patch draft for extended attributes on linux

[jw schultz]

On Wed, Jun 25, 2003 at 01:50:59PM +1000, Martin Pool wrote:
> On 24 Jun 2003, jw schultz <jw at pegasys.ws> wrote:
> > I don't much care for sending the xattrs as part of the file list.
> > Even the 4KB ext[23] _currently_ limit it to is huge.
> 
> I'm not sure what is typical here.  The situation I'm working on is
> replicating a Samba share which is storing ACLs and EAs in XFS EAs.
> Most of them will be pretty small, and most files won't have them.  
> 
> For a small tree with a short XA on each file and no other changes,
> it's like this:
> 
>     [data]$ ~/work/rsync/xa/rsync -aPzv distcc-2.7.1/ dest --xattr
>     building file list ...
>     161 files to consider
>     wrote 12365 bytes  read 20 bytes  24770.00 bytes/sec
>     total size is 1115540  speedup is 90.07
>     [data]$ ~/work/rsync/xa/rsync -aPzv distcc-2.7.1/ dest
>     building file list ...
>     161 files to consider
>     wrote 3027 bytes  read 20 bytes  6094.00 bytes/sec
>     total size is 1115540  speedup is 366.11
> 
> I think it's tolerable.

9K for 161 files (58bytes/file) is OK as long as the user
expects it.  For the specific problem space you describe i
have no objection.

It is the long term trends and unmanaged use that concern
me.  But that is covered in previously posted analysis.



-- 
________________________________________________________________
	J.W. Schultz            Pegasystems Technologies
	email address:		jw at pegasys.ws

		Remember Cernan and Schmitt