From: Stan Hoeppner <stan@hardwarefreak.com>
To: linux-raid@vger.kernel.org
Subject: Re: 5 drives lost in an inactive 15 drive raid 6 system due to cable problem - how to recover?
Date: Wed, 08 Sep 2010 13:47:19 -0500 [thread overview]
Message-ID: <4C87DA37.5000608@hardwarefreak.com> (raw)
In-Reply-To: <4C87C656.2030405@stern.nyu.edu>
Norman White put forth on 9/8/2010 12:22 PM:
> We have a 15 drive addonics array with 3 5 port sata multiplexors, one
> of the sas cables was knocked out to one of the port multiplexors...
Exactly how/why was the SAS cable "knocked out". Is this racked gear?
Fix that problem before worrying about the array state, as you may find
yourself here again in the future.
Bringing the array back up with guess work vs starting a restore now, if
you blow the array trying to fix it with mdadm hacks, you can always
still run the restore later. Just make sure you do a lot of
verification after you bring the arrays back up and they _seem_ fine.
Don't trust surface appearances, esp when talking about 30TB of data.
Just my $0.02.
--
Stan
next prev parent reply other threads:[~2010-09-08 18:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-08 17:22 5 drives lost in an inactive 15 drive raid 6 system due to cable problem - how to recover? Norman White
2010-09-08 18:47 ` Stan Hoeppner [this message]
2010-09-08 20:22 ` Mikael Abrahamsson
2010-09-08 21:35 ` Neil Brown
2010-09-10 15:18 ` Norman White
2010-09-10 17:47 ` Mr. James W. Laferriere
2010-09-10 18:51 ` Norman White
2010-09-10 19:39 ` CoolCold
2010-09-10 21:24 ` Neil Brown
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=4C87DA37.5000608@hardwarefreak.com \
--to=stan@hardwarefreak.com \
--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 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).