In the message dated: Fri, 05 Aug 2016 15:35:03 -0300,
The pithy ruminations from Heitor Faria on
<Re: [Bacula-users] mixed media types in a single autochanger with preferred or
der> were:
=>
=> > I've got an autochanger with both LTO6 and LTO5 drives.
=> >
=> > I've got LTO6 and LTO4 media (the LTO4 media can be written in the LTO5
=> > drives, but not in the LTO6).
=>
=> hello, Mark: so I suppose Devices have different Media Type, matching the
tapes one.
Yes.
=>
=> > The LTO6 and LTO4 media have different media types in the catalog.
=> >
=> > I would like to have all:
=> >
=> > Full backups written to the LTO6 media
=> >
=> > Incremental/Differential backups should be written to LTO4 media
=>
=> Just put different tapes in different pools.
Sure, if I put the LTO6 tapes into the "Full" pool, that works.
If I put the LTO4 tapes into the "Incremental" pool, that works.
The problem is the other way around...that:
a Job requires a Pool
a Pool requires a Storage device
a Storage device requires a single MediaType
since LTO4 and LTO6 are not write-compatible, I cannot put them into the same
MediaType (such as "LTO4_to_6").
=>
=> > _unless_ no LTO4 media is available, in which case LTO6 media
=> > can be used.
=>
=> Use the Scratch pool to store your LTO6 tapes. If all tapes from LTO4 pool
get full, Bacula will fetch LTO6 tapes from Scratch.
Unless I misunderstand something.
The bacula-dir.conf requires "MediaType" in the Storage Device definition,
and a Storage Device can only have a single Media Type. So there must
be separate Storage Devices defined (even if they refer to the same
autochanger), each with a subset of the tape drives, divided into separate
media types:
--------------- bacula-dir.conf ------------------
# Definition of file storage device
Storage {
Name = neoxl80-LTO6-x
Address = bacula.server
SDPort = 9103
Password = "123"
Device = neoxl80
Media Type = LTO6
Autochanger = yes
Maximum Concurrent Jobs = 150
}
Storage {
Name = neoxl80-LTO5-x
Address = bacula.server
SDPort = 9103
Password = "123"
Device = neoxl80
Media Type = LTO4
Autochanger = yes
Maximum Concurrent Jobs = 10
}
----------------------------------------------------
------------ bacula-sd.conf ------------------------
Autochanger {
Name = "neoxl80"
Device = neoxl80-LTO5-1
Device = neoxl80-LTO5-2
Device = neoxl80-LTO6-1
Device = neoxl80-LTO6-2
Changer Command = "/opt/bacula/scripts/mtx-changer %c %o %S %a %d"
Changer Device = /dev/changer-neoxl80
}
Device {
Name = neoxl80-LTO5-1
Drive Index = 0
Media Type = LTO4
Device Type = Tape
Archive Device = /dev/tape-LTO5-1
AutomaticMount = yes # when device opened, read it
AlwaysOpen = yes
RemovableMedia = yes
RandomAccess = no
AutoChanger = yes
Autoselect = yes
}
Device {
Name = neoxl80-LTO6-1
Drive Index = 3
Media Type = LTO6
Device Type = Tape
Archive Device = /dev/tape-LTO6-1
AutomaticMount = yes # when device opened, read it
AlwaysOpen = yes
RemovableMedia = yes
RandomAccess = no
AutoChanger = yes
Autoselect = yes
}
----------------------------------------------------
That works just fine...the problem is that the Pool definition also
requires a StorageDevice. So, a single pool (ie., "Incremental") can
only use one of the Storage devices (neoxl80-LTO5-x or neoxl80-LTO6-x).
So, if I have:
-----------------------------------------------------
Pool {
Name = Incremental
Pool Type = Backup
File Retention = 14 weeks
Job Retention = 14 weeks
Volume Retention = 14 weeks
Recycle Pool = Scratch
Storage = neoxl80-LTO5-1
}
# Full backup pool definition
Pool {
Name = Full
File Retention = 18 months
Job Retention = 18 months
Volume Retention = 18 months
Recycle Pool = Scratch
Storage = neoxl80-LTO6-x
}
-----------------------------------------------------
Then "Incremental" jobs can never use LTO6 media, even if no LTO4 media is
available.
=>
=> > Can anyone suggest an example configuration of pools, storage devices,
=> > and autochanger to provide this behavior?
=>
=> > Thanks,
=>
=> Regards,
=>
=> >
=> > Mark
=> >
=> > --
=> > Mark Bergman voice: 215-746-4061
=> >
=> > mark.bergman AT uphs.upenn DOT edu fax:
215-614-0266
=> > http://www.cbica.upenn.edu/
=> > IT Technical Director, Center for Biomedical Image Computing and Analytics
=> > Department of Radiology University of Pennsylvania
=> > PGP Key: http://www.cbica.upenn.edu/sbia/bergman
=> >
=> >
------------------------------------------------------------------------------
=> > _______________________________________________
=> > Bacula-users mailing list
=> > Bacula-users AT lists.sourceforge DOT net
=> > https://lists.sourceforge.net/lists/listinfo/bacula-users
=>
=> --
=> ===========================================================================
=> Heitor Medrado de Faria - LPIC-III | ITIL-F | Bacula Systems Certified
Administrator II
=> Do you need Bacula training? http://bacula.us/video-classes/
=> +55 61 8268-4220
=> Site: http://bacula.us FB: heitor.faria
=> ===========================================================================
=>
--
Mark Bergman voice: 215-746-4061
mark.bergman AT uphs.upenn DOT edu fax:
215-614-0266
http://www.cbica.upenn.edu/
IT Technical Director, Center for Biomedical Image Computing and Analytics
Department of Radiology University of Pennsylvania
PGP Key: http://www.cbica.upenn.edu/sbia/bergman
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