From: Josef Bacik <josef@toxicpanda.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
Chris Mason <clm@fb.com>, David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"kernel-team@lists.ubuntu.com" <kernel-team@lists.ubuntu.com>,
"ltp@lists.linux.it" <ltp@lists.linux.it>,
Qu Wenruo <wqu@suse.com>, Filipe Manana <fdmanana@suse.com>
Subject: Re: [BUG] btrfs potential failure on 32 core LTP test (fallocate05)
Date: Tue, 29 Jun 2021 14:32:15 -0400 [thread overview]
Message-ID: <57cfa398-8a33-06e2-dfcd-fa959c27ac47@toxicpanda.com> (raw)
In-Reply-To: <9e2214b1-999d-90cf-a5c2-2dbb5a2eadd4@canonical.com>
On 6/29/21 2:28 PM, Krzysztof Kozlowski wrote:
> On 29/06/2021 20:06, Krzysztof Kozlowski wrote:
>> Minor update - it's not only Azure's. AWS m5.8xlarge and m5.16xlarge (32
>> and 64 cores) fail similarly. I'll try later also QEMU machines with
>> different amount of CPUs.
>>
>
> Test on QEMU machine with 31 CPUs passes. With 32 CPUs - failure as
> reported.
>
> dmesg is empty - no error around this.
>
> Maybe something with per-cpu variables?
Ah yeah, so since you are further into this than I am, want to give my recent
batch of fixes a try?
https://github.com/josefbacik/linux/tree/delalloc-shrink
This might actually resolve the problems. If not I'm getting one of our 64cpu
boxes setup to test this, I also couldn't reproduce it on my smaller local
machines. Thanks,
Josef
next prev parent reply other threads:[~2021-06-29 18:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-29 17:00 Krzysztof Kozlowski
2021-06-29 17:20 ` Josef Bacik
2021-06-29 17:25 ` Krzysztof Kozlowski
2021-06-30 11:21 ` [LTP] " Petr Vorel
2021-06-30 11:29 ` Petr Vorel
2021-06-29 17:24 ` Josef Bacik
2021-06-29 17:26 ` Krzysztof Kozlowski
2021-06-29 17:28 ` Josef Bacik
2021-06-29 18:06 ` Krzysztof Kozlowski
2021-06-29 18:28 ` Krzysztof Kozlowski
2021-06-29 18:32 ` Josef Bacik [this message]
2021-06-30 8:34 ` Krzysztof Kozlowski
2021-06-29 20:14 ` Josef Bacik
2021-06-30 6:52 ` Krzysztof Kozlowski
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