[linux-lvm] highmem64G Breaks My LVM
Eddie Atherton
stunnel at attglobal.net
Thu Jun 4 01:11:53 UTC 2009
Eddie Atherton wrote:
> 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 at 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 at 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
Upgrading to the latest version of the combined device-mapper and lvm:
2.02.47 appears to fix this issue.
Cheers,
Eddie
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