kern/108924: Panics when Intel MatrixRAID RAID1 is degraded

[Claudio Ferronato]

The following reply was made to PR kern/108924; it has been noted by GNATS.

From: "Claudio Ferronato" <claiudio at libero.it>
To: "bug-followup" <bug-followup at FreeBSD.org>,
	"taras" <taras at elantech.ru>
Cc:  
Subject: Re: kern/108924: Panics when Intel MatrixRAID RAID1 is degraded
Date: Mon,  9 Apr 2007 01:56:47 +0200

 I have an ASUS p5b deluxe. In raid 5, with 4 identical disks, if I do
 # atacontrol detach ata8
 when freebsd is up and running, after 1-2 minutes, system can't access to=
  the disks. Is needed a reset, but at the boot, the system reboots, in lo=
 op.
 The only thing I can do is to boot from the installation CD, run a shell =
 and type this command
 # ln -sf /mnt2/usr/bin /usr/bin
 # ln -sf /mnt2/bin/dd /stand/dd
 then run atacontrol:
 atacontrol detach ata8
 atacontrol attach ata8
 atacontrol addspare ar0 ad16
 atacontrol rebuild ar0
 
 but output of # atacontrol status ar0 is always
 ar0: ATA RAID5 subdisks: ad10 ad12 ad14 ad16 status: REBUILDING 0% comple=
 ted
 
 Also if I make a RAID 1, rebuilding don't start.
 Motherboard: Asus p5b deluxe
 disks (from dmesg):
 ad10: 381554MB <WDC WD4000KS-00MNB0 07.02E07> at ata5-master SATA300
 ad12: 381554MB <WDC WD4000KS-00MNB0 07.02E07> at ata6-master SATA300
 ad14: 381554MB <WDC WD4000KS-00MNB0 07.02E07> at ata7-master SATA300
 ad16: 381554MB <WDC WD4000KS-00MNB0 07.02E07> at ata8-master SATA300
 ar0: 1144655MB <Intel MatrixRAID RAID5 (stripe 64 KB)> status: READY
 
 OS: FreeBSD 6.2 Release=0A=0A=0A-----------------------------------------=
 -------------=0APassa a Infostrada. ADSL e Telefono senza limiti e senza =
 canone Telecom=0Ahttp://click.libero.it/infostrada=0A