From: Kent Overstreet <kent.overstreet@gmail.com>
To: "Marcin Mirosław" <marcin@mejor.pl>
Cc: linux-bcache@vger.kernel.org
Subject: Re: [bcachefs] bcache (dm-10): IO error on dm-10 for checksum error (due to change of str_hash?)
Date: Thu, 15 Sep 2016 18:12:39 -0800 [thread overview]
Message-ID: <20160916021239.q7bkpz6fgfwmznz7@kmo-pixel> (raw)
In-Reply-To: <0d572bc6-179d-f779-5d40-6fba6c66a3e6@mejor.pl>
On Thu, Sep 15, 2016 at 11:36:14AM +0200, Marcin Mirosław wrote:
> Hi!
> I was playing with fs without tiering. I was using it for tmp dir for
> compilation. Next I changed in sys:
> echo crc64 > options/data_checksum
> echo crc64 > options/metadata_checksum
> echo crc64 > options/str_hash
>
> After a couple of minutes I got:
> [ 8372.574346] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8372.680196] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8464.361860] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8466.146966] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8466.995095] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8469.199749] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8469.441408] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8469.722676] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8469.827055] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8470.038869] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8470.236663] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8470.427094] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8472.030519] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8473.098820] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8916.491297] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8916.715057] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8916.715111] bcache (dm-10): too many IO errors on dm-10, setting
> filesystem RO
> [ 8916.733056] bcache (dm-10): IO error on dm-10 for checksum error
> [ 8916.733125] bcache (dm-10): dm-10 read only
> [ 8916.733161] bcache (dm-10): too many IO errors on dm-10, setting
> device RO
> [ 8916.988286] bcache (dm-10): IO error: read only
> [ 8916.988545] bcache (dm-10): IO error: read only
>
>
> Is this due to changing str_hash?
Damn, you're finding all the bugs :)
I'm trying to reproduce it. It's probably due to changing data_checksum though,
not str_hash (and changing all of those at runtime should definitely work! just
neglected to test that, it seems...)
next prev parent reply other threads:[~2016-09-16 2:12 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 9:36 [bcachefs] bcache (dm-10): IO error on dm-10 for checksum error (due to change of str_hash?) Marcin Mirosław
2016-09-15 9:39 ` Marcin Mirosław
2016-09-16 2:12 ` Kent Overstreet [this message]
2016-09-16 3:33 ` Kent Overstreet
2016-09-16 8:07 ` Marcin Mirosław
2016-09-16 8:38 ` Kent Overstreet
2016-09-16 9:02 ` Marcin Mirosław
2016-09-16 9:16 ` Kent Overstreet
2016-09-16 11:17 ` Marcin Mirosław
2016-09-16 11:24 ` Kent Overstreet
2016-09-16 12:27 ` Marcin Mirosław
2016-09-16 12:36 ` Kent Overstreet
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