problems with RAID0 and Intel/SE7501WV2/Promise

[Doug White]

On Fri, 2 Jul 2004, Danny Braniss wrote:

> Hi,
> 	the raid info keeps disappearing!, and im not convinced it's
> hardware. I've tried it on 2 different - but similar - boxes, after some
> time, kernel reports something like:
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad6: hard error writing fsbn 0 (ad6
> bn 0; cn 0 tn 0 sn 0) trying PIO mode

How did you construct the array volume?  This looks like one of the
offsets in the disklabel is wrong.

> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad4: hard error writing fsbn 0 (ad4
> bn 0; cn 0 tn 0 sn 0) trying PIO mode
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad6: hard error writing fsbn 0 (ad6
> bn 0; cn 0 tn 0 sn 0) status=51 error=10
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ad4: hard error writing fsbn 0 (ad4
> bn 0; cn 0 tn 0 sn 0) status=51 error=10
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken
> Jul  2 10:18:35 cs7.cs.huji.ac.il /kernel: ar0: ERROR - array broken
>
> from dmesg:
> ...
> FreeBSD 4.10-STABLE #7: Fri Jul  2 09:57:10 IDT 2004
> ...
> ar0: 381564MB <ATA RAID0 array> [48642/255/63] status: READY subdisks:
>  0 READY ad4: 190782MB <ST3200822A> [387621/16/63] at ata2-master UDMA100
>           1 READY ad6: 190782MB <ST3200822A> [387621/16/63] at ata3-master
> UDMA100
>
> i've partitioned the disk so:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a:  1024000        0    4.2BSD     2048 16384    90   # (Cyl.    0 - 63*)
>   b:  8388608  1024000      swap                        # (Cyl.   63*- 585*)
>   c: 781433667        0    unused        0     0        # (Cyl.    0 - 48641*)
>   d:  1024000  9412608    4.2BSD        0     0     0   # (Cyl.  585*- 649*)
>   h: 770997059 10436608    4.2BSD        0     0     0  # (Cyl.  649*- 48641*)
>
> the machine boots diskless, so just to check the disk i did a newfs -U to
> /dev/ar0s1a,
> then restored a root image unto it, no problems.
>
> the h partition has a big postgres data base, starting postgres i get the
> above error, notice that
> the error is a bit suspicious, fsbn 0 ( ... bn 0; cn 0; tn 0; sn 0)
>
> using the Fastrack/Promise Bios i reconfigure the Raid, and if tried the above
> again with
> the same results.
>
> btw, on a different host, same motherboard, same type of disks, with a older
> kernel,
> it panics, but the disk error is the same, and the array info is lost.
>
>
> Any more info/help needed to track this down?
>
> thanks,
> 	danny
>
>
>
>
>
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-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite at gumbysoft.com          |  www.FreeBSD.org