[CentOS] RAID + LVM Addition to CentOS 5 Install
webbn at acm.org
Tue Sep 4 14:56:55 UTC 2007
On 9/4/07, Alain Spineux <aspineux at gmail.com> wrote:
> You have all the history of your lvm volumes in /etc/lvm/archive|backup
> search for the missing id in the archive to understand what append !
> Does raid synchronization was ended before your have created your new
> PV or before to reboot. It should not change anything, but just an
I will check that. I found those files before, but had no direction on them.
Anyone have an idea on how to capture the output of LVM on boot? It
goes by pretty fast then reboots, I have only 1 or 2 seconds to write
it down before it reboots. Took me 2 or 3 reboots just to get the
gist of the message last time.
I've tried using a serial console (append options to grub:
console=tty0 console=ttyS0,38400), but the errors don't show up on the
serial console only on the real console. If I could get it to output
to the serial console, it would be much easier to track down the
volumes with errors.
> On 9/4/07, Nick Webb <webbn at acm.org> wrote:
> > 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
> > Thanks!
> > Nick
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> Alain Spineux
> aspineux gmail com
> May the sources be with you
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