[arch-general] HELP: dmraid-1.0.0rc15 in testing - Possible Bug: All Partitions are GONE??

[David C. Rankin]

On Wednesday 24 June 2009 12:28:42 am Tobias Powalowski wrote:
> Am Mittwoch 24 Juni 2009 schrieb David C. Rankin:
> > On Tuesday 23 June 2009 04:20:51 pm David C. Rankin wrote:
> > <big snip>
> >
> > > 	Now this is very scary looking. The sdb[5-8] and sdd[5-8] partitions are
> > > GONE?? (Bummer..) Obviously, I can no longer boot archlinux??
> >
> > Listmates,
> >
> > 	Is there a way I can boot from the install media and then downgrade the
> > kernel to 2.6.29 to see if that resolves my missing partition and "won't
> > boot" problem for my Arch install? If so, anybody got a link to a howto or
> > a short version of what I would need to do after booting from the install
> > media?
> 
> ftp://ftp.archlinux.org/iso/archboot
> those have 2.6.29 kernel and dmraid 1.0.0rc14 included,
> good luck
> greetings
> tpowa
> 


Tobias,

	I don't know whether I should throw in the towel and reinstall or attempt to recover the partitions by somehow recreating the device-mapper nodes somehow. I booted with archboot-2009.05-2 (dmraid-1.0.0rc14 and 2.6.29 kernel and there was no difference, all of the following were still GONE:

brw-------  1 root disk 254,  2 2009-06-22 01:40 nvidia_ecaejfdip5
brw-------  1 root disk 254,  3 2009-06-22 01:40 nvidia_ecaejfdip6
brw-------  1 root disk 254,  4 2009-06-22 01:40 nvidia_ecaejfdip7
brw-------  1 root disk 254,  5 2009-06-22 01:40 nvidia_ecaejfdip8

	The raid array is seen just fine:

brw-------  1 root disk 254,  0 2009-06-22 13:48 nvidia_ecaejfdi

	and the raid set is active:

[01:26 ecstasy:~] # dmraid -ay
RAID set "nvidia_ecaejfdi" already active
RAID set "nvidia_fdaacfde" already active

	but no partitions:

[01:34 ecstasy:~] # cat /proc/partitions
major minor  #blocks  name

   8     0  488386584 sda
   8     1          1 sda1
   8     5      72229 sda5
   8     6    2104483 sda6
   8     7   20972826 sda7
   8     8  465234336 sda8
   8    16  732574584 sdb
   8    32  488386584 sdc
   8    33          1 sdc1
   8    37      72229 sdc5
   8    38    2104483 sdc6
   8    39   20972826 sdc7
   8    40  465234336 sdc8
   8    48  732574584 sdd
 253     0  732574583 dm-0
 253     1  488386583 dm-1
 253     2  488384001 dm-2
 253     3      72229 dm-3
 253     4    2104483 dm-4
 253     5   20972826 dm-5
 253     6  465234336 dm-6
 253     7      72229 dm-7
 253     8    2104483 dm-8
 253     9   20972826 dm-9
 253    10  465234336 dm-10


	After whatever happened -- happened every one of the partitions is gone. I'm sure the data and boundaries are still there and intact, but I can't find a way to get to it and set it up. 

	What's the consensus, just scrap this Arch install and reinstall?

-- 
David C. Rankin, J.D.,P.E.
Rankin Law Firm, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
Telephone: (936) 715-9333
Facsimile: (936) 715-9339
www.rankinlawfirm.com