diff options
Diffstat (limited to 'tests')
-rw-r--r-- | tests/bugs/bug-963678.t | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/bugs/bug-963678.t b/tests/bugs/bug-963678.t new file mode 100644 index 00000000000..14d56657940 --- /dev/null +++ b/tests/bugs/bug-963678.t @@ -0,0 +1,56 @@ +#!/bin/bash +# +# Bug 963678 - Test discard functionality +# +# Test that basic discard (hole punch) functionality works via the fallocate +# command line tool. Hole punch deallocates a region of a file, creating a hole +# and a zero-filled data region. We verify that hole punch works, frees blocks +# and that subsequent reads do not read stale data (caches are invalidated). +# +# NOTE: fuse fallocate is known to be broken with regard to cache invalidation +# up to 3.9.0 kernels. Therefore, FOPEN_KEEP_CACHE is not used in this +# test (opens will invalidate the fuse cache). +### + +. $(dirname $0)/../include.rc +. $(dirname $0)/../fallocate.rc + +cleanup; + +TEST glusterd + +TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}{1,2} +TEST $CLI volume start $V0 + +TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M0 --attribute-timeout=0 --entry-timeout=0 + +# check for fallocate and hole punch support +require_fallocate -l 1m $M0/file +require_fallocate -p -l 512k $M0/file && rm -f $M0/file + +# allocate some blocks, punch a hole and verify block allocation +TEST fallocate -l 1m $M0/file +blksz=`stat --printf=%B $M0/file` +nblks=`stat --printf=%b $M0/file` +TEST [ $(($blksz * $nblks)) -ge 1048576 ] +TEST fallocate -p -o 512k -l 128k $M0/file + +nblks=`stat --printf=%b $M0/file` +# allow some room for xattr blocks +TEST [ $(($blksz * $nblks)) -lt $((917504 + 16384)) ] +TEST unlink $M0/file + +# write some data, punch a hole and verify the file content changes +TEST dd if=/dev/urandom of=$M0/file bs=1M count=1 +TEST cp $M0/file $M0/file.copy.pre +TEST fallocate -p -o 512k -l 128k $M0/file +TEST cp $M0/file $M0/file.copy.post +TEST ! cmp $M0/file.copy.pre $M0/file.copy.post +TEST unlink $M0/file + +TEST umount $M0 + +TEST $CLI volume stop $V0 +TEST $CLI volume delete $V0 + +cleanup; |