linux-ext4 - Re: [PATCH 3/4] ext2fs: add multi-mount protection (INCOMPAT

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Date:	Sat, 24 Sep 2011 14:49:54 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Andreas Dilger <adilger@...mcloud.com>
Cc:	linux-ext4@...r.kernel.org, Johann Lombardi <johann@...mcloud.com>
Subject: Re: [PATCH 3/4] ext2fs: add multi-mount protection (INCOMPAT_MMP)

On Fri, Sep 23, 2011 at 05:38:43PM -0600, Andreas Dilger wrote:
> Multi-mount protection is feature that allows mke2fs, e2fsck, and
> others to detect if the filesystem is mounted on a remote node (on
> SAN disks) and avoid corrupting the filesystem.  For e2fsprogs this
> means that it checks the MMP block to see if the filesystem is in use,
> and marks the filesystem busy while e2fsck is running on the system.

Applied, thanks.

						- Ted
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