On Wed, Jun 15, 2005 at 12:31:38PM -0400, David Plainfosse wrote: > y Turns on mirror write consistency which insures data consistency > among mirrored copies of a logical volume during normal I/O processing. That comes as default with device-mapper - there's no option to turn it off. > I have read in archived emails that the lvcreate -m1 option enables > mirrored copies but it is not officially > supported. Do you know if a particular LVM2 release support mirrored volumes > ? Work is progressing on this - some limited mirror features are available in 2.01.12: Can create new volumes as mirrors, and remove them when not active. lvchange -an doesn't work properly yet and must be followed with some dmsetup remove. Device failure is not handled. Power cut / reset button is handled OK, keeping the mirror images in sync with each other. Alasdair -- agk@redhat.com _______________________________________________ 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/