linux-ext4 - [PATCH] mke2fs: Add support for lazy journal initialization

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Message-Id: <DFB0F581-2306-41A9-AD21-F6019C3AC3C5@dilger.ca>
Date:	Thu, 3 Feb 2011 13:36:45 -0700
From:	Andreas Dilger <adilger.kernel@...ger.ca>
To:	Ted Ts'o <tytso@....EDU>
Cc:	Lukas Czerner <lczerner@...hat.com>,
	ext4 List <linux-ext4@...r.kernel.org>
Subject: [PATCH] mke2fs: Add support for lazy journal initialization

This patch adds the ability to skip zeroing the journal on disk.  This can
significantly speed up mke2fs with large journals.  At worst the uninitialized
journal is only a very short-term risk (if at all), because the journal will
be overwritten on any new filesystem as soon as any significant amount of data
is written to disk, unlike lazy_itable_init which can leave uninitialized
itable blocks indefinitely (in the absence of the kernel init thread).

Cheers, Andreas

Download attachment "0001-mke2fs-Add-lazy-journal-initialization-option.patch" of type "application/octet-stream" (7676 bytes)