Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Michael Stowe
I've got a user running Win7-64 with 3 large drives: C (original boot), D (data), and G (Win7 boot). I've configured rsyncd on it to serve them as 3 modules named for the drive letters. A full backup to my CentOS 5 box takes about 40 hours, and an incremental takes about 8, so I've configured

Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Les Mikesell
On Sun, Jul 8, 2012 at 9:59 PM, Kenneth Porter sh...@sewingwitch.com wrote: I've got a user running Win7-64 with 3 large drives: C (original boot), D (data), and G (Win7 boot). I've configured rsyncd on it to serve them as 3 modules named for the drive letters. A full backup to my CentOS 5 box

Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Kenneth Porter
On Monday, July 09, 2012 9:24 AM -0500 Michael Stowe mst...@chicago.us.mensa.org wrote: You don't say how big the drives are, but 40 hours says terabytes to me. If that's not the case, I'd seriously consider [re]examining your rsync version on the client. (Or perhaps beefing up your

Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Les Mikesell
On Mon, Jul 9, 2012 at 12:56 PM, Kenneth Porter sh...@sewingwitch.com wrote: The total size is 0.5 TB according to the Host Summary page. The network is 100 Mbit. The server is a Dell PE2900 with 4 GB. Probably the slowest link is the external USB drive used to hold the backup on the server,

Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Michael Stowe
Probably the slowest link is the external USB drive used to hold the backup on the server, formatted as ext3. In that case, let me add don't do this, it's insanely slow to my list of suggestions. -- Live Security

Re: [BackupPC-users] Improving large rsync backup performance

2012-07-09 Thread Kenneth Porter
On Monday, July 09, 2012 2:19 PM -0500 Les Mikesell lesmikes...@gmail.com wrote: See the docs about adding '--checksum-seed=32761'. It will save reading/uncompressing the server-side copy for the next comparison, but note that it doesn't start working until after the 2nd full run with an

[BackupPC-users] Improving large rsync backup performance

2012-07-08 Thread Kenneth Porter
I've got a user running Win7-64 with 3 large drives: C (original boot), D (data), and G (Win7 boot). I've configured rsyncd on it to serve them as 3 modules named for the drive letters. A full backup to my CentOS 5 box takes about 40 hours, and an incremental takes about 8, so I've configured