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Re: kern/45648: Powering off unmounted SATA disk panics
The following reply was made to PR kern/45648; it has been noted by GNATS.
From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
Subject: Re: kern/45648: Powering off unmounted SATA disk panics
Date: Thu, 24 Nov 2011 18:11:49 +0100
On Thu, Nov 24, 2011 at 12:30:01PM +0000, Hauke Fath wrote:
> System: NetBSD venediger 5.1_STABLE NetBSD 5.1_STABLE (VENEDIGER) #0: Wed
> Feb 23 21:05:10 CET 2011
> Architecture: i386
> Machine: i386
> A sata disk, powered up and connected to the machine, but not
> mounted (might not have been mounted ever, but since the
> machine had been up 150+ d, it is hard to tell) was powered
> off. A few hours later, the machine panicked with
> piixide0:1:1: recal drive fault
> wd0d: device fault reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
> NMI ... going to debugger
NMI, this is bad. It's usually caused by hardware problems.
> Something in the kernel appears to have hung on to the disk,
possibly one of the daily task, trying to read the partition table.
After a few errors, the controller would be reset, powering up the
> and something else appears to have considered the resulting
> error 'fatal'. Both should not have happened.
The hardware considered it fatal, as it posted an NMI.
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
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