[OpenIndiana-discuss] COMSTAR qlt dropping link and resetting

[Mike La Spina]

Hi Adrian,

What logs have you checked.

The SanBoxes?
Dmesg?
Stmf service?

Are you running snapshots? 
Dedup? 
Compression?

IRQ sharing?
echo ::interrupts | mdb -k
-----Original Message-----
From: Adrian Carpenter [mailto:tac12 at wbic.cam.ac.uk] 
Sent: Friday, May 18, 2012 3:26 AM
To: openindiana-discuss at openindiana.org
Subject: [OpenIndiana-discuss] COMSTAR qlt dropping link and resetting

We are  using one port of each of  a pair of Qlogic 2562 cards to act as
a FC target for our Xen environment, we are running oi_151a4.  The other
port on each card is used as an initiator to attach to some FC
storage(Nexsan).  We use two Qlogic SanBoxes configured so that the Xen
hypervisors have a redundant path to the FC target which provides a
Storage Repository from a ZVOL.  Everything works really well as
expected with good throughput,  but randomly once every couple of days
simultaneously  BOTH  FC targets on the Openindiana box reset their FC
connections -  this of course causes real problem in Xen environment and
is not help by having redundant multipaths.

We are at a bit of a loss,  does anyone have any suggestions?

Adrian



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