linux-ext4 - Re: [PATCH 3/4] e2fsprogs: Make mke2fs use undo I/O manager.

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Message-ID: <20070801060439.GP5469@schatzie.adilger.int>
Date:	Wed, 1 Aug 2007 01:04:39 -0500
From:	Andreas Dilger <adilger@...sterfs.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	tytso@....edu, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 3/4] e2fsprogs: Make mke2fs use undo I/O manager.

On Aug 01, 2007  07:34 +0530, Aneesh Kumar K.V wrote:
> When running mke2fs, if a file system is detected
> on the device, we use Undo I/O manager as the io manager.
> This helps in reverting the changes made to the filesystem
> in case we wrongly selected the device.
> 
> The environment variable MKE2FS_SCRATCH_DIR
> is used to indicate the  directory within which the tdb
> file need to be created. The file will be named mke2fs-XXXXXX

It might be more useful to have "mke2fs-{dev}-{timestamp}" as
the filename, so that it is clear where the image came from.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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