[linux-lvm] Patch for Kernel 2.2.16

[AJ Lewis]

On Fri, Jan 19, 2001 at 10:17:57AM -0600, AJ Lewis wrote:
> On Fri, Jan 19, 2001 at 04:19:54PM +0100, ZECHA,HOLGER (HP-Germany,ex1) wrote:
> > is there a lvm patch for kernel 2.2.16 available ?
> 
> By following the instructions in the PATCHES/README file for 0.9.1 Beta2, I
> was able to generate a patch that appears to work for 2.2.16.  I copied the
> fragments-2.2.18 file to fragments-2.2.16 and ran 'make' in the PATCHES
> directory.  This created a file called lvm-0.9.1_beta2-2.2.16.patch.
> 
> I grabbed the 2.2.16 rawio patch from the 0.8.1 release of LVM.  (You can
> get this from the LVM ftp site at
> ftp://ftp.sistina.com/LVM/0.8.1/PATCHES/linux-2.2.16-rawio.patch)  I applied
> this rawio patch and the generated lvm patch to the clean 2.2.16 kernel,
> configured, and built the kernel.  After installing the kernel and rebooting
> the machine, I was able to see the volume group i had created with a 2.2.18
> kernel and LVM 0.9.1 Beta2.  I mounted a logical volume from the volume
> group, and was able to use it.  
> 
> That is the extent of the testing I have done, so if you are worried about
> your data, don't do this!  Or at least backup your data before trying it.
> Good luck.
> 

After testing a bit more, I have found a bug in the snapshot creation.
Under load, you can get a 
'kernel panic: brw_kiovec: iobuf not locked for I/O'

Joe, is this the same as the problem you discussed in the 
"[linux-lvm] Kernel panic while snapshotting."
thread?

-- 
AJ Lewis
Sistina Software Inc.                  Voice:  612-379-3951
1313 5th St SE, Suite 111              Fax:    612-379-3952
Minneapolis, MN 55414                  E-Mail: lewis at sistina.com
http://www.sistina.com

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Linux: Because rebooting is for adding new hardware.
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