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SubjectRe: [BUG] btrfs potential failure on 32 core LTP test (fallocate05)
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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,

Josef

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