Hi

We've been struggling with this problem for a few weeks and i'm completely out 
of ideas on how to permanently solve it, so any help will be appreciated.
We have a 'Weekly' pool which comprises 5 different LTO-3 tapes: W001, W002, 
... W005. One tape per whole week. This pool is configured this way:

Pool {
  Name = Weekly
  Pool Type = Backup
  Recycle = yes
  AutoPrune = yes
  Volume Use Duration = 4 days
  Volume Retention = 15 days
  Recycle Oldest Volume = yes
  Purge Oldest Volume = yes
  Maximum Volumes = 5
}

And backup jobs follow this schedule:

Schedule {
  Name = "MonthlyCycle"
  Run = Level=Full Pool=Weekly 1st thu at 23:05
  Run = Level=Full Pool=Weekly 2nd-5th mon at 23:05
  Run = Level=Incremental Pool=Weekly 2nd-5th thu at 23:05
}

The problem is that bacula always recycle the wrong tape on Mondays. For 
example, if it is supposed to use tape 'W005' this week, it will recycle and 
ask for 'W001', next week's tape. Backup jobs fail and this error comes up:

23-Oct 23:05 br01 JobId 666: Start Backup JobId 666, 
Job=Backup-br01.2010-10-25_23.05.00_36
23-Oct 23:05 br01 JobId 666: Using Device "LTO-3"
23-Oct 23:05 br01 JobId 666: Warning: Director wanted Volume "W001".
    Current Volume "W005" not acceptable because:
    1998 Volume "W005" status is Used, but should be Append, Purged or Recycle.
23-Oct 23:05 br01 JobId 666: Please mount Volume "W001" or label a new one for:
    Job:          Backup-br01.2010-09-20_23.05.00_36
    Storage:      "LTO-3" (/dev/nst0)
    Pool:         Semanal
    Media type:   LTO-3

Funny thing is that W005 is in fact the oldest volume and first on the queue to 
be recycled.

Pool: Weekly
+---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
| MediaId | VolumeName | VolStatus | Enabled | VolBytes        | VolFiles | 
VolRetention | Recycle | Slot | InChanger | MediaType | LastWritten         |
+---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
|      11 | W005       | Used      |       1 |               1 |        0 |    
1,296,000 |       1 |    0 |         0 | LTO-3     | 2010-09-23 23:13:53 |
|      20 | W001       | Recycle   |       1 |               1 |        0 |    
1,296,000 |       1 |    0 |         0 | LTO-3     | 2010-09-30 23:11:20 |
|      21 | W002       | Used      |       1 | 441,216,792,576 |      445 |    
1,296,000 |       1 |    0 |         0 | LTO-3     | 2010-10-08 02:18:54 |
|      27 | W003       | Used      |       1 | 446,883,913,728 |      451 |    
1,296,000 |       1 |    0 |         0 | LTO-3     | 2010-10-15 17:41:38 |
|      28 | W004       | Used      |       1 | 450,299,824,128 |      458 |    
1,296,000 |       1 |    0 |         0 | LTO-3     | 2010-10-21 23:14:39 |
+---------+------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+

*llist volume=W005
          MediaId: 11
       VolumeName: W005
             Slot: 0
           PoolId: 3
        MediaType: LTO-3
     FirstWritten: 1969-12-31 21:00:00
      LastWritten: 2010-09-23 23:13:53  <- Clearly, THE oldest tape.
        LabelDate: 2010-09-21 09:11:28
          VolJobs: 0
         VolFiles: 0
        VolBlocks: 0
        VolMounts: 11
         VolBytes: 1
        VolErrors: 0
        VolWrites: 19,940,451
 VolCapacityBytes: 0
        VolStatus: Used
          Enabled: 1
          Recycle: 1
     VolRetention: 1,296,000
   VolUseDuration: 604,800
       MaxVolJobs: 0
      MaxVolFiles: 0
      MaxVolBytes: 0
        InChanger: 0
          EndFile: 444
         EndBlock: 4,462
         VolParts: 0
        LabelType: 0
        StorageId: 1
         DeviceId: 0
       LocationId: 0
     RecycleCount: 3
     InitialWrite: 0000-00-00 00:00:00
    ScratchPoolId: 0
    RecyclePoolId: 0
          Comment: NULL

*llist volume=W001
          MediaId: 20
       VolumeName: W001
             Slot: 0
           PoolId: 3
        MediaType: LTO-3
     FirstWritten: 1969-12-31 21:00:00
      LastWritten: 2010-09-30 23:11:20  <-Not the oldest tape
        LabelDate: 2010-09-27 23:05:00
          VolJobs: 0
         VolFiles: 0
        VolBlocks: 0
        VolMounts: 7
         VolBytes: 1
        VolErrors: 0
        VolWrites: 7,024,038
 VolCapacityBytes: 0
        VolStatus: Recycle
          Enabled: 1
          Recycle: 1
     VolRetention: 1,296,000
   VolUseDuration: 604,800
       MaxVolJobs: 0
      MaxVolFiles: 0
      MaxVolBytes: 0
        InChanger: 0
          EndFile: 446
         EndBlock: 5,798
         VolParts: 0
        LabelType: 0
        StorageId: 1
         DeviceId: 0
       LocationId: 0
     RecycleCount: 2
     InitialWrite: 0000-00-00 00:00:00
    ScratchPoolId: 0
    RecyclePoolId: 0
          Comment: NULL

So every Monday I must open bconsole and manually change back the volume status 
of the next tape (in this case W001) to 'Used', so that the current tape is 
correctly recycled. But I think this action could be actually provoking the 
situation, but I'm not sure. I'm thinking about maybe changing 'Volume 
Retention' to a longer time, 28 days for example.

Any ideas?

Rodrigo Ferraz
CONCEPT NETSERVICES
www.conceptnetservices.com


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