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Re: raid1 (u)mount error

To: Chris Wedgwood <cw@xxxxxxxx>
Subject: Re: raid1 (u)mount error
From: Steve Lord <lord@xxxxxxx>
Date: 10 Sep 2002 13:28:17 -0500
Cc: thomas <tom@xxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <20020910182241.GA5230@xxxxxxxxxxxxx>
References: <527280437.20020910155814@xxxxxxxx> <20020910182241.GA5230@xxxxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Tue, 2002-09-10 at 13:22, Chris Wedgwood wrote:
> On Tue, Sep 10, 2002 at 03:58:14PM +0200, thomas wrote:
> 
> >     i've got a RAID1 running that seems to not umount itself properly. so
> >     when i try to mount the system after a reboot i see:
> 
> >     now i don't have /dev/md0 in fstab just to be sure that it
> >     doesn't try to mount itself before the raid array is
> >     started. but it doesn't matter.  whatever i try the only thing
> >     that helps is xfs_repair -L /dev/md0, after that it mounts
> >     without any problems.
> 
> Is this / on raid1?
> 
> If so, I also see this...  I put some stack dump stuff in to verify
> that /dev/md0 get opened *twice* as / is mounted, once I assume for
> the auto-raid stuff (or something?) and then again to mount /
> 
> The raid1 code won't switch to RO in there is more than one reference
> and thus it's never able to be mounted cleanly.
> 
> Sorry this doesn't provide a solution, I was tracking this down under
> time pressure and had to fix the problem using another means.
> 

Are you doing this with current cvs code? The xfs log used to 
effectively open the device again. I think this has been reworked
in the current code to avoid the double open.

I have not checked into this, so I might be wrong.

Steve

-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@xxxxxxx


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