qa: krbd whole-object-discard test

Signed-off-by: Ilya Dryomov <[email protected]>

qa/rbd/krbd_whole_object_discard.t

@@ -0,0 +1,143 @@
+
+  $ get_block_name_prefix() {
+  >     rbd info --format=json $1 | python -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 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
+  $ blkdiscard -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
+  $ blkdiscard -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
+  $ blkdiscard -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
+  $ blkdiscard -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

qa/suites/krbd/basic/tasks/krbd_whole_object_discard.yaml

@@ -0,0 +1,5 @@
+tasks:
+- cram:
+    clients:
+      client.0:
+      - http://git.ceph.com/?p={repo};a=blob_plain;hb={branch};f=qa/rbd/krbd_whole_object_discard.t