Hi I am trying to stop the storage pool through php-libvirt api which is a LVM volume group.

when I tried to stop it I got error

error: internal error Child process (/sbin/vgchange -aln mylvmgrp) unexpected exit status 5:   Can't deactivate volume group "mylvmgrp" with 4 open logical volume(s)

Then I tried throggh virsh command but the result remain same.

error: Failed to destroy pool vms

error: internal error Child process (/sbin/vgchange -aln mylvmgrp) unexpected exit status 5:   Can't deactivate volume group "mylvmgrp" with 4 open logical volume(s)

The same error also occured if I use direct vgchange -aln on my kvm host, but then I tried 

this time its worked

1) Now would you please help me? is this libvirt issue? or LVM?

2) Is this possible virsh pool-destroy pool also run the vgchange -aly instead of -aln

Br.

Umar