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My mirrored lvm array failed to mount on reboot. dmesg shows
device-mapper: ioctl: error adding target to table
lvdisplay shows
--- Logical volume ---
LV Path /dev/vol/fast
LV Name fast
VG Name vol
LV UUID b2Ty2h-xt2t-Djcs-lkgi-0iPB-4muX-Zm0SGr
LV Write Access read/write
LV Creation host, time archdell, 2016-08-13 00:27:39 -0500
LV Status NOT available
LV Size 2.95 TiB
Current LE 774620
Mirrored volumes 2
Segments 1
Allocation inherit
Read ahead sectors auto
The relevant bit being LV Status
vgdisplay shows
--- Volume group ---
VG Name vol
System ID
Format lvm2
Metadata Areas 5
Metadata Sequence No 68
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 5
Act PV 5
VG Size 6.37 TiB
PE Size 4.00 MiB
Total PE 1668736
Alloc PE / Size 1549242 / 5.91 TiB
Free PE / Size 119494 / 466.77 GiB
VG UUID TCZiTc-vAT9-48ty-tn0L-NaUG-Q0uq-K0PEOa
The extra space is not an error, my mirrored disks just aren't the same size. Max LV is set to 0. The volume does not show up in /dev at all. Attempting to activate the volume with
vgchange -ay vol
gives
device-mapper: reload ioctl on (254:4) failed: Invalid argument
0 logical volume(s) in volume group "vol" now active
During my googling to solve the issue I found https://bugs.launchpad.net/ubuntu/+sour … ug/1631298
After downgrading the kernel and rebooting the volume automatically mounts just fine.
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