Hi all,
LTP test df01.sh found different size of loop device in v5.19.
Test uses loop device formatted on various file systems, only XFS fails.
It randomly fails during verifying that loop size usage changes:
grep ${TST_DEVICE} output | grep -q "${total}.*${used}" [1]
How to reproduce:
# PATH="/opt/ltp/testcases/bin:$PATH" df01.sh -f xfs # it needs several tries to hit
df saved output:
Filesystem 1024-blocks Used Available Capacity Mounted on
...
/dev/loop0 256672 16208 240464 7% /tmp/LTP_df01.1kRwoUCCR7/mntpoint
df output:
Filesystem 1024-blocks Used Available Capacity Mounted on
...
tmpfs 201780 0 201780 0% /run/user/0
/dev/loop0 256672 15160 241512 6% /tmp/LTP_df01.1kRwoUCCR7/mntpoint
=> different size
df01 4 TFAIL: 'df -k -P' failed, not expected.
Also 'df -T -P' fails.
It might be a false positive / bug in the test, but it's at least a changed behavior.
I was able to reproduce it on v5.19 distro kernels (openSUSE, Debian).
I haven't bisected (yet), nor checked Jens' git tree (maybe it has been fixed).
Kind regards,
Petr
[1] https://github.com/linux-test-project/ltp/blob/f42f6f3b4671f447b743afe8612917ba4362b8a6/testcases/commands/df/df01.sh#L103-L110
