Hello,

I try to replace full backups by virtualfull backups.

I use a virtual autocharger( disk changer, also tried vchanger)  with 10 
slots and 2 drives

the second virtuallfull hangs waiting for a volume that is already mounted 
( idle) in another drive

This behaviour is 100% reproducible ( bacula 5.02 ).



i test my setup with the following sequence:

A/ incremental ( transformed to full )  OK stored in pool incr and volume1
B/ Virtuall full  OK  stored in volume2 and pool vfull
C/ incremental OK appended to Volume1 pool incr

DEVICE STATUS return the folluwing result:

Device status:
Autochanger "usb-changer" with devices:
   "usb-changer-drive-0" (/tmp/bacula/drive0)
   "usb-changer-drive-1" (/tmp/bacula/drive1)
Device "FileStorage1" (/tmp/t1) is not open.
Device "usb-changer-drive-0" (/tmp/bacula/drive0) is mounted with:
    Volume:      Vol1
    Pool:        Incr
    Media type:  File
    Slot 1 is loaded in drive 0.
    Total Bytes=967,680 Blocks=14 Bytes/block=69,120
    Positioned at File=3 Block=0
Device "usb-changer-drive-1" (/tmp/bacula/drive1) is mounted with:
    Volume:      Vol2
    Pool:        vfull
    Media type:  File
    Slot 2 is loaded in drive 1.
    Total Bytes=838,656 Blocks=12 Bytes/block=69,888
    Positioned at File=1 Block=0
====

Used Volume status:
Vol1 on device "usb-changer-drive-0" (/tmp/bacula/drive0)
    Reader=0 writers=0 devres=0 volinuse=0
Vol2 on device "usb-changer-drive-1" (/tmp/bacula/drive1)
    Reader=0 writers=0 devres=0 volinuse=0
====


D /run a virtual full

bacula chooses a new volume for that backup ( volume 3 )
for whatever reason bacula wants to load volume2 ( the previous virtual 
full )
in drive 0 but the volume  is already sitting idle in drive 1

then the backup hangs and bacula asks the opetrator to mount volume2 on 
drive0

how can i tell  bacula to check if a volume is already mounted before trying
to load it in another drive ??

====

*run job=BackupClient1 level=VirtualFull  yes
Job queued. JobId=158
*
07-Sep 19:47 box.mike.dom-dir JobId 158: Start Virtual Backup JobId 158,
Job=BackupClient1.2010-09-07_19.47.15_09
07-Sep 19:47 box.mike.dom-dir JobId 158: Bootstrap records written to
/var/lib/bacula/box.mike.dom-dir.restore.2.bsr
07-Sep 19:47 box.mike.dom-dir JobId 158: Using Volume "Vol3" from 'Scratch'
pool.
07-Sep 19:47 box.mike.dom-dir JobId 158: Using Device "usb-changer-drive-1"
07-Sep 19:47 box.mike.dom-sd JobId 158: 3307 Issuing autochanger "unload 
slot
1, drive 0" command.

then backup hangs .....
***************************************************

here is my conf :

Pool {
  Name = Incr
  Pool Type = Backup
  Recycle = yes                       # Bacula can automatically recycle
Volumes
  AutoPrune = yes                     # Prune expired volumes
  Volume Retention = 365 days         # one year
  Storage = changer1
  ActionOnPurge = Truncate
  RecyclePool = Scratch
  Next Pool = vfull
}

Pool {
  Name = vfull
  Pool Type = Backup
  Recycle = yes                       # Bacula can automatically recycle
Volumes
  AutoPrune = yes                     # Prune expired volumes
  Volume Retention = 365 days         # one year
  Storage = changer1
  ActionOnPurge=Truncate
  Next Pool = External
  RecyclePool = Scratch
  }
Storage {
  Name = changer1   # same as 'changer_name' in the vchanger config file
  Address = localhost
  SDPort = 9103
  Password = "A"
  Device = usb-changer  # name of the Autochanger resource in bacula-sd.conf
  Media Type = File
  Autochanger = yes
  Maximum Concurrent Jobs = 2
}


Autochanger {
  Name = usb-changer
  Device = usb-changer-drive-0
  Device = usb-changer-drive-1
  Changer Command = "/etc/bacula/scripts/disk-changer %c %o %S %a %d"
#  Changer Command = "/usr/local/bin/vchanger %c %o %S %a %d"
#  Changer Device = "/etc/bacula/c1.conf"
  Changer Device = "/etc/bacula/scripts/disk-changer.conf"

}

#---  drive 0 of the usb-changer autochanger
Device {
  Name = usb-changer-drive-0
  DriveIndex = 0
  Autochanger = yes;
  DeviceType = vtape
  MediaType = File
  ArchiveDevice = /tmp/bacula/drive0
  RemovableMedia = no;
  RandomAccess = yes;

  }

#---  drive 1 of the usb-changer autochanger
Device {
  Name = usb-changer-drive-1
  DriveIndex = 1
  Autochanger = yes;
  DeviceType = vtape
  MediaType = File
  ArchiveDevice = /tmp/bacula/drive1
  RemovableMedia = no;
  RandomAccess = yes;

  }

thanks
Mike



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