[linux-lvm] 2.4.20pre5 CONFIG_BLK_STATS breaks LVM tools

Heinz J . Mauelshagen mauelshagen at sistina.com
Mon Sep 9 06:28:41 UTC 2002


this is a known issue and I am working on a patch to send to Marcelo.

Try removing the add_gendisk() call (~line 460) in drivers/md/lvm.c and
retry as a workaround for now,

On Thu, Sep 05, 2002 at 09:44:59PM +0200, Andreas Steinmetz wrote:
> If CONFIG_BLK_STATS is enabled in 2.4.20pre5 this breaks at least the
> LVM tools. The symptom on a system running initrd to do vgscan/vgchange
> to be able to boot is that after
> RAMDISK: Compressed image found at block 0
> Freeing initrd memory: 734k freed
> VFS: Mounted root (ext2 filesystem).
> the system hangs with the CPU under load. It is difficult for me to
> investigate this further as both systems I do have available run a
> LVM/reiserfs only setup and thus I can't have a look at the layout of
> /proc/partitions in the CONFIG_BLK_STATS enabled page.
> It would, however, be worth a word of warning in Configure.help that
> this option can break userspace tools that may be important for system
> boot and other system functions.
> -- 
> Andreas Steinmetz
> D.O.M. Datenverarbeitung GmbH
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> linux-lvm at sistina.com
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> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html


Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***


Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
Mauelshagen at Sistina.com                           +49 2626 141200
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