Hi!
Freeze sounds like kernel problem = not BackupPC, it only triggers it
because it uses resources intensively.
In my experience this has been the cause (in similar cases to yours ) of
either faulty hardware, faulty config or crappy drivers:
Faulty hardware can be detected by stress-testing the drive (dd,
urandom, shred and others) and RAM (memtest86) with random reads and
writes in a hot environment.
A common faulty config on raid is that there's been a problem in
allocating the space which results in bad access (if your system is on
the same partition as your pool it is a good explanation for your
symptoms) and the drive becomes at least read only.
Finally some drivers for IDE/SATA chips are poor (often because the
vendor has not released any specs) causing errors in some situations.
This can often be remedied by switching SATA from "IDE Mode" to "AHCI"
or similar in your BIOS.
In general, dmesg is your friend - try following the last seconds before
the system freezes locally and remotely as when you want to log in it is
too late :).
Good luck!
/johan
Christopher Derr wrote:
> I'm currently running the latest backuppc version that Ubuntu officially
> supports (it's behind Debian as far as I can tell and I haven't tried to
> use the Debian version): 3.0.0. Apt-get shows it's the latest available
> through Stable. Anyway, the system (Tyan 2912G2NR, 8 GB memory, 4 TB in
> RAID 5) crashes often. Becomes untouchable, I go to the console, hit
> enter to bring up a logon prompt, then the machine is officially
> frozen. I figure it's a kernel panic, but I'm not seeing anything
> telling in any log I can find. This happens almost exclusively when
> backing up a one of our Windows fileservers using rsync with 700 GB+
> data over our 1 Gb link.
>
> My thoughts are it could be Ubuntu or it could be the hardware. They
> system doesn't seem to have any issues except on this one machine's
> backups, and even then it's not every time (just most of the time). I'm
> considering moving to Debian and the latest version of Backuppc (3.1...I
> realize 3.2 is still in beta). I think I just need to backup my
> /etc/backuppc config files but if I keep the /var/lib/backuppc mount, I
> should be able to reinstall the system without affecting the backups.
> Not sure if the 3.1 upgrade is going to talk with the 3.0 backup files
> though.
>
> Thoughts about Ubuntu or my upgrade in general?
>
> Thanks,
>
> Chris
>
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