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Re: [dm-devel] Volume group / volumes not activated at boot

On 10/24/2013 05:32 AM, Zdenek Kabelac wrote:
IMHO in normal case distro should ensure that only devices needed for the
system are activated on the boot.

So if you need all your volumes from a VG active - just add somewhere in
boot sequence    'vgchange -ay' if you need all LVs active.

There is also recently a support for 'autoactivated' LVs - but this
needs lvmetad daemon running in your system.


Thanks for the response.

Actually after some additional research last night, I was able to figure out what the problem is:

The single PV in vg2 is a full disk device (/dev/sdc), not a partition. However, when I first was initializing the drive to add in to LVM, I accidentally partitioned the drive first. Realizing the mistake, I then deleted the partitions. However the result was a drive with an empty partition table, instead of a drive with no partition table. So what must be happening is that when LVM scans the drive, it sees that it's partitioned, but sees no partitions, and then moves on, leaving the VG inactive. When I later manually tell LVM to activate the group explicitly it works; it just can't do it automatically.

Wiping out the partition table (i.e., MBR) on the drive seems to fix the issue, and LVM can now see the VG at boot.



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