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Re: [linux-lvm] LVM problems



Tobias Hahn writes:
> I have serious trouble trying to get LVM to work again since I upgraded
> my lvm-tools to 0.9beta6. I cannot access my vg (and needless to say,
> almost all of my system is on that vg :-( ). The problem is that the
> kernel complains about an unsupported ioctl. I looked up this problem in
> lvm-related mailinglists and figured out that this is a version mismatch
> between kernel lvm and user lvm.

But this message is only a warning, and not a real source of problems.
If you are having problems, it is from something else.  If you were using
the beta2 tools or earlier, there is a chance your VGDA is slightly broken
(UUID problems).  Please search the mailing list about this for instructions
on how to fix.

> At that point I was using kernel
> 2.4.3. According to the mailing list, the problem should be fixed in
> kernel 2.4.4. However, kernel 2.4.5 (downloaded from ftp.kernel.org) still
> contains 0.9beta2.

There are some LVM fixes in the -ac kernel patch, but none in the Linus
tree yet (sigh).

> So I downloaded the lvm-source from ftp.sistina.com
> (both beta6 and beta7) and tried to patch kernel 2.4.5 following the
> instructions in PATCHES/README. The patched kernel, however, does not
> link any longer.

> drivers/md/mddev.o(.text+0x7e01): undefined reference to `get_hardblocksize'
> drivers/md/mddev.o(.text+0x7e3d): undefined reference to `get_hardblocksize'

I could have sworn this problem was fixed already, but maybe only in CVS?
Time for a new patch release I guess.  As someone else already mentioned,
simply change get_hardblocksize to get_hardsect_size() in lvm.c.

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


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