On 9/4/07, Ross S. W. Walker rwalker@medallion.com wrote:
From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Nick Webb
Hi All,
I have what I believe to be a pretty basic LVM & RAID setup on my CentOS 5 machine:
Raid Partitions: /dev/sda1,sdb1 /dev/sda2,sdb2 /dev/sda3,sdb3
During the install I created a RAID 1 volume md0 out of sda1,sdb1 for the boot partition and then added sda2,sdb2 to a separate RAID 1 volume as well (md1). I then setup md1 as a LVM physical volume for volume group 'system'. I left the sda3,sdb3 partitions available for future use.
Next I created swap, /, /usr, /var, etc. logical volumes in the system volume group and continued with this install as normal. Everything went fine. I was able to use the system, reboot, etc., without problems.
I then discovered that I needed more space in my /var volume than was available in the system volume group. So, I created another RAID device, /dev/md2 (using sda3,sdb3), and created an LVM physical volume on top of that. Finally, I extended the system physical volume to contain this new physical volume and expanded the size of the /var volume.
This worked fine, but on reboot I get a ton of errors from LVM saying that volume with id xxxx-xxxx-xxxx... was not found and the system automatically reboots. This seems to happen for all volumes, not just the ones I changed. This error even happens for a separate volume group (called 'extended') that is on a separate set of disks and was existing prior to the CentOS 5 install.
Any idea on some step I missed? I know things are still fine on the disks, as when I boot with the CentOS DVD with the 'linux rescue' option all RAID & LVM volumes are available for use. So from this it seems I need to update some CentOS config file?
Here are some config files: http://pastebin.com/m6d5075dc
Did you PV /dev/sda3 and /dev/sdb3 instead of /dev/md2 either before or after the RAID set was created?
-Ross
I don't think so, the partition types are 'fd' and if I boot from the rescue CD, everything seems to be working fine.
sh-3.1# fdisk -l
Disk /dev/sda: 18.2 GB, 18210036736 bytes 255 heads, 63 sectors/track, 2213 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/sda1 * 1 32 257008+ fd Linux raid autodetect /dev/sda2 33 1122 8755425 fd Linux raid autodetect /dev/sda3 1123 2213 8763457+ fd Linux raid autodetect
Disk /dev/sdb: 18.2 GB, 18210036736 bytes 255 heads, 63 sectors/track, 2213 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/sdb1 * 1 32 257008+ fd Linux raid autodetect /dev/sdb2 33 1122 8755425 fd Linux raid autodetect /dev/sdb3 1123 2213 8763457+ fd Linux raid autodetect
Nick