[dm-devel] 2.6.2-udm2
Heinz Mauelshagen
mauelshagen at redhat.com
Wed Feb 18 09:06:01 UTC 2004
On Wed, Feb 18, 2004 at 01:09:06PM +0000, Joe Thornber wrote:
> On Wed, Feb 18, 2004 at 01:01:29PM +0100, Heinz Mauelshagen wrote:
> > We can and will need to mlockall() the path test tool, which will make sure
> > that we can access all pages of the tool, shared library or mmap'ed file it
> > needs.
>
> Yes, I think Christophe Varoqui who is writing the tools is aware of
> this.
>
> > But if *all* paths of the multipath target to test are failed
>
> Then we error the ios, we have no choice. The userland tester should
> not wait until this situation before testing.
Right, but it won't have a chance to test early enough worst case.
Eg, all phyiscal paths fail because of a short power outage to multiple switches
in a fabric, which come back online shortly later when all paths have been
failed by the multipath target.
>
> - Joe
>
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--
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
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Heinz Mauelshagen Red Hat, Inc.
Consulting Development Engineer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at RedHat.com +49 2626 141200
FAX 924446
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