I had a volume group comprising of 2 x 1TB disks called mirrorvg

I had a single Logical Volume (mirrorlv) which used all available capacity (approx 1.82TB usable)

Because of some hardware problems I moved the disks to another system (same distribution)

When I interrogate the disks and LVM status it appears everything is as it was:

vgdisplay --- Volume group --- VG Name mirrorvg System ID
Format lvm2 Metadata Areas 2 Metadata Sequence No 2 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.82 TiB PE Size 4.00 MiB Total PE 476932 Alloc PE / Size 476932 / 1.82 TiB Free PE / Size 0 / 0
VG UUID Hfk5Vu-hAYY-dksV-y3nG-2rwM-sUMZ-PPWu05

lvdisplay --- Logical volume --- LV Path /dev/mirrorvg/mirrorlv LV Name mirrorlv VG Name mirrorvg LV UUID LwLAQ5-OT0X-3q1m-7vlh-TlKl-OsyT-Rupf90 LV Write Access read/write LV Creation host, time tvpc, 2015-09-11 16:24:07 +0100 LV Status NOT available LV Size 1.82 TiB Current LE 476932 Segments 2 Allocation inherit Read ahead sectors auto

But if I try and mount the LV I get an error

mount /dev/mirrorvg/mirrorlv /backup/ mount: special device /dev/mirrorvg/mirrorlv does not exist

What do I need to do to get access to my data again? As you may have gathered I'm not that experienced in LVM!


Did you notice the line LV Status NOT available in the output of lvdisplay?

Before you can access the volume group, you will need to activate the volume group using:

vgchange -a y

After the volume group is active you can mount the filesystem within the volume group.

| improve this answer | |
  • Thanks - that worked! My brain went into panic mode, I should have paid more attention.. – Aditya K Dec 4 '15 at 14:16

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