Re: Any reason why we can't auto-start LVM (vg's) in the kernel?

[Andreas Dilger]

Steve, writes:
> Is there any reason why we can't auto-detect/bring up volume-groups in the
> kernel instead of creating a ramdisk volume to do a vgscan and then mount a
> rootlv?

Um, yes, because it won't work.  The user tools do the I/O of LVM state
information to the disk.  The kernel LVM module has no concept of how
LVM information is stored on disk.

> Just trying to see if there is a way (or would make sense) to skip the
> ramdisk stage in mounting a root logical volume.

Need to re-write (or at least seriously enhance) the LVM kernel code to do
this.  Sorry.

Cheers, Andreas
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert