<html> <body> At 03:21 PM 4/27/2006, Jonathan E Brassow wrote: <blockquote type=cite class=cite cite="">dd is probably the best way right now. in the future, the clone would probably take the form: prompt> lvconvert -m1 vg/lv; (wait for sync); lvsplit vg/lv The syntax isn't worked out yet and lvsplit is not there yet... but we have talked about doing something like that. brassow </blockquote> One possibility that occurs to me is to use RAID-1 under LVM and then clone your LVM file system(s) by splitting a software RAID-1 clone (e.g. MD driver). Even if you don't want to pay the price of redundant disks in your final system configuration, you can leave it with a single 1/2 RAID set with no loss of reliability (over no RAID). You can even do the RAID-1ing on a single disk if that has any potential value, but it's a bit more difficult for me to see how you would separate the clone out that way. Just a thought. I use such RAID-1 cloning quite often and find it very convenient. It seems to me it would work fine in this case. About the only thing I find I have to be careful of is to be sure that if I'm cloning the /boot (or /root if it includes /boot) file system that I make sure the boot record is in place (in my case running grub and writing the appropriate record on the appropriate disk before splitting the RAID system for cloning). I still don't trust LVM for recovering munged file systems (no effective mechanism for fsck if you can't get to the LVM file system, init problems for RAID-10, etc. as mentioned previously on this list) so I'm not using LVM at this time and haven't tested the above mechanism. You're mileage may vary. <blockquote type=cite class=cite cite="">On Apr 26, 2006, at 5:55 PM, Greg Hartzog wrote: <blockquote type=cite class=cite cite="">Hello there folks. I have a question. I am looking for a better way of cloning logical volumes then creating a new logical volume, identical to a source logical volume, and using “dd” to copy data between the two logical volumes. I would love to use dm-mirror to do this, but I do not think any interface has been provided to do this yet. All suggestions and ideas appreciated. I am running lvm2-2.02.04-r1 & 2.6.15 kernel. Thanks! </blockquote> <x-sigsep></x-sigsep> --Jed <a href="http://www.nersc.gov/~jed/" eudora="autourl"> http://www.nersc.gov/~jed/</a></body> </html>