On 7/1/2016 5:17 AM, Area de Sistemas wrote:
Hi,
We have been using bacula with DISK BASED BACKUP during years (in a
multi-pool, multi-device configuration)
Recently we have "redefined" the devices as autochangers according the
Bacula documentation.
Although the "whole thing" appears to be running ok we have TWO questions:
1) In the previous "device mode", the MediaType of all defined devices
was set as "File"...Now, in the "autochanger mode" I've also used the
same MediaType "File" for ALL devices in ALL autochangers...
* Is this right or MUST I use a different MediaType for every
autochanger (in all its devices)?
A different MediaType should be used for each autochanger. This is
because a volume on one autochanger cannot be "loaded" into another,
since the volume files are on different disks.
* If I must use a different MediaType...the change implies some
problem with existent volumes? Must I do/change something with the
existent volumes?
Maybe not. If you also use different pools for each autochanger, so that
each pool contains volumes from only one autochanger, then it might not
matter. Jobs using a single pool would only ever use one autochanger.
However, with pools that have volumes from more than one autochanger,
there is a problem. A job is only assigned a single device to write on,
so if the pool contains volumes that are on another device, then Bacula
may select a volume that cannot be loaded into the assigned device. This
is why the MediaType should be different for each autocahnger. It
prevents Bacula from selecting a volume from a pool that cannot be used
in the assigned device.
2) According Bacula documentation is possible to "reserve" a device in
an autochanger setting the property "Autoselect=no" in that device
definition but...
* How can I force bacula to use these reserved devices for a
restore command?
* The Bacula documentation sais that this can be done but NOT HOW,
and apparently the restore command (at least interactively) only
permits specify the Storage, not the device...
Regards.
--
Jose Manuel Blanco.
------------------------------------------------------------------------
Area de Sistemas
Servicio de las Tecnologias de la Informacion y Comunicaciones (STIC)
Universidad de Valladolid
Edificio Alfonso VIII, C/Real de Burgos s/n. 47011, Valladolid - ESPAÑA
Telefono: 983 18-6410, Fax: 983 423271
E-mail: [email protected]
------------------------------------------------------------------------
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