kern/140416: mfi driver stuck in timeout

[Stephane D'Alu]

>Number:         140416
>Category:       kern
>Synopsis:       mfi driver stuck in timeout
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 09 13:20:07 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Stephane D'Alu
>Release:        8.0-RC2
>Organization:
INSA Lyon
>Environment:
FreeBSD mil.citi.insa-lyon.fr 8.0-RC2 FreeBSD 8.0-RC2 #0: Thu Nov  5 17:29:05 CET 2009     root at mil.citi.insa-lyon.fr:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
Systeme is a 32Go memory, 2 cpus 4 cores 2 SMT threads

The computer is configured to use ZFS with disks attached to the mfi controller
when performing for example zfs scrub, the controller enter in timeout and doesn't leave this state:

mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 41 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 71 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 101 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 131 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 161 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 191 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 221 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 251 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 281 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 311 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 341 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 371 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 401 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 431 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 461 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 491 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 521 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 551 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 581 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 611 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 641 SECONDS
mfi0: COMMAND 0xffffff80009c4b90 TIMEOUT AFTER 671 SECONDS

I can perform further diagnostics on the systems, just tell me what command need to be run
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: