On 2020/11/26 下午4:56, kernel test robot wrote:
>
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: ccb0edc68b690d0a62e9377ab509eb2f7cb610d3 ("btrfs: stop running all delayed refs during snapshot")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
>
> in testcase: xfstests
> version: xfstests-x86_64-d41dcbd-1_20201116
> with following parameters:
>
> disk: 6HDD
> fs: btrfs
> test: btrfs-group-03
> ucode: 0x28
>
> test-description: xfstests is a regression test suite for xfs and other files ystems.
> test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
>
>
> on test machine: 8 threads Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8G memory
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>
>
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
>
> 2020-11-25 22:50:45 export TEST_DIR=/fs/sdb1
> 2020-11-25 22:50:45 export TEST_DEV=/dev/sdb1
> 2020-11-25 22:50:45 export FSTYP=btrfs
> 2020-11-25 22:50:45 export SCRATCH_MNT=/fs/scratch
> 2020-11-25 22:50:45 mkdir /fs/scratch -p
> 2020-11-25 22:50:45 export SCRATCH_DEV_POOL="/dev/sdb2 /dev/sdb3 /dev/sdb4 /dev/sdb5 /dev/sdb6"
> 2020-11-25 22:50:45 sed "s:^:btrfs/:" //lkp/benchmarks/xfstests/tests/btrfs-group-03
> 2020-11-25 22:50:45 ./check btrfs/150 btrfs/151 btrfs/152 btrfs/153 btrfs/155 btrfs/156 btrfs/157 btrfs/158 btrfs/159 btrfs/160 btrfs/161 btrfs/162 btrfs/163 btrfs/164 btrfs/165 btrfs/166 btrfs/167 btrfs/168 btrfs/169 btrfs/170 btrfs/171 btrfs/172 btrfs/173 btrfs/174 btrfs/175 btrfs/176 btrfs/177 btrfs/178 btrfs/179 btrfs/180 btrfs/181 btrfs/182 btrfs/183 btrfs/184 btrfs/185 btrfs/186 btrfs/187 btrfs/188 btrfs/189 btrfs/190 btrfs/191 btrfs/192 btrfs/193 btrfs/194 btrfs/195 btrfs/196 btrfs/197 btrfs/198 btrfs/199
> FSTYP -- btrfs
> PLATFORM -- Linux/x86_64 lkp-hsw-d01 5.10.0-rc5-00155-gccb0edc68b69 #1 SMP Thu Nov 26 04:34:38 CST 2020
> MKFS_OPTIONS -- /dev/sdb2
> MOUNT_OPTIONS -- /dev/sdb2 /fs/scratch
>
> btrfs/150 1s
> btrfs/151 2s
> btrfs/152 6s
> btrfs/153 3s
> btrfs/155 1s
> btrfs/156 [not run] FITRIM not supported on /fs/scratch
> btrfs/157 2s
> btrfs/158 2s
> btrfs/159 11s
> btrfs/160 2s
> btrfs/161 1s
> btrfs/162 3s
> btrfs/163 - output mismatch (see /lkp/benchmarks/xfstests/results//btrfs/163.out.bad)
> --- tests/btrfs/163.out 2020-11-16 06:09:57.000000000 +0000
> +++ /lkp/benchmarks/xfstests/results//btrfs/163.out.bad 2020-11-25 22:51:22.553853766 +0000
> @@ -1,8 +1,10 @@
> QA output created by 163
> +./common/btrfs: line 405: _require_loadable_fs_module: command not found
> -- golden --
> 0000000 abab abab abab abab abab abab abab abab
> *
> 20000000
> +./common/btrfs: line 412: _reload_fs_module: command not found
> ...
> (Run 'diff -u /lkp/benchmarks/xfstests/tests/btrfs/163.out /lkp/benchmarks/xfstests/results//btrfs/163.out.bad' to see the entire diff)
> btrfs/164 [not run] Require module btrfs to be unloadable
> btrfs/165 1s
> btrfs/166 1s
> btrfs/167 2s
> btrfs/168 1s
> btrfs/169 2s
> btrfs/170 0s
> btrfs/171 1s
> btrfs/172 [not run] This test requires a valid $LOGWRITES_DEV
> btrfs/173 1s
> btrfs/174 1s
> btrfs/175 15s
> btrfs/176 6s
> btrfs/177 8s
> btrfs/178 1s
> btrfs/179 _check_btrfs_filesystem: filesystem on /dev/sdb2 is inconsistent
> (see /lkp/benchmarks/xfstests/results//btrfs/179.full for details)
This is known false alert.
When we have half dropped snapshots/subvolumes, btrfs check will report
false qgroup mismatch.
But if the kernel has fully dropped the subvolume/snapshot, the
btrfs-progs will report the same accounting as kernel.
I can workaround it by adding a "btrfs subv sync" to solve it for now.
The root fix is to make btrfs-check to do the same qgroup accounting for
half dropped subvolumes.
Thanks,
Qu
>
> btrfs/180 4s
> btrfs/181 3s
> btrfs/182 3s
> btrfs/183 1s
> btrfs/184 2s
> btrfs/185 1s
> btrfs/186 1s
> btrfs/187 192s
> btrfs/188 1s
> btrfs/189 2s
> btrfs/190 [not run] This test requires a valid $LOGWRITES_DEV
> btrfs/191 2s
> btrfs/192 [not run] This test requires a valid $LOGWRITES_DEV
> btrfs/193 2s
> btrfs/194 181s
> btrfs/195 489s
> btrfs/196 [not run] This test requires a valid $LOGWRITES_DEV
> btrfs/197 7s
> btrfs/198 3s
> btrfs/199 10s
> Ran: btrfs/150 btrfs/151 btrfs/152 btrfs/153 btrfs/155 btrfs/156 btrfs/157 btrfs/158 btrfs/159 btrfs/160 btrfs/161 btrfs/162 btrfs/163 btrfs/164 btrfs/165 btrfs/166 btrfs/167 btrfs/168 btrfs/169 btrfs/170 btrfs/171 btrfs/172 btrfs/173 btrfs/174 btrfs/175 btrfs/176 btrfs/177 btrfs/178 btrfs/179 btrfs/180 btrfs/181 btrfs/182 btrfs/183 btrfs/184 btrfs/185 btrfs/186 btrfs/187 btrfs/188 btrfs/189 btrfs/190 btrfs/191 btrfs/192 btrfs/193 btrfs/194 btrfs/195 btrfs/196 btrfs/197 btrfs/198 btrfs/199
> Not run: btrfs/156 btrfs/164 btrfs/172 btrfs/190 btrfs/192 btrfs/196
> Failures: btrfs/163 btrfs/179
> Failed 2 of 49 tests
>
>
>
>
> To reproduce:
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> bin/lkp install job.yaml # job file is attached in this email
> bin/lkp run job.yaml
>
>
>
> Thanks,
> Oliver Sang
>
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