Dustin,
On Wed, May 05, 2010 at 02:09:40PM -0500, Dustin J. Mitchell wrote:
> On Wed, May 5, 2010 at 1:38 PM, Brian Cuttler <[email protected]> wrote:
> > Also, the issues seem to be specific to certain DLE, in both
> > cases the busiest of the DLEs, not necessarily the largest
> > but the most active.
>
> It's clearly timing-related, then. Keep in mind that hte dtimeout is
> a timeout without *any* data, so I suspect that this is some kind of
> ugly interaction between ZFS busily doing copy-on-write to implement
> its snapshot while trying to feed data to the syscall-hungry gnutar.
I was thinking along those lines, just in a much less sophisticated
mannor. When I spoke Dan at my site about this he recalled that the
Orcale manager set some kind of resource controls on oracle on one
machine a couple of years back.
If so that may resolve the current problem on one of my machines.
The other machine doesn't run oracle, so those switches, even if
they work will be just plain unavailable. We'll have to find a
ZFS based solution or perhaps find a way to subdivide the DLE and
create multiple mount points.
Dan - I do mean mount points and not multiple DLEs by using
include/excludes like we did on systems with large DLE but
relatively small tapes.
Dan - you received the new storage unit for cascade, I don't
think we implemented the new storage yet, separate pools for
amanda-work and the zpool under amanda control has to be a
step in the right direction.
thanks,
Brian
---
Brian R Cuttler [email protected]
Computer Systems Support (v) 518 486-1697
Wadsworth Center (f) 518 473-6384
NYS Department of Health Help Desk 518 473-0773
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