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btrfs-progs: tests: Introduce misc-tests/008-leaf-crossing-stripes 

To check is btrfs-convert create bad filesystem with
leaf across stripes.

It is happened in progs version <=v4.1.2, and fixed by patch titled:
btrfs: convert: Avoid allocating metadata extent crossing stripe boundary
which was merged in v4.2.

Notice thar this testcase can not report error in old version of
btrfs-progs, because "btrfs check" can't check this type of error
in those version, but we have another testcase in fsck-tests, to
check is "btrfs check" support this check.

So, the above 2 testcase together can check leaf-crossing-stripes
bug in all versions.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
[renamed and other minor changes]
Signed-off-by: David Sterba <dsterba@suse.com>
master
Zhao Lei 2015-09-23 15:19:06 +08:00 committed by David Sterba
parent 5f77daa6a1
commit 9e0c8e148d
1 changed files with 25 additions and 0 deletions
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tests/misc-tests/008-leaf-crossing-stripes/test.sh 100755
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#!/bin/bash
# test if btrfs-convert creates a filesystem without leaf crossing stripes
source $TOP/tests/common
check_prereq btrfs-convert
check_prereq btrfs
# In my test, it happened in 514M~560M, 737M~769M, 929M~917M,
# and HAVE_ERROR=((size + 1) / 2) % 2 if size >= 970
#
SIZE_FROM=514
SIZE_END=560
A_PRIME_NUM=17
for ((size = SIZE_FROM; size <= SIZE_END; size += A_PRIME_NUM)); do
run_check truncate -s "$size"M "$IMAGE"
run_check mkfs.ext4 -F "$IMAGE"
run_check $TOP/btrfs-convert "$IMAGE"
run_check_stdout $TOP/btrfs check "$IMAGE" 2>&1 |
grep -q "crossing stripe boundary" &&
_fail "leaf crossing stripes after btrfs-convert"
done
# grep will expectedly fail
exit 0