From: Neil Brown <neilb@suse.de>
To: Randall Smith <randall@tnr.cc>
Cc: linux-raid@vger.kernel.org
Subject: Re: resync hangs
Date: Fri, 26 Jun 2009 12:15:04 +1000 [thread overview]
Message-ID: <19012.12072.384955.746414@notabene.brown> (raw)
In-Reply-To: message from Randall Smith on Monday June 22
On Monday June 22, randall@tnr.cc wrote:
> NeilBrown wrote:
> >>
> >> ~$ grep . /sys/block/md2/md/*
> > ...
> >> /sys/block/md2/md/sync_speed:0
> >> /sys/block/md2/md/sync_speed_max:0 (system)
> >> /sys/block/md2/md/sync_speed_min:0 (system)
> >
> > This looks like the culprit. The sync_speed has been limited to
> > 0. The "(system)" means that it is using the value from
> > /proc/sys/dev/raid/speed_limit_max
> >
> > It seem that that value has been set to 0 somehow.
> > The default value is 200000.
> >
> > Could something be setting that? Can you set it back?
> > .../speed_limit_min should be 1000 by default.
> >
> > NeilBrown
>
> I'll set it back next time it happens. Any guess what might set that
> value to 0 and why? mdadm is the only thing I know of that knows about
> raid. It starts up late in the init process with this command:
No, I don't know of anything that would changed these values. mdadm
certainly does not. My guess would be some errant script, maybe part
of a cron job.
NeilBrown
prev parent reply other threads:[~2009-06-26 2:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-06 17:42 resync hangs Randall Smith
2009-06-09 21:20 ` Randall Smith
2009-06-09 21:55 ` NeilBrown
2009-06-10 4:07 ` Randall Smith
2009-06-22 3:18 ` Randall Smith
2009-06-22 3:46 ` NeilBrown
2009-06-22 16:53 ` Randall Smith
2009-06-26 2:15 ` Neil Brown [this message]
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=19012.12072.384955.746414@notabene.brown \
--to=neilb@suse.de \
--cc=linux-raid@vger.kernel.org \
--cc=randall@tnr.cc \
/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;
as well as URLs for NNTP newsgroup(s).