Re: [zfs-discuss] ZFS and powerpath

[Brian Wilson]

On Jul 13, 2007, at 1:15 PM, Alderman, Sean wrote:

I wonder what kind of card Peter's using and if there is a potential

also wonder if Peter were able to allocate an additional LUN to his
system whether or not he'd be able to create a pool on that new LUN.

I'm not sure why exactly they were chosen over the qlogic, some of our
admins swear by the qlogic cards, others have have had bad experiences
with the qlogic cards not allowing for persistent binding on some

hearsay.


--
Sean M. Alderman
513.204.2704

-----Original Message-----
From: Brian Wilson [mailto:[EMAIL PROTECTED]
Sent: Friday, July 13, 2007 1:58 PM
To: Alderman, Sean
Cc: Peter Tribble; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] ZFS and powerpath


and Clariion back ends.
PowerPath Version is 4.5.0, running on leadville qlogic drivers.
Sparc hardware.  (if it matters)

I ran one our test databases on ZFS on the DMX via PowerPath for a
couple months until we switched off of it because of the 'bogus memory

processing and retention that uses the Clariion as a back end.

cheers,
Brian


On Jul 13, 2007, at 11:08 AM, Alderman, Sean wrote:

linkage there. We've got the Sun branded Emulux cards in our sparcs. I configurations, but from my perspective being mostly a SAN noob it's all Hmm. Odd. I've got PowerPath working fine with ZFS with both Symmetrix usage' statistics problem. We still use it on a server we use for logs

There was a Sun Forums post that I referenced in that other thread
that mentioned something about mpxio working but powerpath not
working.  Of course I don't know how valid those statements are/were,
and I don't recall much detail given.


--
Sean

-----Original Message-----
From: Peter Tribble [mailto:[EMAIL PROTECTED]
Sent: Friday, July 13, 2007 11:53 AM
To: Alderman, Sean
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] ZFS and powerpath

On 7/13/07, Alderman, Sean <[EMAIL PROTECTED]> wrote:

You wouldn't happen to be running this on a SPARC would you?

That I would.

I started a thread last week regarding CLARiiON+ZFS+SPARC = core dump

when creating a zpool.  I filed a bug report, though it doesn't
appear

to be in the database (not sure if that means it was rejected or I
didn't submit it correctly).

I'm not seeing it quite like that. ZFS+mpxio works, ZFS+powerpath
seems to have "issues".

Also, I was using the powerpath psuedo device not the WWN though.

I've not got that far. During an import, ZFS just pokes around - there

doesn't seem to be an explicit way to tell it which particular devices

or SAN paths to use.

Just a couple thoughts.
Brian

Brian Wilson, Sun SE, UW-Madison DoIT
Room 3162 CS&S           608-263-8047
bfwilson(a)doit.wisc.edu
'I try to save a life a day. Usually it's my own.' - John Crichton

Hmmmmm. How many devices/LUNS can the server see? I don't know how import finds the pools on the disk, but it sounds like it's not happy somehow. Is there any possibility it's seeing a Clariion mirror copy of the disks in the pool as well? ------------------------------------------------------------------------ ----------- ------------------------------------------------------------------------ -----------

--
-Peter Tribble
http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/
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