SUMMARY: V480 and Qlogic Loop offline/online question

Right now I am just keeping an eye on the system. I haven't seen any
more notices since that first night. Thanks for the help! -- Russ

And here are the responses I got...

Tim Chipman had this to say:
----------------------------

I've had loop-offline problems recently with our t3 (connected to a
qlogic HBA, single channel fibre, non-redundant config) which so far
have vanished since we cold-shutdown everything, unplugged all the bits,
and replugged everything, followed by clean boot and then a few hours of
SunVTS testing to be paranoid.

Some suggestions were to flash the HBA firmware ; to replace the HBA ;
and to maybe replace other components in the fibre loop if the problem
persisted.

additionally, a trawl through sunsolve found for me some hit maybe
relevant for you, todo with power-saving features spinning down internal
FCAL disks on some newer boxes such as v480 maybe (?).  Worth a look in
sunsolve if you haven't seen this yet...

And Mary Dell had this to say:
------------------------------

I have had exactly this behavior with a bad gbic - offline/online,
offline/online, sometimes for months.  I had it in an E3500 and there
was one particular kind of gbic that was very prone to this - I found a
lot of references online to a gbic from a company starting with a V I
think - vixel or something like that.  Anyway, I pulled the one gbic I
had that wasn't ibm and replaced it with an ibm and the problem went
away.  Keep in mind that usually you have to replace both gbis on that
fibre channel since there's usually not any way of telling which end of
the loop is bad - I just got "lucky" having a known-crappy part.





> -----Original Message-----
> From: sunmanagers-bounces@sunmanagers.org
> [mailto:sunmanagers-bounces@sunmanagers.org] On Behalf Of
> Lebar, Russell J
> Sent: Thursday, September 23, 2004 12:29
> To: sunmanagers@sunmanagers.org
> Subject: V480 and Qlogic Loop offline/online question
>
> We have a V480 that we started having drive problems on disk1
> (c1t1d0).
> SUN put a new backplane in the system and replaced disk1.
> Both disks are Seagate Cheetahs and of course there is the
> DVD drive. We only saw errors on disk1.
>
> I thought this took care of the problem but I noticed the
> following in the messages file:
>
> Sep 21 18:20:51 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop OFFLINE
> Sep 21 18:20:52 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop ONLINE
> Sep 21 18:20:56 nexus6 scsi: [ID 107833 kern.warning] WARNING:
> /pci@9,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50b8863e,0 (ssd1):
> Sep 21 18:20:56 nexus6  Unhandled Sense Key 'Vendor Unique'
> Sep 21 21:00:41 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop OFFLINE
> Sep 21 21:00:45 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop ONLINE
> Sep 21 21:44:26 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop OFFLINE
> Sep 21 21:44:26 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop ONLINE
> Sep 21 22:09:23 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop OFFLINE
> Sep 21 22:09:23 nexus6 qlc: [ID 686697 kern.info] NOTICE:
> Qlogic qlc(0):
> Loop ONLINE
>
>
> By 18:20 I was restoring the filesystem (/export) from tape.
> There was about 33GB of data and the restore finished around
> 21:30. It looks like Netbackup started doing backups on
> c1t1d0s0 around 20:07  (got to love that timing).
>
> Is there still a possible problem? I have heard of GBIC
> issues with SUN systems using fibre. Running: Solaris 9 4/04
> s9s_u6wos_08a SPARC Assembled 22 March 2004.
>
> Thanks in advance!
>
>
> --
> -------------------------
> Russ LeBar
> Enterprise Rent-A-Car
> UNIX System Administrator
> _______________________________________________
> sunmanagers mailing list
> sunmanagers@sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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