Re: [BUG] 2.6.23-rc3 can't see sd partitions on Alpha

From: Andrew Morton
Date: Sun Nov 25 2007 - 01:40:40 EST

On Sat, 17 Nov 2007 23:20:36 -0600 (CST) rct@xxxxxxxxxxxxxxxx (Bob Tracy) wrote:

> Completely reproducible... 2.6.23-rc3 kernel boots, and normal messages
> are seen on console as far as disks found and partitions on each. However,
> once /dev is populated and the boottime scripts attempt to check filesystem
> status, no partitions on either of the two disks attached to the SCSI
> controller are seen. Dropping into a single-user root shell confirms
> the sudden "blindness": fdisk can't open /dev/sda.
> When I reboot on 2.6.24-rc2, everything works normally.
> System environment is Debian Etch. Both 2.6.24-rc2 and -rc3 were built
> from the respective unaltered source trees, using the same
> kernel configuration modulo saying "no" to CONFIG_SENSORS_I5K_AMB and
> CONFIG_PID_NS in -rc3. No problems with -rc3 on a x86 box.

Could be something change in sysfs. Please double-check the config
options, make sure that something important didn't get disabled.

Failing that, it would be great if you could bisect this down to the
offending commit. has help.

Richard, Ivan: have you seen anything like this?

Meanwhile, I guess we should track this as another post-2.6.23 regression

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