Help with QLogic FC problem diagnosis (da0:isp0:0:0:0): lost device

[Eduardo Meyer]

Hello gentlemen,

I have a QLogic FC card in a FreeBSD, connected to a CX300 storage
which sometimes looses connection with no aparent reason. If someone
had lived a similar problem or know of something that would help
diagnose the cause, I would like to hear.

When the problem happens all I get in the logs is:

Feb  5 01:01:37 mailsrvr kernel: isp0: Name Server Database Changed
Feb  5 01:01:37 mailsrvr kernel: isp0: Firmware State <Config Wait->Ready>
Feb  5 01:01:37 mailsrvr kernel: isp0: Target 126 (Loop 0x7e) Port ID
0xfffffe (role (none)) Arrived
Feb  5 01:01:37 mailsrvr kernel: Port WWN 0x200500051e034ad8
Feb  5 01:01:37 mailsrvr kernel: Node WWN 0x100000051e034ad8
Feb  5 01:01:37 mailsrvr kernel: isp0: 2Gb link speed/s
Feb  5 01:01:37 mailsrvr kernel: isp0: Loop ID 255, Port ID 0x10500,
Loop State 0x2, Topology 'F Port'
Feb  5 01:01:37 mailsrvr kernel: isp0: Target 255 (Loop 0xff) Port ID
0x10500 (role Initiator) Arrived
Feb  5 01:01:37 mailsrvr kernel: Port WWN 0x210000e08b925d0e
Feb  5 01:01:37 mailsrvr kernel: isp0: Name Server Database Changed
Feb  5 01:01:37 mailsrvr kernel: isp0: Firmware State <Config Wait->Ready>
Feb  5 01:01:37 mailsrvr kernel: isp0: Target 126 (Loop 0x7e) Port ID
0xfffffe (role (none)) Arrived
Feb  5 01:01:37 mailsrvr kernel: Port WWN 0x200500051e034ad8
Feb  5 01:01:37 mailsrvr kernel: Node WWN 0x100000051e034ad8
Feb  5 01:01:37 mailsrvr kernel: isp0: 2Gb link speed/s
Feb  5 01:01:37 mailsrvr kernel: isp0: Loop ID 255, Port ID 0x10500,
Loop State 0x2, Topology 'F Port'
Feb  5 01:01:37 mailsrvr kernel: isp0: Target 255 (Loop 0xff) Port ID
0x10500 (role Initiator) Arrived
Feb  5 01:01:37 mailsrvr kernel: Port WWN 0x210000e08b925d0e
Feb  5 01:01:37 mailsrvr kernel: Node WWN 0x200000e08b925d0e
Feb  5 01:01:37 mailsrvr kernel: isp0:   Fabric Device @ PortID 0x10400
Feb  5 01:01:37 mailsrvr kernel: isp0:   Fabric Device @ PortID 0x10500
Feb  5 01:01:37 mailsrvr kernel: isp0: Target 0 (Loop 0x1) Port ID
0x10000 (role Target) Departed
Feb  5 01:01:37 mailsrvr kernel: Port WWN 0x500601603022db3d
Feb  5 01:01:37 mailsrvr kernel: Node WWN 0x50060160b022db3d
Feb  5 01:01:37 mailsrvr kernel: (da0:isp0:0:0:0): lost device
Feb  5 01:01:37 mailsrvr kernel: isp0: Retained login of Target 1
(Loop ID 0x2) Port 0x10400

and later, FreeBSD freezes (sometimes it panics).

It is not very often that it happens, and it is under completly random
circunstances (sometimes high load, sometimes the lowest load, on
different hours, etc).


-- 
===========
Eduardo Meyer
pessoal: dudu.meyer at gmail.com
profissional: ddm.farmaciap at saude.gov.br