From: David Chinner <dgc@sgi.com>
To: Jan Engelhardt <jengelh@computergmbh.de>
Cc: xfs@oss.sgi.com
Subject: Re: ACL limit
Date: Mon, 3 Dec 2007 09:31:05 +1100 [thread overview]
Message-ID: <20071202223105.GS119954183@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0711301902360.18767@fbirervta.pbzchgretzou.qr>
On Fri, Nov 30, 2007 at 07:07:26PM +0100, Jan Engelhardt wrote:
> Hi,
>
>
> is there any way to raise the number of ACLs that can be stored? The
> current limit of 25 is quite tight, where ext3 allows 124 and jfs 8192.
> Would increasing XFS_ACL_MAX_ENTRIES work (yes, using potentially more
> memory), i.e. not interfering with the on-disk format?
It would be an on disk format change - older kernels would error out
(-EINVAL) on > 25 ACLs and not check any of them. Hence we'd
probably need a superblock feature bit to indicate that >25 ACEs are
supported in a given ACL.
But we can work around that (superblock feature bit) and should
be able to extend this out to ~8190 entries. We're doing an ACL
rework ATM, so > 25 entry support should fall out of that....
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
next prev parent reply other threads:[~2007-12-02 22:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-30 18:07 ACL limit Jan Engelhardt
2007-12-02 22:31 ` David Chinner [this message]
2007-12-02 23:47 ` Timothy Shimmin
2007-12-03 0:12 ` Jan Engelhardt
2007-12-03 0:23 ` David Chinner
2007-12-03 0:34 ` Timothy Shimmin
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