Linux Btrfs filesystem development
 help / color / mirror / Atom feed
From: Martin Steigerwald <Martin@lichtvoll.de>
To: linux-btrfs@vger.kernel.org
Subject: Re: kernel got struck while scrubbing BTRFS with node- and leafsize 32768
Date: Sat, 16 Jun 2012 22:38:23 +0200	[thread overview]
Message-ID: <201206162238.23317.Martin@lichtvoll.de> (raw)
In-Reply-To: <201206162223.20392.Martin@lichtvoll.de>

Am Samstag, 16. Juni 2012 schrieb Martin Steigerwald:
> merkaba:~> date ; btrfs scrub status /mnt/amazon-daten
> Sa 16. Jun 22:06:33 CEST 2012
> scrub status for bd94ea73-6e77-4c81-b053-2401b4f52b3e
>         scrub started at Sat Jun 16 21:44:09 2012, running for 1341
> seconds total bytes scrubbed: 90.30GB with 0 errors
> merkaba:~> date ; btrfs scrub cancel /mnt/amazon-daten
> Sa 16. Jun 22:06:47 CEST 2012
> [… hangs here …]

btrfs-readahead is stuck:

merkaba:~> ps aux | egrep "(USER| D)" 
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root     11920  0.0  0.0      0     0 ?        D    21:46   0:00 [btrfs-readahead]
root     13649  0.0  0.0  10544   396 pts/0    D+   22:06   0:00 btrfs scrub cancel /mnt/amazon-daten
root     16309  0.0  0.0   9816   948 pts/1    S+   22:24   0:00 egrep (USER| D)

I created a bug report with a

kern.log including echo t > /proc/sysrq-trigger with stuck readahead

I will no be redoing the backup drive as 4K node and leaf size.

The production one I will leave at 32K for now, so I might be able to
reproduce this hang.

But first checksum error free redundancy minus the few affected files
that are not that important to me.

Thanks,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7

  reply	other threads:[~2012-06-16 20:38 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-16 20:23 kernel got struck while scrubbing BTRFS with node- and leafsize 32768 Martin Steigerwald
2012-06-16 20:38 ` Martin Steigerwald [this message]
2012-06-16 20:39   ` Martin Steigerwald
2012-06-24 15:02     ` Martin Steigerwald
2012-06-17  8:52 ` Martin Steigerwald
2012-06-25  3:27 ` Chester
2012-06-25  7:14   ` Martin Steigerwald

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=201206162238.23317.Martin@lichtvoll.de \
    --to=martin@lichtvoll.de \
    --cc=linux-btrfs@vger.kernel.org \
    /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