Re: [Bacula-users] bacula can't make use of multi drives
2014-11-20 03:17:05
On 19-11-2014 18:52, Josh Fisher wrote:
It's not a bug, but just the way it's designed.
"Prefer Mounted Volumes=no" it's a directive that could
allow to write multiple volumes within the same pool at the
same time, however this is a little buggy and not
recommended at this time.
It's not a bug, but it is a little buggy??
I think that the only problem with setting "Prefer Mounted Volumes
= no" is that it will result in a lot of moving of a volume back
and forth between drives. While it might not be a bug, since it
works as advertised, it CAN be a problem. For tape, it will really
slow things down because it takes a substantial time to move a
tape out of one drive and into another. For disk virtual
autochangers, though, the moving between "drives" is simply
closing a disk file and then re-opening it, meaning that the delay
is very negligible.
I would really prefer autochanger to move volumes back and forth
rather than wait a couple of hours for the job to finish especially
when there are 3 drives just sitting lazy.
If there
is some other issue, like a race condition that I am not aware of,
then that would indeed be a bug in my book. But I have used
PreferMountedVolumes=no for disk virtual autochanger without (so
far) encountering any such problems, just the swapping between
drives. And for disk virtual autochangers, I don't see that as a
problem in and of itself.
Regards,
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Heitor Medrado de Faria - LPIC-III | ITIL-F
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