On Thu, Jul 04, 2013 at 04:27:51PM +0200, Alessandro MACUZ wrote: > root@Microknoppix:/tmp/lvm2-2_02_98# lvconvert -vvv -m1 --mirrorlog > mirrored --alloc normal /dev/lvgrptstnlvm/root /dev/sdb1 So you want to convert an existing LV into a mirror (-m1) with a mirrored log with the default allocation policy allocating all new extents from /dev/sdb1. The current layout: > /dev/sda1 0: 0 1536: root(0:0) > /dev/sda1 1: 1536 767: NULL(0:0) > /dev/sdb1 0: 0 2271: NULL(0:0) > /dev/sdb2 0: 0 31: NULL(0:0) > /dev/sdc 0: 0 7: NULL(0:0) The Physical Extents that can used for allocation during this process: > Adding PE range: start PE 0 length 2271 on /dev/sdb1 Details of the allocation requested: > Allowing allocation on /dev/sdb1 start PE 0 length 2271 > Parallel PVs at LE 0 length 1536: /dev/sda1 > Still need 1538 total extents: > 1 (1 data/0 parity) parallel areas of 1536 extents each > 2 mirror logs of 1 extents each So it is looking for 1536 extents on a disk that is not /dev/sda1 and 2 further extents for the mirrored log on different disks from each other. But it only has one disk available - /dev/sdb1 - so this will fail unless you go down to --alloc anywhere. So what should you do? If you want a mirrored log, decide where to put it and provide the command with additional space on another disk to hold it. So let it use part of /dev/sda1 perhaps by appending '/dev/sda1:1536' to the command or if that isn't enough, try something like '/dev/sdb2:0 /dev/sdc:0'. Alasdair _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
