Dne 07. 09. 20 v 18:34 Tomas Dalebjörk napsal(a):
thanks for feedback so if I understand this correctly # fallocate -l 100M /tmp/pv1 # fallocate -l 100M /tmp/pv2 # fallocate -l 100M /tmp/pv3 # losetup —find —show /tmp/pv1 # losetup —find —show /tmp/pv2 # losetup —find —show /tmp/pv3 # vgcreate vg0 /dev/loop0 # lvcreate -n lv0 -l 1 vg0 # vgextend vg0 /dev/loop1 # lvcreate -s -l 1 -n lvsnap /dev/loop1 # vgchange -a n vg0 # lvconvert —splitsnapshot vg0/lvsnap # vgreduce vg0 /dev/loop1
Hi Here you would need to use 'vgsplit' rather - otherwise you loose the mapping for whatever was living on /dev/loop1
# vgcreate vg1 /dev/loop2 # lvcreate -n lv0 -l 1 vg1 # vgextend vg1 /dev/loop1
And 'vgmerge'
# lvconvert -s vg1/lvsnap vg1/lv0 not sure if the steps are correct?
I hope you realize the content of vg1/lv0 must be exactly same as vg0/lv0. As snapshot COW volume contains only 'diff chunks' - so if you would attach snapshot to 'different' lv - you would get only mess. Zdenek _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
