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SubjectRe: rc5 seemed to kill a disk that rc4-mm1 likes. Also some X trouble.
Helge Hafting <helgehaf@aitel.hist.no> wrote:
>
> 2.6.13-rc5 seemed to kill a scsi disk (sdb) for me, where 2.6.13-rc4-mm1
> have no problems with the same disk.
>
> Machine: opteron running a x86-64 kernel, with built-in SATA as well as
> a symbios scsi controller. Two videocards running independent xservers.
> The sdb disk is on the symbios controller.
>
>
> Using 2.6.13-rc5 I suddenly got this in my logs:
>
> Aug 3 22:06:00 tenkende-august -- MARK --
> Aug 3 22:17:15 tenkende-august kernel: sd 0:0:0:0: ABORT operation started.
> Aug 3 22:17:15 tenkende-august kernel: sd 0:0:0:0: ABORT operation timed-out.
>
> ...
> This "no additiomnal sense" then repeats for many screenfulls.
> Two sdb partitions got dropped from RAID-1 as they failed, the
> md devices got remoutned read-only.
>
> I thought the disk had died - it was my oldest so it'd be reasonable.
> Rebooting 2.6.13-rc5 did not bring the disk back - it came up useless again.
>
> I switched back to 2.6.13-rc4-mm1 at this point for another reason,
> my X display aquired a nasty tendency to go blank for no reason during work,
> something I could fix by changing resolution baqck and forth. X also tended to get
> stuck for a minute now and then - a problem I haven't seen since early 2.6.
>
> These troubles disappeared by going back to 2.6.13-rc4-mm1. Even more interesting,
> the sdb disk seems fine again. There were no errors as I copied
> all data to another disk, and no errors when I ran a badblocks write-test
> (the nondestructive write test) on it.
>
> The two kernels have some config differences. The 2.6.13-rc5 kernel
> has ACPI+CPUFREQ configured, that the 2.6.13-rc4-mm1 doesn't have.

That's a pretty big difference ;)

> ...
> I can run more tests, but don't know what would be the most interesting.
> rc5 without powermanagement? rc4-mm1 with it? Or the newest git kernel?
> Or is this the effect of some known problem?

The latest -git kernel (or 2.6.13-rc6 if it's there) with APCI enabled is
the one to test, please.

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