Amanda-Users

RE: AMANDA and gtar and Maildir and a couple of thousand mail users

2006-12-31 08:36:35
Subject: RE: AMANDA and gtar and Maildir and a couple of thousand mail users
From: "Mark Hennessy" <mhennessy AT cloud9 DOT net>
To: "Matt Hyclak" <hyclak AT math.ohiou DOT edu>, <amanda-users AT amanda DOT org>
Date: Sun, 31 Dec 2006 08:00:06 -0500
Thanks, I have gone and updated that.
I'm using the latest stable 2.51 on various FreeBSD machines.

--
 Mark Hennessy

> -----Original Message-----
> From: owner-amanda-users AT amanda DOT org 
> [mailto:owner-amanda-users AT amanda DOT org] On Behalf Of Matt Hyclak
> Sent: Friday, December 29, 2006 5:13 PM
> To: amanda-users AT amanda DOT org
> Subject: Re: AMANDA and gtar and Maildir and a couple of 
> thousand mail users
> 
> On Fri, Dec 29, 2006 at 04:41:31PM -0500, Mark Hennessy 
> enlightened us:
> > I'm seeing this problem where gtar seems to take about 18 
> hours in total to
> > back up.
> > 
> > It's pulling the data off of a NetApp filer connected to 
> the AMANDA server
> > using Gigabit Ethernet.  The total amount of data is like 
> 120GB and I'm using
> > a Quantum SDLT-220 drive.
> > 
> > I'm not sure what could be causing this slowness in the 
> backup.  It seems to
> > take like 6 hours to calculate the file list alone for this 
> partition and the
> > other drives/partitions that don't host Maildirs get have 
> L0s done fine in
> > like 2-3 hours at most so I would think it's because 
> Maildir simply has so
> > many files.
> > 
> > Any good alternatives to gtar?  Any commandline parameters 
> to try to make the
> > list creation be done more quickly or not done at all if possible?
> > 
> > Thanks for any advice!
> 
> You don't say what version of amanda you're using, but the estimate
> paramater of your dumptype should help considerably. I use 
> CALCSIZE because
> I don't really care exactly how accurate the estimates are. 
> There are a
> couple other options you should check out.
> 
> Matt
> 
> -- 
> Matt Hyclak
> Department of Mathematics 
> Department of Social Work
> Ohio University
> (740) 593-1263
> 
> 


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