Encrypted LVM shutdown

Question

So I have two hard drives. The actual drives have been encrypted with TrueCrypt, and then the virtual encrypted devices have been combined into a volume group using LVM. Now TrueCrypt does not automatically mount my drives on startup (because it needs my password), so what happens if my server needs to be restarted? Should I just be able to mount the TrueCrypt volumes from command line and LVM will go on its happy way, or will I lose all my data because LVM will think all my drives have disappeared.

score 1 · Answer 1 · answered Jul 01 '11 at 17:48

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If that is the case you can try the vgimport command to search for volume groups on your drives.

answered Jul 01 '11 at 17:48

Boogy

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score 0 · Answer 2 · answered Mar 26 '11 at 22:22

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LVM data is actually stored on disk (In the encrypted TrueCrypt volume in this case), you might need to execute some commands that make the server pick-up the LVM again after mounting the TrueCrypt disks, but I'm not 100% sure about that.

answered Mar 26 '11 at 22:22

Not Available

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score 0 · Accepted Answer · answered Aug 14 '12 at 18:06

So I found out the answer to this a while ago but forgot to update here. To re-recognize LVM devices if they do not exist on startup, run the following commands:

Scan for devices: pvscan
Re-activate Volume Group: vgchange -a y
Re-activate Logical: lvchange -a y <your VG here>

Then everything should be good.

Encrypted LVM shutdown

3 Answers3