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From: Lars Marowsky-Bree <lmb@suse.de>
To: Nerijus Baliunas <nerijus@users.sourceforge.net>,
	linux-raid@vger.kernel.org
Subject: Re: mounting /dev/hdax and xfs problems
Date: Tue, 7 Oct 2003 13:26:22 +0200	[thread overview]
Message-ID: <20031007112622.GI28158@marowsky-bree.de> (raw)
In-Reply-To: <S262703AbTJDX0w/20031004232652Z+8001@vger.kernel.org>

On 2003-10-05T02:26:02,
   Nerijus Baliunas <nerijus@users.sourceforge.net> said:

> When mounting /dev/hda2 it succeeds. The question is -
> does mounting part of raid1 mirror when raid is still running
> do anything bad for a raid? How raid works in this situation -
> is it still mirroring info from /dev/hda2 to /dev/hdb2?
> If I raidstop and raidstart, can it damage filesystem?

Yes. Your data is toast.

You need to trigger a full resync from hda2 to hdb2 manually.

I think
	mdadm /dev/md0 -f /dev/hdb2 -r /dev/hdb2 -a /dev/hdb2

should do it.

You must NEVER modify an underlaying device of a raid set. This will
cause problems.


Sincerely,
    Lars Marowsky-Brée <lmb@suse.de>

-- 
High Availability & Clustering		ever tried. ever failed. no matter.
SuSE Labs				try again. fail again. fail better.
Research & Development, SUSE LINUX AG		-- Samuel Beckett

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      parent reply	other threads:[~2003-10-07 11:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-04 23:26 mounting /dev/hdax and xfs problems Nerijus Baliunas
2003-10-07 11:04 ` Nerijus Baliunas
2003-10-07 11:26 ` Lars Marowsky-Bree [this message]

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