[linux-lvm] Problem with UUID on PVs

[Jiri Bartosik]

Hi,
I have really big problem with 2 VGs / 2 PVs on my linux box. After
reinstalling my gentoo linux, vgscan fails on this error message:

vgscan
  Reading all physical volumes.  This may take a while...
  Couldn't find device with uuid 'ZpitfR-Kwsh-8YJH-6RLS-tDZL-Tlhg-xcM99S'.
  Couldn't find all physical volumes for volume group vg_XXX2.
  Couldn't find device with uuid 'ZpitfR-Kwsh-8YJH-6RLS-tDZL-Tlhg-xcM99S'.
  Couldn't find all physical volumes for volume group vg_XXX2.
  Volume group "vg_XXX2" not found
  Found volume group "vg_XXX3" using metadata type lvm2
  Couldn't find device with uuid 'bMo1Vl-PZyi-E41g-q22v-n2hF-Jzdr-LsAfmw'.
  Couldn't find all physical volumes for volume group vg_XXX.
  Couldn't find device with uuid 'bMo1Vl-PZyi-E41g-q22v-n2hF-Jzdr-LsAfmw'.
  Couldn't find all physical volumes for volume group vg_XXX.
  Volume group "vg_XXX" not found

But, before reinstalling everything was working fine from setup of
PVs/VGs/LVs. I didn't move disks on controllers during instalation of new
OS. And I also have backup of lvm.conf and backup directory from lvm dir in
/etc, so I'm really sure which hdd should have which UUID. But it seems some
HDDs don't have UUIDs or have them corrupted... From backup dir:

vg_XXX2:
	pv2 {
                        id = "ZpitfR-Kwsh-8YJH-6RLS-tDZL-Tlhg-xcM99S"
                        device = "/dev/hdk"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 384
                        pe_count = 5961 # 186.281 Gigabytes
                }


vg_XXX:
           pv2 {
                        id = "bMo1Vl-PZyi-E41g-q22v-n2hF-Jzdr-LsAfmw"
                        device = "/dev/hde"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 384
                        pe_count = 3663 # 114.469 Gigabytes
                }

Is there any way to fix UUID on PV with maintaining data od that PVs? I
tried uuid_fixer, I looked for some guide, but both didn't work.

I'm running:
Gentoo linux
kernel - 2.6.11-gentoo-r4
lvm/raid/dm included in kernel
lvm2-2.00.33-r1 installed
reiserfsprogs-3.6.19

Sincerely
Jiri Bartosik