Extracting LVM metadata backups from a physical volume

You can extract LVM metadata from a wiped off LVM physical volume so that Red Hat support can recover the volume using the backups.

Prerequisites

• The lvm2 package is installed.

Procedure

1. Check the headers on the physical volume.

   # pvck --dump headers /dev/sda1
   

2. Search for volume group metadata that corresponds with the volume group you want to recover.

   # pvck --dump metadata_search -v /dev/sda1
   

3. Extract the instance of metadata you need for recovery and save it to a file.

   # pvck --dump metadata_search \
          --settings metadata_offset=yourinstance \
          -f file /dev/sda1 
   

Additional resources

• The pvck(8) man page.