Good morning, A couple weeks ago I posted here about an LVM problem that was of my own making. I accidentally deleted the LVM partition /dev/sdb1 from my drive. I recreated the partition with the same geometry and never rebooted the server, got sidetracked and forgot about yet. Yesterday I had a power failure and now this particular server won¹t boot.
I can not boot the server at all. It would appear that /boot lives in /dev/sda1, and there is an LVM partition on /dev/sda2 and a second one on /dev/sdb1. If I boot from a rescue disk, I can run pvscan, vgscan and lvscan and everything ³looks² alright and there are no errors reported by vgck or lvck. If I do a vgchange ay to activate the groups, I can see /dev/VolGroup00/LogVol01. I can also see /dev/mapper/VolGroup00-LogVol00 and /dev/mapper/VolGroup00-LogVol01. However, if I try an mount /dev/VolGroup00/LogVol01, I get a kernel panic. I do not see /dev/VolGroup/LogVol00 at this time. The box is CentOS 5.4 and I have tons of data on it. I¹m sure the data on the disks is fine, at least it all was yesterday before the power failed. I¹m sure there is something very simple that I¹m missing here that (hopefully) will turn out to be an easy fix. Since I can not mount /, or any other filesystem besides /boot, I was thinking that I might could do a vgbackup and vgrestore to backup and restore the information, but I don¹t know if that¹ll do the trick, or, if it¹ll do it without blowing out my data. I have the reinstall CD¹s handy, but there is about 2TB worth of data on this server that I really, really don¹t want to loose. If someone can offer me some help here, or point me to a toolset to recover this, or even a consultant that can walk me through getting back online. One option I do have, if I can get the volumes online (LogVol00) is to transfer all the data to another machine, reinstall and then put it back but I still haven¹t gotten that far! TIA for all the help! -brian
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