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 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/