John,

On Saturday 25 August 2007 08:02:08 pm John Drescher wrote:
> > > Where the sleep 15 is uncomment this and make it sleep 60
> >
> > You mean - under the "load" case?
>
> Yes.
>
> > What makes you think it would work better?
>
> Because before you had this you got an error that was most likely
> caused by bacula trying to use the drive before it had finished
> loading the tape. The changer loaded the tape to the drive but the
> drive had not finished with its tape loading process.
>
> > Should I comment out wait_for_drive back? I tried both methods and they
> > both seem to work...
>
> Hmm. Did your script originally have both commented out? Mine had the
> wait_for_drive part uncomented and I know I did not edit that file for
> my changer. Well if you can guarantee that wait_for_drive works
> reliably 100% of the time (this can fail on some os/version/ tape
> drives) I would say that you can get away without the sleep. One thing
> to mention, I know my tape drives always take  30 seconds to 1 minute
> to load the tape so a sleep in that range will not slow down  the
> backup by much but it will make the chance of failure in this way
> lower.

Good news is, even without further changes to mtx-changer script, my large 
test backup spanning 3 volumes (about 0.6TB of data in total) did not 
generate any MTWEOF errors with version 2.2.0 anymore. Bad news, I am now 
getting SQL errors, presumably at the point when spooled attributes attempt 
to despool to database. Since this is apparently unconnected issue, I will 
post separetely. Please, see my other post.

Thanks,
Ivan

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