I originally posted this on the LinuxQuestions forum:
http://www.linuxquestions.org/questions/slackware-14/highmem64g-kills-lvm-728418/
I have a fairly vanilla Slack 12.2 system. I recently upped my memory
to 8GB, and so recompiled the kernel, making a single change. HIGNMEM4G
was changed to HIGHMEM64G. On re-booting, I could see the extra memory,
but, unfortunately, I lost all my LVM volumes.
After a few checks, I found that vgscan was failing:
root@The-Tardis:~# vgscan --mknodes --verbose
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/sda1: Checksum error
Finding all logical volumes
If I reboot back to the HIGHMEM4G kernel, then all works fine again:
root@The-Tardis:~# vgscan --mknodes --verbose
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
Finding volume group "raid_vg"
Found volume group "raid_vg" using metadata type lvm2
Finding all logical volumes
All the LVM volumes reside on an LSI megaRAID card, detected as
/dev/sda, which is dedicated to a single PVM.
Any ideas why changing the HIGHMEM kernel option would break LVM.
Cheers,
Eddie
_______________________________________________
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/
