Help with queue backup

[Kevin Spicer]

On Sat, 2004-05-01 at 11:40, Peter Bonivart wrote:
> Kevin Spicer wrote:
> > My understanding is that mqueue.in and mqueue should be on the same
> > partition, because then to move files between directories all
> > MailScanner needs to do is a link/unlink action.  By splitting the
> > spools onto different partitions MailScanner needs to actually copy the
> > files, adding read and write overhead.
>
> Yes, you're right but in this case he's overloading one disk and needs
> to transfer some I/O off of it. I think it's well worth a test, he only
> needs to create a mqueue.in directory on one of those partitions and
> change one line in MailScanner.conf and his Sendmail start script to
> test it.
Another idea (although more involved to do, as it involves some
shuffling) is to create a striped metadevice accross two partitions on
different disks (and ideally different controllers), and use that for
the /var/spool partition.  That would give the benefit of spreading the
load, without the extra IO from MailScanner caused by splitting the
spool directory.




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