Kern Sibbald wrote:
On Thursday 02 June 2005 22:29, Danny Butroyd wrote:
Matthias Vogt wrote:
Hi,
I testing Bacula 1.36.0 at the moment. Everthing work fine, except the
restore makes waves. If I restore tape stored files I sometime get an
error like this
--------------
DNS-and-FTP-Server: -rwxr-xr-x 1 root root 4761012 2005-05-23
08:23:33 /home/bacula-restores/opt/blackdown-jdk-1.4.
2.01/jre/lib/i386/server/libjvm.so
basis-server-sd: RestoreFiles.2005-06-02_18.34.53 Error: block.c:304
Volume data error at 0:546! Block checksum mismatch in bl ock 546:
calc=e10b0d03 blk=243833da
DNS-and-FTP-Server: RestoreFiles.2005-06-02_18.34.53 Error: attribs.c:339
File size of restored file /home/bacula-restores/opt
/blackdown-jdk-1.4.2.01/jre/lib/i386/server/libjvm.so not correct.
Original 4761012, restored 1409024. basis-server-dir:
RestoreFiles.2005-06-02_18.34.53 Error: Bacula 1.36.0 (20Oct04):
02-Jun-2005 18:35 JobId: 2
Job: RestoreFiles.2005-06-02_18.34.53
Client: DNS-and-FTP-Server
Start time: 02-Jun-2005 18:34
End time: 02-Jun-2005 18:35
Files Expected: 247,101
Files Restored: 2,106
Bytes Restored: 34,801,378
Rate: 828.6 KB/s
FD Errors: 1
FD termination status: Error
SD termination status: Error
Termination: *** Restore Error ***
-------------
I use a HP StorageWorks Ultrium 460 Tape Drive (LTO-2). I've read that
this error is maybe caused by an damage tape drive or tape. Is that true?
I have tested different tapes and the error somtimes still appears deping
on amount of data or whatever.
I have had this problem before and i too thought at first it was dodgy
media/drive/scsi card, however, the problem "went away" when I upgraded
to the latest version of bacula (currently 1.36.3). I also use and
LTO-2 tape libraray (Overland Powerloader) but im not sure that this has
anything to do with the issue :)
The most likely source of this kind of error is a bad tape or possibly bad
RAM. It would be *really* hard for Bacula to create a block checksum error
because of a bug. I can believe that the problem went away when you
upgraded, but it was most likely because you changed tapes.
All I would say is that (in my experience) the newer version seems to
deal with the error of having file size mismatches better (i.e. before
it stopped the whole restore process, whereas now it complains but
carries on)
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