Re: Help with dump/restore

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On Fri, 28 Dec 2007 at 10:16am, Scott Ehrlich wrote

So I recently installed an Overland Arcvault 12 tape library on a server to

What kind of tape drive is in there?

I was using a script containing:

/sbin/dump -0v -z2 -f /media/usb_drive/dump0 /home

I played with restore on that, and it tested fine.

For the tape, I thought it would be nice to add /var/log (should have done it before, but didn't think of it...)

Is /var/log its own filesystem?  dump/restore is designed to work on
filesystems, not directories. IIRC (I haven't used dump/restore in a while), full dumps will work OK (with some complaining) but incrementals won't work at all.

Trying to adapt the knowledge to a tape library...

/sbin/dump -0 -v -z2 -f /dev/nst0 /var/log
/sbin/dump -0u -v -z2 -f /dev/nst0 /home

Depending on what tape drive you have and whether or not hardware compression is enabled, you may want to lose the -z. You may want to anyway to save yourself the cycles.

I have a cron job that dumps the results to /var/log/dump.log, and a review of the log file claims all went well. Now for the restore...

I just tried playing with different options of restore, but could not successfully restore anything. I ensured I was in a scratch area so as to hopefully not overwrite current files.

Erm, what options did you try, and what were the results? Did you ensure the tape was positioned properly?

I'd like to keep things as simple as possible - people have suggested legato and amanda, but for now, I would think/hope dump and restore would work.

I'm a big fan and long-time user of amanda, but it's appropriateness here depends on your needs (which you haven't fully spelled out).

--
Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF
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