The pvmove worked, I've moved the boot to the new disc, so my old disc is now effectively redundant. The problem is that, as I suspected, I can't pvmove off my usb drive! I spotted these messages in /var/log/messages Oct 29 03:44:06 oak kernel: device-mapper: table: device 8:2 too small for target Oct 29 03:44:06 oak kernel: device-mapper: table: 253:0: linear: dm-linear: Device lookup failed Oct 29 03:44:06 oak kernel: device-mapper: ioctl: error adding target to table Oct 29 03:46:15 oak kernel: device-mapper: table: device 8:2 too small for target Oct 29 03:46:15 oak kernel: device-mapper: table: 253:0: linear: dm-linear: Device lookup failed Oct 29 03:46:15 oak kernel: device-mapper: ioctl: error adding target to table They seem to occur whenever I do a pvmove involving my new disc - the partition used in the volume group. I have successfully removed and re-created the swap volume, just to see if this might help. I hasn't! # dmsetup table VolGroup00-lv_swap: 0 1966080 linear 8:2 593887616 VolGroup00-LogVol00: 0 56229888 linear 8:35 384 VolGroup00-LogVol00: 56229888 593887232 linear 8:2 384 Nick On Wed, 2009-10-28 at 23:21 +0000, Nicholas Robinson wrote: > i haven't had any replies from dm-devel mailing list so I tried pvmove > onto my external usb drive - i.e. > > pvmove /dev/sdb2 /dev/sdc3 > > It is working so far! So, the device-mapper error must refer > to /dev/sda2 rather than the source disc as I'd assumed. I'm not sure > where this will leave me. My guess is that trying to pvmove from the usb > drive to the new disc will give the same error. > > I don't really want the usb drive hanging off the front of my server, > but it will be nice to get rid of the old disc. Maybe I'll just have to > buy a new disc. > > Nick > > On Wed, 2009-10-28 at 09:07 -0700, malahal@us.ibm.com wrote: > > Nicholas Robinson [npr@bottlehall.co.uk] wrote: > > > Hi Malahal > > > > > > Thanks for your reply. I don't really want to use the new/temporary disc > > > long-term, it seems that pvmove needs space to create a mirror-lv whilst > > > it is working and it seemed possible that the original problem was that > > > this extra space wasn't there. > > > > As far as I know, you don't need extra space. The temporary mirror is > > created to copy the data. I believe, it creates a corelog mirror and > > should NOT need extra space. Let us hope someone responds from the > > dm-devel list! > > > > _______________________________________________ > > 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/ _______________________________________________ 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/
