Re: [Bacula-users] Re: Concurrent Jobs

[Kern S. <ke...@si...>]

My regression script runs four concurrent jobs writing to the same
Volume, then does a restore, which succeeds.  Everything *should* work,
but I am *extremely* conservative as I don't want anyone to lose data
ever, so since it is not well tested in production, I put out a lot of
warnings.

Writing to separate Volumes is likely to have fewer problems because the
data blocks (64K each) will be interleaved creating a much more
complicated Volume structure. It all seems to work, and has for quite
some time, but I prefer to see users test, test, test (including
restore, restore, restore).  

The final piece I was waiting to complete was bscan, which until 1.32
(possibly 1.31) could not scan multiple simultaneous jobs.  It could
always scan a Volume containing multiple simultaneous jobs, one job at a
time. With version 1.32, it can scan any number of jobs at one time (it
has an separate I/O stream for each one).

Nothing this complicated rarely works without some subtle bug. So far no
one has reported one, so either it is waiting to strike, or I succeeded
in doing enough testing.

Regards,

Kern

On Tue, 2003-12-02 at 20:31, Karl Cunningham wrote:
> --On Tuesday, December 02, 2003 11:37 AM -0500 Dan Langille
> <da...@la...> wrote:
> 
> > On 2 Dec 2003 at 8:32, Karl Cunningham wrote:
> > 
> >> I have had up to 3 concurrent jobs running in the storage daemon (writing
> >> to separate files) on a trial basis and have found no problems.  The
> >> storage daemon is running on a differnt machine than the director.  Don't
> >> know if this matters.
> > 
> > Have you done any restores from such jobs?
> 
> Not yet.  That's the next step, but other thing have priority right now.
> I'll post to the list any results.
> 
> Karl
> 
> 
> 
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