Re: [Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-07-15 Thread Frank Altpeter
Hi, Sorry to warm up this slightly old discussion, but since I'm suffering from a similar problem, I just stumpled upon this thread while searching for a solution. In my setting, it's a disk-to-disk-to-tape setup, I'm writing the data from my clients to a RAID-6 storage (15 x 1,5TB storage system

Re: [Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-06-22 Thread Lukas Kolbe
Am Montag, den 21.06.2010, 11:27 -0400 schrieb John Drescher: > On Mon, Jun 21, 2010 at 7:35 AM, Lukas Kolbe wrote: > > Am Montag, den 21.06.2010, 11:06 +0100 schrieb Alan Brown: > >> On 21/06/10 10:56, Lukas Kolbe wrote: > >> > > >> > For comparison, I dd'ed a volume to /dev/null while the copy j

Re: [Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-06-21 Thread John Drescher
On Mon, Jun 21, 2010 at 7:35 AM, Lukas Kolbe wrote: > Am Montag, den 21.06.2010, 11:06 +0100 schrieb Alan Brown: >> On 21/06/10 10:56, Lukas Kolbe wrote: >> > >> > For comparison, I dd'ed a volume to /dev/null while the copy job was >> > running: >> > [r...@shepherd ~]# dd if=/var/bacula/dp/fs1/Vo

Re: [Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-06-21 Thread Lukas Kolbe
Am Montag, den 21.06.2010, 11:06 +0100 schrieb Alan Brown: > On 21/06/10 10:56, Lukas Kolbe wrote: > > > > For comparison, I dd'ed a volume to /dev/null while the copy job was > > running: > > [r...@shepherd ~]# dd if=/var/bacula/dp/fs1/Vol0070 of=/dev/null bs=1M > > 917504 bytes (9.2 GB) copie

Re: [Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-06-21 Thread Alan Brown
On 21/06/10 10:56, Lukas Kolbe wrote: > > For comparison, I dd'ed a volume to /dev/null while the copy job was > running: > [r...@shepherd ~]# dd if=/var/bacula/dp/fs1/Vol0070 of=/dev/null bs=1M > 917504 bytes (9.2 GB) copied, 12.0225 seconds, 763 MB/s > > But dd'ing it to another file reveals

[Bacula-users] [semi-solved] LTO-4 tape: only 20mb/sec when used with bacula

2010-06-21 Thread Lukas Kolbe
Am Montag, den 21.06.2010, 01:20 +0200 schrieb Lukas Kolbe: > Thanks for the hints. Changing the block sizes to the ones you mentioned > doesn't help unfortunatly. > > Maybe it is a completely different problem: The backups are made to the > diskpool in parallel, from a few different clients. The