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Re: Number of ACLs

To: Laurent CARON <lcaron@xxxxxxxxx>
Subject: Re: Number of ACLs
From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Date: Thu, 7 Jul 2011 15:26:16 +0200
Cc: xfs@xxxxxxxxxxx
In-reply-to: <4E15AA1A.3090802@xxxxxxxxx>
Organization: Intellique
References: <4E15AA1A.3090802@xxxxxxxxx>
Le Thu, 07 Jul 2011 14:44:10 +0200
Laurent CARON <lcaron@xxxxxxxxx> écrivait:

> I'd like to know if it is possible in a simple & safe way to increase 
> the number of supported ACLs on an already existing FS.

I just realised I missed that part : there is absolutely no way to
change an existing filesystem after the fact. 

My previous answer was about the fact that by installing a modified
kernel module, there is a slight possibility that you can create a
NEW filesystem with more ACLs (and beware, this is untested,
unsupported, uncharted territory, "there be dragons" and al). Given that
the modified xfs module actually works, given that the mkfs.xfs and
other tools behave as expected (unlikely), and that the whole setup
won't fall down in flames the first time you actually create 26 ACLs on
a file, etc.

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