On Thu, Apr 16, 2009 at 12:15:18PM +0200, Uwe Schuerkamp wrote:
> Hi folks,
> 
> the recent talk here of a bug relating to concurrent writes to a
> single backup volume has made me a bit uneasy about one of our
> production bacula servers. 
> 
> We have one system with two tape libraries (so no single volume is
> used by two backups at the same time), however the other system used a
> large RAID with single file volumes (about 400g each). 
> 
> Bacula version there is bacula-2.2.8, and I only configured concurrent
> backups to "2" a couple of weeks ago, so I can't really tell we're
> facing the same issue here as described earlier.
> 
> Has anyone observed this bug in version 2.2.8,

Yes.

Though there are certain conditions needed for it to occur.
Note that I've only ever used disk volumes, for example.

You'd probably want to look at the bug reports that I made, in order to decide
whether it might happen to you.
http://bugs.bacula.org/view.php?id=1188
(original mailing list thread):
http://www.nabble.com/Director-bug-when-using-two-storage-daemons--td20364806.ht
ml
http://bugs.bacula.org/view.php?id=1208

> and what's the version considered "safe" at the moment to use with concurrent
> backup jobs?

On the second bug report, Kern says that it is fixed in 2.4.4 and SVN (which
pretty much means bacula-3.0.0).



Further information about the nature of the fixes applied is here:

http://www.mail-archive.com/bacula-devel AT lists.sourceforge DOT 
net/msg04247.html


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