kern/91914: Disk System Crashes - Raid Disk

[Carey]

>Number:         91914
>Category:       kern
>Synopsis:       Disk System Crashes - Raid Disk
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 17 18:10:04 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Carey
>Release:        6.0
>Organization:
>Environment:
user at datasilo$ uname -a
FreeBSD datasilo.maple 6.0-RELEASE-p1 FreeBSD 6.0-RELEASE-p1 #2: Mon Jan  2 10:22:47 UTC 2006     user at datasilo.maple:/usr/obj/usr/src/sys/DATASILO  i386
user at datasilo$

>Description:
File serving disk fails every few days - only occurs on the SATA Raid disk.

Jan 17 12:56:16 datasilo kernel: ar0: WARNING - mirror protection lost. RAID1 array in DEGRADED mode
Jan 17 12:56:56 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 12:57:36 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 12:59:36 datasilo last message repeated 3 times
Jan 17 12:59:49 datasilo dhcpd: Unable to add forward map from laptop.maple to 192.168.0.58: timed out
Jan 17 13:00:16 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 13:00:56 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 13:02:56 datasilo last message repeated 3 times
Jan 17 13:12:56 datasilo last message repeated 15 times
Jan 17 13:22:56 datasilo last message repeated 15 times
Jan 17 13:32:56 datasilo last message repeated 15 times
Jan 17 13:42:56 datasilo last message repeated 15 times
Jan 17 13:52:56 datasilo last message repeated 15 times
Jan 17 14:02:56 datasilo last message repeated 15 times
Jan 17 14:12:56 datasilo last message repeated 15 times
Jan 17 14:22:56 datasilo last message repeated 15 times
Jan 17 14:32:56 datasilo last message repeated 15 times
Jan 17 14:42:56 datasilo last message repeated 15 times
Jan 17 14:52:56 datasilo last message repeated 15 times
Jan 17 15:02:56 datasilo last message repeated 15 times
Jan 17 15:12:56 datasilo last message repeated 15 times
Jan 17 15:22:56 datasilo last message repeated 15 times
Jan 17 15:32:56 datasilo last message repeated 15 times
Jan 17 15:42:55 datasilo last message repeated 15 times
Jan 17 15:52:55 datasilo last message repeated 15 times
Jan 17 16:02:55 datasilo last message repeated 15 times
Jan 17 16:03:35 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 16:03:39 datasilo dhcpd: Unable to add forward map from laptop.maple to 192.168.0.58: timed out
Jan 17 16:04:15 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
Jan 17 16:04:55 datasilo kernel: ad4: req=0xc1b8e000 WRITE_DMA semaphore timeout !! DANGER Will Robinson !!
     
>How-To-Repeat:
Leave the system running without the overnight reboot
>Fix:
              
>Release-Note:
>Audit-Trail:
>Unformatted: