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kern/45648: Powering off unmounted SATA disk panics
>Synopsis: Powering off unmounted SATA disk panics
>Arrival-Date: Thu Nov 24 12:30:01 +0000 2011
>Originator: Hauke Fath
>Release: NetBSD 5.1_STABLE
System: NetBSD venediger 5.1_STABLE NetBSD 5.1_STABLE (VENEDIGER) #0: Wed Feb
23 21:05:10 CET 2011
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
Stopped in pid 0.33 (system) at netbsd:lapic_delay+0x42: movl
The above is from serial console - no stack trace, since the
machine had to be brought up asap.
Power off an unused (as in: not mounted) sata disk.
-- I don't know if it is that easy...
Something in the kernel appears to have hung on to the disk,
and something else appears to have considered the resulting
error 'fatal'. Both should not have happened.
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