linux-ext4 - Re: ceph and ext4

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Message-ID: <CAC-hyiH9pUOhyxJXa0Nmig=hT5v3O04gZvoeWv0xOhDTzzSdyQ@mail.gmail.com>
Date:	Tue, 15 Nov 2011 10:43:58 -0800
From:	Yehuda Sadeh Weinraub <yehudasa@...il.com>
To:	"Ted Ts'o" <tytso@....edu>
Cc:	Andreas Dilger <adilger@...mcloud.com>,
	Christian Brunner <chb@....de>,
	Martin Mailand <martin@...adero.com>,
	"ceph-devel@...r.kernel.org" <ceph-devel@...r.kernel.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Jian Yu <yujian@...mcloud.com>
Subject: Re: ceph and ext4

On Tue, Nov 15, 2011 at 8:43 AM, Andreas Dilger <adilger@...mcloud.com> wrote:
> Coincidentally, we have someone working in those patches again. The main obstacle for accepting the previous patch as-is was that Ted wanted to add support for "medium-sized" xattrs that are addressed as a string of blocks, instead of via an inode.
>
> This will allow xattrs up to 64kB in size (in total) to be stored as efficiently as an external xattr block.
>

Ted, is having that is a hard requirement? Can this
functionality/optimization be added later so that we can leverage ext4
in the mean time, even if not in the most optimal way?

Thanks,
Yehuda
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