I had to reinstall my linux operating system with an existing LVM over RAID. During the install I formatted one of the physical volumes PV. I used it for / (root), swap and /boot partitions. I could have used the existing Logical Volume LV for these but this device is also encrypted. I doubt I can reuse it without unlocking it. So I simply wiped it clean and made a clean install. After reboot I checked the status of the LVM and the RAID. Both are okay-ish. The RAID is clean according to mdadm. LVM informed me that the volume group is degraded. I'm missing a physical volume. I know I wiped it clean.
So how do I restore the volume group so I can get at my data. --
Check out my blog.
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