problems with RAID0 and Intel/SE7501WV2/Promise

[Danny Braniss]

> > 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.
> > 
> 
> I used sysinstall, and disklabel -e to change the partition letters.
> The problem appears after several hours of disk usage, and the only
> partition in use is h.
> 
whops, rereading the question, here is the correct answer, sorry.

I used the bios to define the raid0, stripe, 2 disks.
(the menu is 'fool-proof', so i guess i couldn't have made a mistook :-)

> 
> > > 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
> 
> 
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