On 5/14/2020 7:23 AM, Alberto Bortolo wrote:
Hello,
I'm completely a newbie with Bacula: I'm studying all the guides and
just few days ago I've been able to us it! Success!
But I still cannot understand how the virtual autochangers work:
I touched very little from the default config and I just created for
different network shares and mounted them in the main root.
This is my config (I just leave relevant parts)
Autochanger {
Device = FileChgr1-Dev1, FileChgr1-Dev2
Changer Command = ""
Changer Device = /dev/null
...
}
Device {
Name = FileChgr1-Dev1
Media Type = File1
Archive Device = /backup/bacula1
...
}
Device {
Name = FileChgr1-Dev2
Media Type = File1
Archive Device = /backup/bacula1-alt
...
}
The result is I made a successful backup on /backup/bacula1/Volume1
but when I try to restore it, the job is looking in the other File1
device ( /backup/bacula1-alt/Volume1 ) that of course is empty,
because Volume1 was created in the other path.
Yes. if you are going to use multiple Archive Device paths, then you
must use a different Media Type for each different Archive Device path.
That may or may not work for your use scenario. If you want multiple
mountpoints to be treated as one group of volumes with the same media
type and any Device to load any volume on any of the mountpoints, then
look into vchanger on Sourceforge.
I was supposing that during restoration the program will scan to both
autochanger paths to see which one has the most recent record, but
seems it doesn't work in this way.
If I try to setup the "Archive Device" option to the same path it
works flawlessy (and it seems the "Best Practices for DiskBased
Backup" guid recommends something like that) so I cannot understand
the difference of making an autochanger with just one device.
The Archive Device for FileChgr1-Dev2 can be the same as the Archive
Device for FileChgr1-Dev2. You can have as many Device entries as
wanted, all with the same Archive Device. The reason would be to allow
multiple simultaneous jobs to run. A Device can have only one volume
file open at a time, but multiple Devices with the same Archive Device
can each have a different file on that mountpount opened.
Thank you in advance for the explanations!
--
Alberto
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