problems with mptscsih / FC5

[Grant Ozolins]

Hi all,

We enountered an unusual condition with the LSI SCSI drivers last night 
- we got an "attempted task abort", followed by about 10 minutes of no 
messages (I wasn't logged in at the time but believe the system was 
unresponsive), followed by several minutes more of similar messages, 
repeated:

Nov 27 22:08:48 hostname kernel: mptscsih: ioc0: attempting task abort! 
(sc=ffff810078cb49c0)
Nov 27 22:08:48 hostname kernel: sd 0:0:0:0:
Nov 27 22:08:48 hostname kernel:         command: Read(10): 28 00 01 fb 
b7 4d 00 00 08 00
Nov 27 22:08:48 hostname kernel: mptbase: ioc0: IOCStatus(0x0048): SCSI 
Task Terminated
Nov 27 22:08:48 hostname kernel: mptscsih: ioc0: task abort: SUCCESS 
(sc=ffff810078cb49c0)
Nov 27 22:08:58 hostname kernel: mptscsih: ioc0: attempting task abort! 
(sc=ffff810078cb49c0)
Nov 27 22:08:58 hostname kernel: sd 0:0:0:0:
Nov 27 22:08:58 hostname kernel:         command: Test Unit Ready: 00 00 
00 00 00 00

and then...
Nov 27 22:19:38 hostname kernel: mptbase: ioc0: IOCStatus(0x0048): SCSI 
Task Terminated
Nov 27 22:19:40 hostname kernel: mptscsih: ioc0: task abort: SUCCESS 
(sc=ffff810078cb49c0)
Nov 27 22:19:41 hostname kernel: mptscsih: ioc0: attempting task abort! 
(sc=ffff81005b759e00)
Nov 27 22:19:42 hostname kernel: sd 0:0:0:0:
Nov 27 22:19:42 hostname kernel:         command: Read(10): 28 00 01 fb 
b7 fd 00 00 08 00
Nov 27 22:19:42 hostname kernel: mptbase: ioc0: IOCStatus(0x0048): SCSI 
Task Terminated
Nov 27 22:19:42 hostname kernel: mptscsih: ioc0: task abort: SUCCESS 
(sc=ffff81005b759e00)
Nov 27 22:19:42 hostname kernel: mptscsih: ioc0: attempting task abort! 
(sc=ffff81005b759e00)
Nov 27 22:19:42 hostname kernel: sd 0:0:0:0:
Nov 27 22:19:42 hostname kernel:         command: Test Unit Ready: 00 00 
00 00 00 00
Nov 27 22:19:43 hostname kernel: mptbase: ioc0: IOCStatus(0x0048): SCSI 
Task Terminated
Nov 27 22:19:43 hostname kernel: mptscsih: ioc0: task abort: SUCCESS 
(sc=ffff81005b759e00)
Nov 27 22:19:43 hostname kernel: mptscsih: ioc0: attempting task abort! 
(sc=ffff810091491e00)
Nov 27 22:19:43 hostname kernel: sd 0:0:0:0:
Nov 27 22:19:43 hostname kernel:         command: Read(10): 28 00 01 fb 
b8 75 00 00 08 00
Nov 27 22:19:43 hostname kernel: mptbase: ioc0: IOCStatus(0x0048): SCSI 
Task Terminated
Nov 27 22:19:43 hostname kernel: mptscsih: ioc0: task abort: SUCCESS 
(sc=ffff810091491e00)
(... etc)

This is on a dual opteron 1.8Ghz Tyan system, running a fairly minimal 
FC5 install.

The problem resolved itself after a little while, but the web server 
became unresponsive during this time - obviously it looks like some kind 
of loop in the LSI kernel module - has anyone seen anything like this 
before?  It looks like something to report to the linux-kernel or 
linux-scsi mailing lists, but as I'm using FC5 I thought I'd ask here first.

Thanks in advance,

-- 
Grant Ozolins <grant.ozolins at firebox.com>
Senior Web Developer
Firebox.com
+44 (0)20 8678 5581