From: Dave Chinner <david@fromorbit.com>
To: GuangYang <yguang11@outlook.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: EIO and data corruption on XFS file system
Date: Fri, 7 Nov 2014 08:54:01 +1100 [thread overview]
Message-ID: <20141106215400.GG23575@dastard> (raw)
In-Reply-To: <BLU175-W376F83659C1C70DE51C3D9DF840@phx.gbl>
On Thu, Nov 06, 2014 at 01:03:45PM +0000, GuangYang wrote:
> Hello,While working on the storage system, I got one question in
> terms of the XFS utilities to fix file system corruption.
> Basically, our storage system put 3 copies of data and the system
> would detect data inconsistency on regular basis, there are two
> patterns we observed so far:
>
> 1) the data is corrupted which result in an EIO,
Data corruption doesn't trigger EIO errors. EIO errors from the
underlying storage might cause data corruption, but the only thing
that can detect bad data is the application itself, not the kernel.
> 2) data is still accessible but the content is changed.
Again, data being incorrect is generally not a filesystem issue
unless there's a bug somewhere in the filesystem IO path. You'll
need to give us a *lot* more information about your storage and
application workload if you think XFS is corrupting data. Start
with:
http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2014-11-06 21:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-06 13:03 EIO and data corruption on XFS file system GuangYang
2014-11-06 14:27 ` Emmanuel Florac
2014-11-10 2:54 ` GuangYang
2014-11-06 17:55 ` Stan Hoeppner
2014-11-10 2:57 ` GuangYang
2014-11-10 14:54 ` Emmanuel Florac
2014-11-06 21:54 ` Dave Chinner [this message]
2014-11-10 2:59 ` GuangYang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141106215400.GG23575@dastard \
--to=david@fromorbit.com \
--cc=xfs@oss.sgi.com \
--cc=yguang11@outlook.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox