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[linux-lvm] lvm metadata



hi! i am truly desperate! i messed up my metadata and pvdisplay,
vgdisplay and lvdisplay outputs nothing. all my disks are still
functional and present. i keep getting the error message:

# vgcfgrestore -f main_disk_group_mod3 main_disk_group
 Cannot change metadata for partial volume group main_disk_group
 Restore failed.

i found almost no information about this error message on the web. i
have one backup-file that i am pretty sure is the one i want to backup
(see attachment). it seems /dev/sda's uuid has changed and that is why
i modified it to have the right uuid (hence the "vgcfgrestore -f
main_disk_group_mod3")

lvmdiskscan outputs the following:
  /dev/ram0      [       64.00 MB]
  /dev/sda       [      465.76 GB] LVM physical volume
  /dev/evms/hda1 [        8.99 GB]
  /dev/ram1      [       64.00 MB]
  /dev/hda1      [        8.99 GB]
  /dev/hdc1      [      232.88 GB] LVM physical volume
  /dev/evms/hda5 [      431.40 MB]
  /dev/ram2      [       64.00 MB]
  /dev/evms/hdb1 [      149.05 GB] LVM physical volume
  /dev/ram3      [       64.00 MB]
  /dev/evms/hdc1 [      232.88 GB] LVM physical volume
  /dev/ram4      [       64.00 MB]
  /dev/evms/hdd1 [      186.31 GB]
  /dev/ram5      [       64.00 MB]
  /dev/hda5      [      431.40 MB]
  /dev/ram6      [       64.00 MB]
  /dev/ram7      [       64.00 MB]
  /dev/ram8      [       64.00 MB]
  /dev/ram9      [       64.00 MB]
  /dev/ram10     [       64.00 MB]
  /dev/ram11     [       64.00 MB]
  /dev/ram12     [       64.00 MB]
  /dev/ram13     [       64.00 MB]
  /dev/ram14     [       64.00 MB]
  /dev/ram15     [       64.00 MB]
  /dev/sdb       [      465.76 GB] LVM physical volume
  /dev/hdb1      [      149.05 GB]
  /dev/hdd1      [      186.31 GB]
  0 disks
  23 partitions
  2 LVM physical volume whole disks
  3 LVM physical volumes

disk overview:
/dev/sdb	14AP4R-X75R-94Dx-Pk5g-HU0e-F6yh-8tQoEz	500gig	
(somehow changed to mQYVpB-CCAn-OdlL-Ows5-m33h-gCMy-DWS8ku)
/dev/hdb	kUgW4k-AO0G-qRS0-0cH8-VkzD-Xjfj-ZjzZVL	150gig
/dev/hdc1	JDMxOF-84VA-Ir6e-tAeB-LAKj-gy4J-7GXspF	250gig
/dev/sda	F87gox-1Z8e-eDcZ-QUxW-9gLI-XJLp-ySl017	500gig


Pål Driveklepp
Norway

>  But the error probably means you're attempting to use an incomplete backup
>  (or you attempted hand-editing it incorrectly).
>
>  Alasdair

Attachment: main_disk_group_00001.vg
Description: Binary data


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