Messages in this thread Patch in this message | | | Date | Wed, 30 Jun 2021 13:21:19 +0200 | From | Petr Vorel <> | Subject | Re: [LTP] [BUG] btrfs potential failure on 32 core LTP test (fallocate05) |
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> On 29/06/2021 19:20, Josef Bacik wrote: > > On 6/29/21 1:00 PM, Krzysztof Kozlowski wrote: > >> Dear BTRFS folks,
> >> I am hitting a potential regression of btrfs, visible only with > >> fallocate05 test from LTP (Linux Test Project) only on 32+ core Azure > >> instances (x86_64).
> >> Tested: > >> v5.8 (Ubuntu with our stable patches): PASS > >> v5.11 (Ubuntu with our stable patches): FAIL > >> v5.13 mainline: FAIL
> >> PASS means test passes on all instances > >> FAIL means test passes on other instance types (e.g. 4 or 16 core) but > >> fails on 32 and 64 core instances (did not test higher), > >> e.g.: Standard_F32s_v2, Standard_F64s_v2, Standard_D32s_v3, > >> Standard_E32s_v3
> >> Reproduction steps: > >> git clone https://github.com/linux-test-project/ltp.git > >> cd ltp > >> ./build.sh && make install -j8 > >> cd ../ltp-install > >> sudo ./runltp -f syscalls -s fallocate05
> > This thing keeps trying to test ext2, how do I make it only test btrfs? Thanks,
> It tests all available file systems, just wait till it gets to btrfs. I > don't know how to limit it only to one file system. In the future we can add environment variable to specify the only fs to be tested. There is LTP_DEV_FS_TYPE, but that does not work when .all_filesystems flag is enabled. Thus just patch the file:
Kind regards, Petr
diff --git testcases/kernel/syscalls/fallocate/fallocate05.c testcases/kernel/syscalls/fallocate/fallocate05.c index 55ec1aee4..7f5a3005a 100644 --- testcases/kernel/syscalls/fallocate/fallocate05.c +++ testcases/kernel/syscalls/fallocate/fallocate05.c @@ -149,7 +149,8 @@ static struct tst_test test = { .mount_device = 1, .dev_min_size = 512, .mntpoint = MNTPOINT, - .all_filesystems = 1, + .needs_device = 1, + .dev_fs_type = "btrfs", .setup = setup, .cleanup = cleanup, .test_all = run,
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