[Samba] acl_xattr vs acl_tdb

simo idra at samba.org
Fri Mar 26 10:28:25 MDT 2010

On Fri, 2010-03-26 at 10:53 -0400, simo wrote:
> On Fri, 2010-03-26 at 13:06 +0000, Miguel Medalha wrote:
> > > If I remember correctly XFS used to have a size limit of 64KiB per
> > > xattr.
> > >    
> > 
> > What about ext3 & ext4?
> Always IIRC, they should be limited by the inode size, which is 4KiB,
> but this information is old, and should be verified for ext4.

Ok I just checked.
On ext4 the total size of *all* xattrs can't be larger than 4k and some.

There is only 1 block you can allocate beyond the file inode.

So careful on the amount of data you store in ext4 attrs. If you think
you'll have fatty Windows ACLs to store I guess XFS is a better choice
right now.


Simo Sorce
Samba Team GPL Compliance Officer <simo at samba.org>
Principal Software Engineer at Red Hat, Inc. <simo at redhat.com>

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