linux-kernel - Fwd: Btrfs scrub on single ssd reports non existing errors on Linux 6.4

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Message-ID: <36f891d3-0236-d3c7-55c8-0d8a73d4e30d@gmail.com>
Date:   Thu, 3 Aug 2023 21:20:54 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Olivier Wuillemin <olivier@...llemin.fr>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux btrfs <linux-btrfs@...r.kernel.org>
Subject: Fwd: Btrfs scrub on single ssd reports non existing errors on Linux
 6.4

Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> My distribution is a Manjaro 23.0.0, CPU is AMD A10.
> System disk is an SSD PNY_CS900 120Gb
> 
> With Linux 6.4.6.1-MANJARO, a scrub on then system disk root reports errors  and some times freeze the linux :
> 
> sudo btrfs scrub status /
> UUID:             53e62983-fed7-46ed-b97c-23d19af4f26f
> Scrub started:    Tue Aug  1 13:26:14 2023
> Status:           running
> Duration:         0:03:21
> Time left:        1:12:50
> ETA:              Tue Aug  1 14:42:25 2023
> Total to scrub:   85.39GiB
> Bytes scrubbed:   3.75GiB  (4.40%)
> Rate:             19.13MiB/s
> Error summary:    read=80
>   Corrected:      34
>   Uncorrectable:  46
>   Unverified:     0
> 
> In this case, this report is the last one before the Linux freeze.
> Scrub not always freese, but when it freeze only low level functionnalities as ping or ps are working.
> 
> If Y downgrade the linux kernel to 6.1.41-1-MANJARO there is no errors :
> 
> sudo btrfs scrub status /
> UUID:             53e62983-fed7-46ed-b97c-23d19af4f26f
> Scrub started:    Thu Aug  3 14:17:11 2023
> Status:           finished
> Duration:         0:04:41
> Total to scrub:   66.72GiB
> Rate:             225.62MiB/s
> Error summary:    no errors found
> 
> Ask me if you want more details.

See Bugzilla for the full thread.

Anyway, I'm adding this regression to be tracked by regzbot:

#regzbot introduced: v6.1.41..v6.4.6 https://bugzilla.kernel.org/show_bug.cgi?id=217758

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217758

-- 
An old man doll... just what I always wanted! - Clara