From: berk walker <berk@panix.com>
To: Matthias Urlichs <matthias@urlichs.de>
Cc: linux-raid@vger.kernel.org
Subject: Re: Re-map disk sectors in userspace when rewriting after read errors
Date: Tue, 15 Sep 2009 02:45:29 -0400 [thread overview]
Message-ID: <4AAF3809.7080802@panix.com> (raw)
In-Reply-To: <h8nbt5$n8p$1@ger.gmane.org>
Matthias Urlichs wrote:
> Hi,
>
> my problem is that I have a bunch of crappy disks which seem unable to
> reliably remap bad areas after a read error.
>
> This obviously makes the read error rewrite feature of our beloved
> RAID5/6 code somewhat less than useful.
>
> What I would like to do is to re-map these sectors in userspace -- either
> by browbeating the disk into it, or by using the Device Mapper. So I'd
> need a way to tell a userspace daemon "this device+block is unreadable",
> and wait until said daemon tells the RAID core to go ahead.
>
> I can do the userspace side easily, but my time to dig through the RAID
> code and implement that sort of channel in a maintainable way is somewhat
> limited. (Plus, I need that code sooner rather than later.)
>
> Would somebody be able to help out? There may be some money in it ...
>
>
I can not believe the question. What file system might this be?
next prev parent reply other threads:[~2009-09-15 6:45 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-15 6:23 Re-map disk sectors in userspace when rewriting after read errors Matthias Urlichs
2009-09-15 6:45 ` berk walker [this message]
2009-09-15 7:23 ` Matthias Urlichs
2009-09-15 7:13 ` Alex Butcher
2009-09-15 7:29 ` Matthias Urlichs
2009-09-15 7:37 ` Alex Butcher
2009-09-15 10:48 ` Matthias Urlichs
2009-09-16 9:41 ` Goswin von Brederlow
2009-09-16 13:13 ` Matthias Urlichs
2009-09-18 8:17 ` Majed B.
2009-09-18 8:28 ` Robin Hill
2009-09-18 9:57 ` Majed B.
2009-09-18 10:22 ` Robin Hill
2009-09-18 10:52 ` Majed B.
2009-09-18 11:15 ` Robin Hill
2009-09-18 11:35 ` Matthias Urlichs
2009-09-18 17:44 ` John Robinson
2009-09-18 18:02 ` Greg Freemyer
2009-09-18 20:13 ` Majed B.
2009-10-02 13:55 ` Bill Davidsen
2009-09-15 10:40 ` Majed B.
2009-09-15 10:52 ` Matthias Urlichs
2009-09-15 11:03 ` Majed B.
2009-09-15 17:02 ` Majed B.
2009-09-15 18:05 ` Matthias Urlichs
2009-09-15 18:14 ` Majed B.
2009-09-15 18:44 ` Matthias Urlichs
2009-09-16 9:31 ` Majed B.
2009-09-16 9:44 ` Matthias Urlichs
2009-09-16 9:52 ` Majed B.
2009-09-16 13:05 ` Alex Butcher
2009-09-16 10:00 ` Robin Hill
2009-09-16 10:07 ` Majed B.
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=4AAF3809.7080802@panix.com \
--to=berk@panix.com \
--cc=linux-raid@vger.kernel.org \
--cc=matthias@urlichs.de \
/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.