Hi all,

I have a setup where I backup some files into a "File" storage
(i.e. not on tape). I have set the maximum volume size to something
around 2 GB to avoid some problems when transfering them later via
FTP, storing them on other file systems etc.

One of the files to be backuped has around 3.5 GB. In all my backups
this file (obviously) spans two volumes.

The problem: this large file can not be restored.

Using the "restore" command in the bacula console results in this:

 * restore
     ...
 Start Restore Job 1und1big-restore.2009-03-18_13.02.08
 Using Device "1und1big"
 Ready to read from volume "1und1big-0146" on device "1und1big" 
(/var/backup/1und1big).
 End of Volume at file 0 on device "1und1big" (/var/backup/1und1big), Volume 
"1und1big-0146"
 Ready to read from volume "1und1big-0147" on device "1und1big" 
(/var/backup/1und1big).
 Forward spacing Volume "1und1big-0147" to file:block 0:202.
 Error: block.c:318 Volume data error at 0:1143604416!
 Block checksum mismatch in block=48729 len=64512: calc=b8260f44 blk=1551553a
 Error: attribs.c:421 File size of restored file 
/tmp/bacula-restore/1und1big/var/lib/postgresql/backup/database.dump not 
correct. Original 3682990713, restored 3120824320.
 

When using "bextract" the following happens:

> bextract -v -V "1und1big-0146|1und1big-0147" .
bextract: match.c:249-0 add_fname_to_include prefix=0 gzip=0 fname=/
bextract: butil.c:282 Using device: "1und1big" for reading.
Ready to read from volume "1und1big-0146" on device "1und1big" 
(/var/backup/1und1big).
... (some extracted files)
-rw-r-----   1 root     bacula  3682990713 2009-03-15 21:02:24  
./var/lib/postgresql/backup/database.dump
Error: block.c:318 Volume data error at 0:329269449!
Block checksum mismatch in block=5105 len=64512: calc=7bf50f5a blk=66f71ed4
Error: attribs.c:421 File size of restored file 
./var/lib/postgresql/backup/database.dump not correct. Original 3682990713, 
restored 309133312.
bextract: acquire.c:436-0 dir_update_vol_info. label=64 Vol=1und1big-0146
131 files restored.


This happens for both full backups and for incremental backups. This
is very likely no hardware defect on my hard disk because this happens
with ALL backups I've ever made.

I've even tried to use bscan to update the catalog, but this did
not change anything - the error messages during "restore" and "bextract"
are the same.


Any ideas how to restore this file? This is a kind of desaster
situation because at the moment I NEED this backup. So of course
it would be nice to know how to avoid this problem for future backups.

But I would also be lucky about a way how to completely restore
this file (I guess all relevant data is available in the backups files, 
but the restore process does not handle it well).

Any help possible?
Thanks and regards
-stefan-



My configuration:
-----------------

Bacula Version: 2.4.3 (10 October 2008) x86_64-pc-linux-gnu gentoo 


bacula-dir.conf (shortened to the relevant parts):
--------------------------------------------------

FileSet {
  Name = 1und1big

  Include {
    Options {
      compression = GZIP
    }
    File = /var/lib/postgresql/backup/
    File = ... (some more dirs here)
  }
}

Storage {
  Name = 1und1big
  Address = 127.0.0.1
  Password = "password-storage-1und1big"
  Device = 1und1big
  MediaType = File
}

Pool {
  Name = 1und1big
  Pool Type = Backup  
  Storage = 1und1big
  Maximum Volume Jobs = 1
  Maximum Volume Bytes = 2000000000
  Volume Retention = 30 days
  Label Format = "1und1big-"
}


bacula-sd.conf:
---------------

Device {
  Name = 1und1big
  Archive Device = "/var/backup/1und1big"
  Device Type = File
  Media Type = File
  Always Open = no
  Removable Media = no
  Random Access = yes
  LabelMedia = yes
}



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