freebsd stable - Jun 2004 - dscheck(#ar/2): negative b_blkno error on FreeBSD-4.10-STABLE

Hello,

Today's /var/log/messages and /var/log/dmesg.today got filled with:

dmesg.today:
dscheck(#ar/2): negative b_blkno -1721888480

messages:
/kernel: dscheck(#ar/2): negative b_blkno -1721888480

System configuration is the following:

FreeBSD-4.10-STABLE
CPU: Intel P3
MB: Asus P3B-F
ATA channels:
ATA-0 (MB): IBM DPTA-372050 as PM
ATA-1 (MB): HP CDRW 8200+ as PM
ATA-2 and -3 (RAID): Promise FastTrack TX2000 with four 80 GB WDC 
WD800JB in 1+0 configuration

I have checked status of array and drives with atacontrol but everything 
appears normal and I definitely can access all file systems.

Does anyone know what is the reason for such error and whether it is 
critical?

Thank you.

Vlad.

On Sun, 27 Jun 2004, Vladimir Zhurov wrote:
> Hello,
>
> Today's /var/log/messages and /var/log/dmesg.today got filled with:
>
> dmesg.today:
> dscheck(#ar/2): negative b_blkno -1721888480
>
> messages:
> /kernel: dscheck(#ar/2): negative b_blkno -1721888480
I've seen this if the array or partition table is corrupted. The check is
at the front of dscheck() in src/sys/kern/subr_diskslice.c.  You might
make sure your raid array is functioning normally and the fdisk table
hasn't been spammed.
> Does anyone know what is the reason for such error and whether it is
> critical?
It shouldn't happen -- you might go exploring with fdisk(8).

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org