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Re: Extended Attributes

To: "Quang Nguyen (Ngo)" <quang.nguyen@xxxxxxxxxxxx>
Subject: Re: Extended Attributes
From: Steve Lord <lord@xxxxxxx>
Date: 05 Dec 2001 12:44:15 -0600
Cc: "'linux-xfs@xxxxxxxxxxx'" <linux-xfs@xxxxxxxxxxx>
In-reply-to: <ACD4093EB009D411BC8A009027D7699660A15D@xxxxxxxxxxxxxxxxx>
References: <ACD4093EB009D411BC8A009027D7699660A15D@xxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, 2001-12-05 at 12:39, Quang Nguyen (Ngo) wrote:
> What are the limitations on extended attributes when calling attr_set() and
> attr_setf()?  How much space can each node hold, and what are the
> side-effects?

Each one can hold 64K of data. No side effects really - except it will
take a little longer to remove the file.

> Does anyone know if other journaling file systems also support extended
> attributes besides XFS?

Given there is a patch for ext2, it is not inconceivble that ext3
will support them at some point. Reiserfs will probably end up with
them, or something like them, Hans liked multiple streams in a file.
Not sure about jfs - it may on os2, but probably does not on Linux.


> Thanks,
> Quang
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Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@xxxxxxx

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