Re: pata_pdc202xx_old regression?

From: Robert Hancock
Date: Sat Jan 02 2010 - 21:58:40 EST


On 01/02/2010 08:10 PM, David A. Sinck wrote:


SMTP quoth Robert Hancock on 1/2/2010 15:15 as having spake thusly:

On 01/02/2010 02:21 PM, David A Sinck wrote:

Greetings& Happy New Year!

I believe I've come across one of two things:

a) a regression in pata_pdc202xx_old
b) a clueless end user wrt the list :-)

The short version: running Ubuntu's Jaunty release (2.6.28-17-generic
#58-Ubuntu i686) I can cleanly access the disks hanging off of an
onboard Promise 20265; attempting to upgrade to Ubuntu Karmic
(presumptively 2.6.31.16.29) has numerious problems reading these same
drives, including:

e2label: No such file or directory while trying to open /dev/sda1
Couldn't find a valid filesystem superblock.

I've documented as much as I can think of that's relevant here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/489685

I'm willing to run tests + update the bug with further information
... if I knew what would be useful.

It might even be solved upstream from the release Karmic's using?

That dmesg output is from the working setup, correct? Can you get any
output from the non-working one?

I've uploaded /var/log/ { kern.log | syslog | dmesg } from a running
Karmic live cd (post release); I snapshotted the whole directory but
limited myself to those files figuring they'd be most likely to be the
helpful ones.

Let me know what else I can do; thanks for the timely response!

Well, it looks like all the drives got detected OK. I'm not sure what the device-mapper errors are though, and I'm not sure why you wouldn't be getting any device nodes showing up for them.. CCing linux-kernel.

Jan 3 01:43:51 ubuntu kernel: [ 4.978003] device-mapper: table: 252:0: zero-length target
Jan 3 01:43:51 ubuntu kernel: [ 4.978009] device-mapper: ioctl: error adding target to table
Jan 3 01:43:51 ubuntu kernel: [ 4.996613] device-mapper: table: 252:0: zero-length target
Jan 3 01:43:51 ubuntu kernel: [ 4.996620] device-mapper: ioctl: error adding target to table
Jan 3 01:43:51 ubuntu kernel: [ 5.372214] device-mapper: table: 252:0: zero-length target
Jan 3 01:43:51 ubuntu kernel: [ 5.372221] device-mapper: ioctl: error adding target to table
Jan 3 01:43:51 ubuntu kernel: [ 5.680349] device-mapper: table: 252:0: zero-length target


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