recap: new 64 bit Intel quadcore server with Adaptec SATA RAID controller, 16x1TB drives. 1 drive JBOD for OS. The rest are setup as RAID6 with 1 spare. We've tried EL5.1 + all yum updates, and EL5.2 stock. We can't get /dev/sdb1 (12TB) stable with ext2 or xfs (ext3 blows up in the journal setup). So I decided to carve /dev/sdb up into a dozen partitions and use LVM. Initially I want to use one partition per LV and make each of those one xfs FS. Then as things grow I can add a PV (one partition per PV) into the appropriate VG and grow the LV/FS. Between typos and missteps, I've had to build up and tear down the LV pieces several times. And now I get messages such as Aborting - please provide new pathname for what used to be /dev/disk/by-path/pci-0000:01:00.0-scsi-0:0:1:0-part6 or Device /dev/sdb6 not found (or ignored by filtering). I clean it all up, wipe out all the files in /etc/lvm/*/* (including cache/.cache), and try again, still broken. I tried rebooting. Still broken. How can I fix this short of a full reinstall? The whole LVM system feels really kludgy. I suppose there's not a better alternative at this time? Thanks, Miles