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From: Duncan <1i5t5.duncan@cox.net>
To: linux-btrfs@vger.kernel.org
Subject: Re: mount hangs after disk crash (RAID-1)
Date: Thu, 22 May 2014 21:06:26 +0000 (UTC)	[thread overview]
Message-ID: <pan$9e1ee$dd62e9f3$9263e2c8$c034feaf@cox.net> (raw)
In-Reply-To: 20140522185025.4c72aab9@s9

Tomasz Chmielewski posted on Thu, 22 May 2014 18:50:25 +0100 as excerpted:

> It *does* mount as ro,degraded, but then, it's not possible to add a
> disk and recover to a functioning RAID-1.
> Also, when I try to remount rw, the mount command hangs as well.
> 
> Is there anything else I can try?

It's a long shot, but in addition to Chris's excellent suggestions, try 
the skip_balance mount option.  In the outside case that it's just a 
resumed balance that's triggering the hang, that should allow the rw 
mount to succeed as it kills the balance that would otherwise be 
immediately resumed as soon as the filesystem goes writable, possibly 
before the mount returns.

Otherwise, I'd go with Chris's suggestion, mount read-only and ensure 
your backups are current, then go experimental on it, since there's 
nothing further to lose at that point anyway.

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman


  parent reply	other threads:[~2014-05-22 21:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-22  2:22 mount hangs after disk crash (RAID-1) Tomasz Chmielewski
2014-05-22  8:51 ` Tomasz Chmielewski
2014-05-22 15:16   ` Tomasz Chmielewski
2014-05-22 17:50     ` Tomasz Chmielewski
2014-05-22 18:20       ` Chris Murphy
2014-05-22 21:06       ` Duncan [this message]
2014-05-22 22:07       ` Chris Murphy
2014-05-22  9:43 ` Duncan
2014-05-22 16:27   ` Chris Murphy

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