I'm resending this original poster's question because the connection between 
bacula-users and the forum was down for a time.  There will be three more like 
this.


Silvestri wrote:
> Hi all,
> 
> i have a big problem about restore data from bacula backup tapes.
> 
> I have a Fujitsu-Server with Win 2003 Server like OS, and a Virtual Machine 
> with Red Hat Enterprise Linux 5 (guest OS, running Bacula Server).
> 
> Two months ago I upgrade RAM on my server backup; after this date, all the 
> tapes used before upgrade are unreadable for bacula (no more tape label 
> found), but I can use all tapes made after RAM upgrading!!!!
> 
> Backup operations run in correct way, without problems.
> 
> If i try tu run ./btape to obtain informations about the label, this is the 
> returned error message:
> 
> 
> block.c:999 Read error on fd=5 at file:blk 0:0 on device "LTO-2" (/dev/st0). 
> ERR=unable to allocate memory
> 
> 
> I've tried to upgrade buffer size and min and max blocksize with mt and 
> bacula configuration files; in this case the error is:
> 
> block.c:999 Read error on fd=5 at file:blk 0:0 on device "LTO-2" (/dev/st0). 
> ERR=input/output error
> 
> 
> dmesg return this error:
> 
> st0: Block limits 256 - 524288 bytes.
> st0: Failed to read 67584 byte block with 64512 byte transfer.
> 
> And from /var/log/messages:
> 
> grep st0 /var/log/messages
> 
> Mar  5 15:16:45 vmbckte kernel: st 0:0:1:0: Attached scsi tape st0
> Mar  5 15:16:45 vmbckte kernel: st0: try direct i/o: yes (alignment 512 B)
> Mar  5 15:29:01 vmbckte kernel: st0: Block limits 256 - 524288 bytes.
> Mar  5 15:29:08 vmbckte kernel: st0: Failed to read 67584 byte block with 
> 64512 byte transfer.
> 
> I use a SCSI TAPE Tandberg LTO-2, Ultrium-2 tapes
> 
> My idea is that, in some way, Linux and/or Bacula have problems with new 
> configuration.
> 
> Please Help Me! I have no more ideas.... 
> 
>  [Crying or Very sad]


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