Hello Why software RAID is not an option? It works with partitions as well as with whole disks (actually it doesn't care what it is working on as long as it's a block device) The amount of log data is small - on my test setup for creating 1GB mirrored LV log fit into single 16MB PE - don't know how much of it was left freee though. Everything is in mans - the HOWTO seems to be a little old But if all you want to do is mirroring one partition, than just create a partition of the same size (well, it can be bigger, but then the remaining space is lost an unusable) on the other drive and create md over them. Hope this helps Martin -----Original Message----- From: linux-lvm-bounces@redhat.com [mailto:linux-lvm-bounces@redhat.com] On Behalf Of Jess Bromley Sent: Tuesday, April 08, 2008 11:15 AM To: linux-lvm@redhat.com Subject: LVM mirroring questions... Hi all, I've been trying to find out about LVM mirroring, but it's hard to find much information in the documentation. Is mirroring considered stable/ready for production use yet? "man lvcreate" and "man lvconvert" suggest that the current stable versions support creating mirrored volumes, but the HOWTO has nothing to say about it. On a more detailed note, what sort of size does the physical volume for the disk log need to be in relation to the size of the logical volume to be mirrored, and is there any way to specify which physical volume will hold the disk log (either using lvconvert or lvcreate)? I've got a situation where I want to mirror only a partition of a physical disk on to that of another physical disk, not the whole disk; so software/hardware RAID isn't an option. Thanks for your help, J Bromley _______________________________________________ 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/ _______________________________________________ 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/
