[Bug 684875] Re: Patch to Natty 2.6.37-virtual breaks non-EC2 users

[Stefan Bader]

I did a small test this morning with ami-e4c9388d:

IMAGE	ami-e4c9388d	099720109477/ebs/ubuntu-images-testing/ubuntu-natty-daily-amd64-server-20110104	099720109477	available	public		x86_64	machine	aki-427d952b			ebs
BLOCKDEVICEMAPPING	/dev/sda1		snap-9fb802f2	8

Originally running 2.6.37-11 and showing sda and sdb in
/proc/partitions. I did a build from the current master-next in Natty:

# uname -a
Linux ip-10-117-77-50 2.6.37-12-virtual #26~lp684875v1 SMP Wed Jan 5 09:14:12 UTC 2011 x86_64 GNU/Linux

# cat /proc/partitions
major minor  #blocks  name

 202        1    8388608 xvda1
 202       16  440366080 xvdb

This works with or without the xen_emul_unplug=unnecesarry switch
(expected as m1.large is not HVM). So we seem to be ok with just
reverting the patch. Though we should check whether we now need the
argument for our cluster instances.

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https://bugs.launchpad.net/bugs/684875

Title:
  Patch to Natty 2.6.37-virtual breaks non-EC2 users