On Tue, 2006-01-24 at 23:07 +0100, Arno Lehmann wrote:
> Hi,
>
> On 1/24/2006 9:48 PM, Reggie Dugard wrote:
> > I've just started to use Bacula at our site and I've tried to find the
> > answer to this question in the manual and in the list archives, but I
> > haven't had any luck, so I thought I'd try posting to the list myself.
> > Please point me to the appropriate place if this has already been
> > answered. I'm running version 1.38.0 on Fedora Core 4. I'm running one
> > director and one storage daemon. The definitions of the storage are
> > below.
> >
> > I have 2 8-tape DDS-4 autochangers each of which has one drive. I was
> > originally using bacula with just one of these autochangers and
> > everything worked well except that a full backup took 9-10 tapes so I
> > couldn't run it completely unattended. Now I've moved more clients over
> > to use bacula along with the second autochanger and I'd like bacula to
> > be able to use tapes from both autochangers during the full backup. I
> > have 2 pools of tapes, one for full backups and one for differentials
> > and ideally it wouldn't matter if I mixed tapes from both pools in a
> > single autochanger.
> >
> >>From reading the manual, it seems that I need to specify a particular
> > Storage for each job and since each Storage maps to a single
> > autochanger, I haven't been able to say "just use any DDS-4 capable
> > device and find the tape you want"
> >
> > Have I missed something in my search? Is this currently possible with
> > bacula or should I just split up my clients to use one or the other of
> > the changers?
>
> No, you didn't miss anything. Unfortunately, Bacula can't link multiple
> autochangers together.
>
> What you *could* try is to set up one virtual autochanger which uses the
> physically different autochangers. This would require serious
> modification of mtx-changer, and you'd have to take great care that
> Bacula never tries to load a tape from autoloader 1 to the drive in
> autoloader 2 :-)
>
> The easier solution would probably be to have parts of your data be
> stored to each autochanger, and separating by client would probably be
> the easiest solution.
>
OK, I attempted to do this, but I don't think I fully understand
bacula's method for choosing a tape. I currently have 2 Pools, one for
Full backups and one for Differentials. I put some tapes from each pool
into each of the autochangers (odd numbered tapes in one, even in the
other) assuming bacula would choose to write on a tape that was in the
storage device defined for a particular job before asking me to mount a
tape that is already in another device.
Here's an example. I have the volumes BacDiff007 and BacDiff009 in the
"Dell" autochanger storage device. BacDiff007 has status Full and
BacDiff009 has status Append and is mounted. When my differential
backup job starts it immediately unmounts BacDiff009 and mounts
BacDiff007, but then sees that it is full and can't continue. It almost
looks like the director thinks that BacDiff006 which is in slot 1 of the
"Sony" autochanger is in slot 1 of the "Dell" changer.
Below is some more info. Am I missing some setting that would further
differentiate the 2 autochangers and what tapes they contain for the
Director.
Thanks again,
Reggie
25-Jan 13:03 hare-sd: 3304 Issuing autochanger "load slot 1, drive 0" command.
25-Jan 13:04 hare-sd: 3305 Autochanger "load slot 1, drive 0", status is OK.
25-Jan 13:04 hare-sd: 3301 Issuing autochanger "loaded drive 0" command.
25-Jan 13:04 hare-sd: 3302 Autochanger "loaded drive 0", result is Slot 1.
25-Jan 13:04 hare-sd: mamba.2006-01-25_13.02.34 Warning: Director wanted Volume
"BacDiff006".
Current Volume "BacDiff007" not acceptable because:
1000 OK VolName=BacDiff007 VolJobs=1 VolFiles=0 VolBlocks=7154
VolBytes=461518844 VolMounts=1 VolErrors=3 VolWrites=7156 MaxVolBytes=0
VolCapacityBytes=0 VolStatus=Full Slot=1 MaxVolJobs=0 MaxVolFiles=0 InChanger=1
VolReadTime=0 VolWriteTime=0 EndFile=0 EndBlock=7154 VolParts=0 LabelType=0
25-Jan 13:04 hare-sd: 3301 Issuing autochanger "loaded drive 0" command.
25-Jan 13:04 hare-sd: 3302 Autochanger "loaded drive 0", result is Slot 1.
25-Jan 13:04 hare-sd: mamba.2006-01-25_13.02.34 Warning: Director wanted Volume
"BacDiff006".
Current Volume "BacDiff007" not acceptable because:
1000 OK VolName=BacDiff007 VolJobs=1 VolFiles=0 VolBlocks=7154
VolBytes=461518844 VolMounts=1 VolErrors=3 VolWrites=7156 MaxVolBytes=0
VolCapacityBytes=0 VolStatus=Full Slot=1 MaxVolJobs=0 MaxVolFiles=0 InChanger=1
VolReadTime=0 VolWriteTime=0 EndFile=0 EndBlock=7154 VolParts=0 LabelType=0
2
> Hope that helps,
>
> Arno
>
> > Thanks for your help.
> >
>
Pool: Differentials
+---------+------------+-----------+----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
| MediaId | VolumeName | VolStatus | VolBytes | VolFiles | VolRetention |
Recycle | Slot | InChanger | MediaType | LastWritten |
+---------+------------+-----------+----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
| 119 | BacDiff005 | Full | 28,591,249,133 | 31 | 5,184,000 |
1 | 5 | 0 | DDS-4 | 2006-01-20 15:20:19 |
| 120 | BacDiff006 | Append | 30,055,494,201 | 32 | 5,184,000 |
1 | 1 | 1 | DDS-4 | 2006-01-24 10:14:51 |
| 121 | BacDiff007 | Full | 461,518,844 | 0 | 5,184,000 |
1 | 1 | 1 | DDS-4 | 2006-01-24 22:29:17 |
| 122 | BacDiff008 | Append | 1 | 0 | 5,184,000 |
1 | 2 | 1 | DDS-4 | 0000-00-00 00:00:00 |
| 124 | BacDiff009 | Append | 1 | 0 | 5,184,000 |
1 | 2 | 1 | DDS-4 | 0000-00-00 00:00:00 |
*** From bacula-dir.conf:
Storage {
Name = Sony
Address = hare.merfinllc.com
SDPort = 9103
Password = "xx"
Device = Sony
Media Type = DDS-4
Autochanger = yes
}
Storage {
Name = Dell
Address = hare.merfinllc.com
SDPort = 9103
Password = "xx"
Device = Dell
Media Type = DDS-4
Autochanger = yes
}
*** From bacula-sd.conf:
Autochanger {
Name = TSL-11000
Device = Sony
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg1
}
Device {
Name = Sony
Media Type = DDS-4
Archive Device = /dev/nst0
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
AutoChanger = yes
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
Autochanger {
Name = DellChanger
Device = Dell
Changer Command = "/etc/bacula/mtx-changer %c %o %S %a %d"
Changer Device = /dev/sg3
}
Device {
Name = Dell
Media Type = DDS-4
Archive Device = /dev/nst1
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
AutoChanger = yes
# Enable the Alert command only if you have the mtx package loaded
Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
}
--
Reggie Dugard <[EMAIL PROTECTED]>
Merfin, LLC
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