[dm-devel] Multipath on STK OPENStorage D240

[Guido Guenther]

On Thu, May 04, 2006 at 04:55:44PM +0200, Guido Guenther wrote:
> On Thu, May 04, 2006 at 03:37:53PM +0200, Guido Guenther wrote:
> > On Thu, May 04, 2006 at 08:35:23AM -0400, Philip R. Auld wrote:
> > > Hi,
> > > 
> > > Rumor has it that on Thu, May 04, 2006 at 09:41:20AM +0200 Guido Guenther said:
> > > > Hi,
> > > > when using path_checker readsector0 on the above machine the box stalls
> > > > every 5 seconds when checking the currently nonactive path. Same for
> > > > path_checker tur. Is there a way to avoid this? I'd consider writing a
> > > > specific checker but am lacking any documentation.
> > > 
> > > This thing is a preferred path array. I can see how readsector0
> > > is probably the wrong choice of checker. I imagine it causes 
> > > a cache flush from the preferred controller. Odd that the tur
> > > checker has the same behavior. If you want to code something 
> > Well, can I check which check is really being used, if not I'll hack
> > that into the daemon next week? I noticed that typos in multipath.conf
> > are being silently ignored. 
> ...replying to myself: using "path_checker tur" in the defaults section
> of multipath.conf indeed _does_ seem to work. I've put it to the
> individual paths before (as shown in several example configs) but this
> seems to be silently ignored. I'll try to find some time to dig into
> this next week.
...monologue mode off: it should have been in the device section from
the very beginning, not in the multipath section. Silly me - works fine
now. Simple user error.
Cheers and sorry for the noise,
 -- Guido