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From: Martin Papik <mp6058@gmail.com>
To: Dave Chinner <david@fromorbit.com>
Cc: Linux fs XFS <xfs@oss.sgi.com>
Subject: Re: XFS filesystem claims to be mounted after a disconnect
Date: Fri, 06 Jun 2014 03:47:58 +0300	[thread overview]
Message-ID: <53910FBE.6090109@gmail.com> (raw)
In-Reply-To: <20140605224140.GB4453@dastard>

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Thanks Dave

But wouldn't the same thing that prevents xfs_repair also prevent
dm-multipath from using the device? Or would you typically setup a
partitioning or volume scheme on top of dm-multipath?

Martin

> No. Use dm-multipath to make them appear as a single block device 
> made up as a pair of redundant paths in primary/secondary failover 
> or active/active load balancing configurations. dm-multipath
> handles failover between the two block devices on path failure 
> transparently.
> 
> XFS | dm-mp-0 /    \ sdc    sdd
> 
> The mounted filesystem doesn't even know there are multiple paths
> in this configuration, however the XFS UUID trapping behaviour
> avoids this problem by preventing you from doing XFS operations
> directly on /dev/sdc or /dev/sdd while the filesystem is mount on 
> /dev/dm-mp-0....
> 
> Cheers.
> 
> Dave.
> 

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  reply	other threads:[~2014-06-06  0:48 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-02 13:47 XFS filesystem claims to be mounted after a disconnect Martin Papik
2014-05-02 15:04 ` Eric Sandeen
2014-05-02 15:07 ` Eric Sandeen
2014-05-02 15:44   ` Mark Tinguely
2014-05-02 16:26     ` Martin Papik
2014-05-02 16:44   ` Martin Papik
2014-05-02 16:53     ` Eric Sandeen
2014-05-02 17:54       ` Martin Papik
2014-05-02 18:39         ` Eric Sandeen
2014-05-02 19:07           ` Martin Papik
2014-05-02 19:16             ` Eric Sandeen
2014-05-02 19:29               ` Martin Papik
2014-05-02 23:38                 ` Dave Chinner
2014-05-02 23:35             ` Dave Chinner
2014-05-03  0:04               ` Martin Papik
2014-05-03  3:02                 ` Dave Chinner
2014-06-02 11:22                   ` Martin Papik
2014-06-02 23:41                     ` Dave Chinner
2014-06-03  9:23                       ` Martin Papik
2014-06-03  9:55                         ` Stefan Ring
2014-06-03 10:48                           ` Martin Papik
2014-06-03 21:28                             ` Dave Chinner
2014-06-03 22:37                               ` Martin Papik
2014-06-05  0:55                                 ` Dave Chinner
2014-06-05  1:38                                   ` Martin Papik
2014-06-05 19:39                                   ` Martin Papik
2014-06-05 22:41                                     ` Dave Chinner
2014-06-06  0:47                                       ` Martin Papik [this message]
2014-06-03 22:58                               ` Martin Papik
2014-06-05  0:08                                 ` Dave Chinner
2014-06-05  1:07                                   ` Martin Papik

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