> if lvm do not support lv copy? it is better copy on write. > dd takes long time. For a complete copy the only thing faster than "dd" is two copies of "dd" piped together. dd is basically limited by the speed of the physical disks, assuming proper arguments to dd. For a copy on write, that's called a snapshot. LVM COULD beused to copy, by making and splitting a mirror, but that's going to be a lot slower than dd. (Though a mirror and split can be used on a live filesystem, wth it unmounted only for an instant during the split). -- Ray Morris support@bettercgi.com Strongbox - The next generation in site security: http://www.bettercgi.com/strongbox/ Throttlebox - Intelligent Bandwidth Control http://www.bettercgi.com/throttlebox/ Strongbox / Throttlebox affiliate program: http://www.bettercgi.com/affiliates/user/register.php On Tue, 29 Mar 2011 20:53:37 +0800 (CST) yue <ooolinux@163.com> wrote: > if lvm do not support lv copy? it is better copy on write. > dd takes long time. > > thanks _______________________________________________ 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/
