> Does anyone have any ideas on how I might be able to restore/mount > the /dev/md2 partition - even if it is just enough to copy the data > elsewhere?? > > thanks > > pantz I just last week had a HD die on me - although in a non-raid/non-lvm setup. Still, some of these techniques might work for you. First off, since you just had 2 drives die, I would think you now have carte blanche to go buy 2 new disks, so do that. How many drives can your machine hold? * If only 2 drives, then install one of the new disks, and the bad disk. Create 2 partitions on the new disk: 1 for the OS, and 1 for the recovery data (i.e., the recovery partition needs to be at least the size of the partition you're trying to recover.) * If it can hold more than 2 drives, then just install both new disks and the bad disk. Put the OS on one of the new disks and a partition for the recovery data on the other new one. Install the OS onto one of the new disks. Now, since you have a bootable system with an OS, you can install LVM onto it. Plus you'll now have access to dd, which you can use to do the recovery. (Trying to recover from a dd'ed copy of a bad disk can often give better results than trying to recover from the actual disk.) Basically just dd the data from the partition on the bad disk to the partition on the new disk (e.g., "dd if=/dev/hda2 of=/dev/hdb3"). Theoretically, you've now got a copy of the original partition, and theoretically LVM should be able to use it just like the old one. Do fsck's on all the relevant partitions and/or LV's once you're done with this, as there could be glitches that occurred. Assuming all goes well, you then clean up: take out the bad disk, set up the new data disk properly, etc. I can't guarantee this'll work of course. The partition could be really hosed and unable to be recovered by dd, it might not pass a fsck, partitions/lv's might not be able to be mounted, etc. But this did work for me last week. If there were glitches in any of the recovered data, I haven't found them yet, and it passed the fsck without a problem. One other option to consider: perhaps you can use Knoppix as a rescue disk here. IIRC, the Knoppix Live CD only has LVM 1, but I think I heard about a Knoppix DVD available somewhere that has LVM 2. This might make the process easier, as you wouldn't have to worry about getting the OS installed and running on one of the HD's first. You'd could just run the OS off of the CD/DVD and do your recovery that way, and deal with installing the OS afterwards. HTH, and that my limited of knowledge on LVM and RAID hasn't led me to misunderstand the situation or give you any bad advice. Good luck! DR ============================================================================== This message is for the sole use of the intended recipient. If you received this message in error please delete it and notify us. If this message was misdirected, CSFB does not waive any confidentiality or privilege. CSFB retains and monitors electronic communications sent through its network. Instructions transmitted over this system are not binding on CSFB until they are confirmed by us. Message transmission is not guaranteed to be secure. ============================================================================== _______________________________________________ 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/
