On Thu, 10 Nov 2005, Yu Safin wrote: > On 11/10/05, Kyek, Andreas, VF-DE <[EMAIL PROTECTED]> wrote: > > Yu Safin wrote: > > > I have a problem doing a restore of an LVM. > > > I have an LVM with one Logical Volume and three disks (physical) > > > mounted on /original. > > > I did a backup of the three disks (dd) and now I need to > > > restore but instead > > > of restoring to the original LVM mount point (/original), I want to > > > restore to a new mount point (/backup). > > > > > > ??? > > a dd Backup/Restore works on _physical_ devices (HDs, partitions, etc). > > It does not work on logical stuff like "mountpoints". > OK, I understand this. > > > > Just Restore your three disks with dd > which is what I did but to different 3 disk. However, I don't want to > restore to the /original mount point, I am trying to keep my existing > /original and restore to a new /restore location (on the new 3 disks). > > Then try to rescan your volume group. > > If your LV can be found, mount it whereever you want. > For some reason when I go through the pvcreate, vgcreate, lvcreate, > lvdisplay everything is fine. Then I do a "mkdir /restore" and when I > follow it with the mount, it complains that I have to do a "mke2fs -j > /---new---LVM". But if I do that, then the mount works but the data > from my original LVM is not there. > I have done a few restores trying to figure out how to get around this > problem. > My restores take about 3 hours.
Why don't you try this: This requires that you have the dd'd file available locally. mount -o loop,ro -t filesystem_type ./file_from_dd /temporary_mount_point If that works, then: using lvcreate and mkfs.whatever, make a filesystem large enough to hold all of the files. Mount it under /new_mount_point. cd /temporary_mount_point rsync -av . /new_mount_point umount /temporary_mount_point An alternative (and this is *dangerous*): use lvcreate to make a new logical volume *at least* as large as the file_from_dd. Then dd if=file_from_dd of=/path/to/logical_volume bs=4K sync By /path/to/logical_volume: If your volume group is named "jbod" and you created a logical volume named "fish", the path would be /dev/jbod/fish Lastly: never use dd to back anything up again. Back up files, not block devices. -- Carpe diem - Seize the day. Carp in denim - There's a fish in my pants! Jon Nelson <[EMAIL PROTECTED]> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
