From: John Robinson <john.robinson@anonymous.org.uk>
To: Linux RAID <linux-raid@vger.kernel.org>
Subject: Feature suggestion: immediate repair attempt on failed read?
Date: Fri, 14 Nov 2008 12:29:25 +0000 [thread overview]
Message-ID: <491D6F25.8030301@anonymous.org.uk> (raw)
On 13/11/2008 23:04, Mikael Abrahamsson wrote (in the "OT: Tips for good
hard drives for a home server" thread):
> Looking at the md code in linux, would it be possible to do some work
> around here in that if a drive read operationstalls, let's try to read
> from the other drives and then re-write the block on the drive that
> stalled?
I'd like to second this suggestion; my coding skills are WAY too rusty
to attempt it myself, but it sounds like an excellent idea.
We could also have a timeout setting so that if a read stalls, at least
the application can get its data (by reading the other discs) and the md
subsystem can carry on waiting for the read and/or just doing the
rewrite in the background.
What happens at the moment - could one slow read cause the array to be
switched into degraded mode immediately?
Cheers,
John.
reply other threads:[~2008-11-14 12:29 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=491D6F25.8030301@anonymous.org.uk \
--to=john.robinson@anonymous.org.uk \
--cc=linux-raid@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.