Hello,
2013/5/3 Dimitri Maziuk <dmaz...@bmrb.wisc.edu>
> On 05/03/2013 10:04 AM, Radosław Korzeniewski wrote:
>
> >> I have a storage server with 12 SATA drives on an HBA. I want to backup
> >> to those drives, using file volumes of 50GB or less. The idea is to
> >> manually swap the drives as they get full.
> >>
> >
> > Drop this idea. If you need to move your backups out of datacenter then
> buy
> > a tape library.
>
> We've used tape libraries for quite some time. By now we have ~20 years
> of good reasons to want to throw them out and never ever touch one again.
>
For online archive storage - Yes. Disks are a far better then tape storage.
For off-line storage disks are far more fragile then tapes. Sure, YMMV.
>
> > Why not to use LVM or RAID to use all available hard disk space (12 x
> sata)
> > for backups? Believe me, it is simpler to create a single filesystem for
> > backups then use vchanger script (it is overcomplicated and IMVHO
> useless).
>
> Yes, and in a place that doesn't have 10 years retention policy I have a
> 36-drive box that's set up exactly like that. Unfortunately this
> installation comes with different requirements.
>
>
I don't know your requirements, so I can't design a perfect solution.
> I'll give it a few more days before I bite the bullet, but so far
> vchanger looks like the least bad option. Despite being the "moving
> symlink" "solution" that always felt very icky to me and being
> overcomplicated at that.
>
> Ideally one should be able to specify multiple Device's in the Storage
> and have bacula write to them in turn until all get full.
What should be a purpose of this behavior? I didn't get a point.
If you have a single tape library then if you get full on one device then
you get full on all devices in that library. No switching will help in this
case.
If you have more libraries then device switching on full will be useful.
But keep in mind it is not a common scenario and has no direct support. If
you need a direct support for that you can sponsor required development or
develop it yourself.
> A couple of
> extra "for" loops and another list is basically all it takes to support
> that, so I'm slightly surprised it's not there already.
If you want you can add required support by sending a patch to the
bacula-devel list.
best regards
--
Radosław Korzeniewski
rados...@korzeniewski.net
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