get_field() { + > rbd info --format=json $1 | python -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 |