You could configure your Bacula to use new volume for every job, this could 
solve your problem. 

-----Original Message-----
From: epiuse [mailto:bacula-forum AT backupcentral DOT com] 
Sent: Thursday, October 15, 2009 10:45 AM
To: bacula-users AT lists.sourceforge DOT net
Subject: [Bacula-users] How to avoid "The sizes do not match!"?


Hi there,

We're currently using bacula 3.0.2 to backup some windows XP and Vista clients.

Every now and then, while a backup (Diff or Full) are running, the user may 
turn of his/her laptop, network issues may occur or whatever else may cause a 
connection error and then obviously the backup fails.

My problem is that each time this happens and the next client's backup starts 
to make use of the same volume, it gives me the "Error: Bacula cannot write on 
disk Volume "Diff_Vol0217" because: The sizes do not match!" error message and 
marks the volume in error in the catalog.

Is there any wau to avoid this happening each time?

Pool definition:
Pool {
        Name = Diff
        Label Format = "Diff_Vol"
        Pool Type = Backup
        Recycle = yes           # Bacula can automatically recycle Volumes
        AutoPrune = yes         # Prune expired volumes
        Volume Retention = 3 days
        Maximum Volumes = 7
        Maximum Volume Bytes = 40G
}

Thanks in advance :)

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