From: Ted Ts'o <tytso@mit.edu>
To: Andreas Dilger <aedilger@gmail.com>
Cc: "hao.bigrat@gmail.com" <hao.bigrat@gmail.com>,
"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>,
Robin Dong <sanbai@taobao.com>
Subject: Re: [PATCH bigalloc] e2fsprogs: change root-inode to extent-mapped
Date: Wed, 20 Jul 2011 13:49:37 -0400 [thread overview]
Message-ID: <20110720174937.GA17971@thunk.org> (raw)
In-Reply-To: <B27D0C6A-E0F5-4196-872B-392AA72FB348@gmail.com>
On Wed, Jul 20, 2011 at 09:52:49AM -0600, Andreas Dilger wrote:
>
> That reminds me of a question I had with bigalloc - are htree
> directories supported with bigalloc? For a 1MB bigalloc chunksize
> it would mean a fanout of 256k, or a maximum directory size of 256GB
> with only a single level.
Yes, htree directories are supported with bigalloc; but it still works
on *blocks*, whereas *clusters* are just used for allocation purposes.
>
> Any thoughts about increasing the directory size beyond 2GB?
>
I think the best way to do that is to support more than two levels of
directories. I seem to recall your telling me that one of your team
had prototyped something like this a while back? Or is my memory
playing tricks on me?
- Ted
prev parent reply other threads:[~2011-07-20 17:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-20 5:38 [PATCH bigalloc] e2fsprogs: change root-inode to extent-mapped hao.bigrat
2011-07-20 14:28 ` Theodore Tso
2011-07-20 15:52 ` Andreas Dilger
2011-07-20 17:49 ` Ted Ts'o [this message]
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