[linux-lvm] vg not intact after other disks are exchanged

[Thomas Krichel <krichel@openlib.org>]

  hi LVM gurus!

  I have a Dell computer with a scsi (mounted as root), and
  four ide disks hda to hdd. I have hdb, hdc and hdd in a volume
  group vg1. hda is separate.
 
  I am running lvm2 2.01.04-5 from Debian testing.

  Trouble with the scsi disk let me to take it out and replace
  hda with a differnt physical disk that can act as root. After
  changing the boot sequence in the bios the machine boots up fine.
  I left the three other ide disks untouched. But, when
  I want to activate the vg, I have a problem

fasolt:~# pvscan
  Couldn't find device with uuid 'N0i9f3-0xqW-iPyq-7EG9-e4kI-Oa3F-jPfRpC'.
  Couldn't find device with uuid 'N0i9f3-0xqW-iPyq-7EG9-e4kI-Oa3F-jPfRpC'.
  PV /dev/hdc         VG vg1   lvm2 [186.30 GB / 0    free]
  PV unknown device   VG vg1   lvm2 [167.68 GB / 0    free]
  PV /dev/hdb1        VG vg1   lvm2 [372.61 GB / 0    free]
  Total: 3 [726.59 GB] / in use: 3 [726.59 GB] / in no VG: 0 [0   ]

  But hdd is still there, it is just not recogized as 
  part of vg1. 

fasolt:~# fdisk -l /dev/hdd

Disk /dev/hdd: 180.0 GB, 180045766656 bytes
255 heads, 63 sectors/track, 21889 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/hdd doesn't contain a valid partition table

  I exclude hda from scanning, 

fasolt:~# grep hda /etc/lvm/lvm.conf
    filter = [ "r|/dev/cdrom|" , "r|/dev/hda|" ]
    # filter = [ "a|^/dev/hda8$|", "r/.*/" ]

  therefore it is likely that hdd is the device
  N0i9f3-0xqW-iPyq-7EG9-e4kI-Oa3F-jPfRpC that could not be found.
 
  What do I do now? How do I add it again saying that this
  is the PV that is unknown?


  Cheers,

  Thomas Krichel                             mailto:krichel@openlib.org
                                        http://openlib.org/home/krichel
                                    RePEc:per:1965-06-05:thomas_krichel