From: Theodore Tso <tytso@mit.edu>
To: Michael Rubin <mrubin@google.com>
Cc: Curt Wohlgemuth <curtw@google.com>, linux-ext4@vger.kernel.org
Subject: Re: Use of kmalloc vs vmalloc in ext4?
Date: Fri, 24 Apr 2009 23:39:55 -0400 [thread overview]
Message-ID: <20090425033955.GF13608@mit.edu> (raw)
In-Reply-To: <20090425030703.GD13608@mit.edu>
P.S. What sort of flex_bg size are you using?
EXT4-fs: not enough memory for 8198 flex groups
EXT4-fs: unable to initialize flex_bg meta info!
Modern e2fsprogs default to using 16 block groups per flex_bg, which
means 8198 flex groups is a little over 16 TB --- which the mainline
e2fsprogs doesn't support yet. You wouldn't be using a smaller
flex_bg size for some reason, are you?
If so, can you say something about why? I've been actually thinking
that we might want to bump up the flex_bg size slight more, but it
appears you're using something smaller; was this deliberate.
- Ted
next prev parent reply other threads:[~2009-04-25 3:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-11 14:32 Use of kmalloc vs vmalloc in ext4? Curt Wohlgemuth
2009-04-06 6:45 ` Michael Rubin
2009-04-06 9:33 ` Andreas Dilger
2009-04-25 3:00 ` [PATCH] ext4: Fallback to vmalloc if kmalloc can't allocate s_flex_groups array Theodore Ts'o
2009-04-25 3:28 ` Eric Sandeen
2009-04-25 3:57 ` Theodore Tso
2009-04-25 3:07 ` Use of kmalloc vs vmalloc in ext4? Theodore Tso
2009-04-25 3:39 ` Theodore Tso [this message]
2009-04-26 2:12 ` Theodore Tso
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