[Bug 665235] Re: attaching a volume to maverick instance may boot off it

[Scott Moser]

Two more things to note
1.) I just opened bug 672986 that euca-bundle-vol should copy uuid
2.) above, I stated that grub2 loads the kernel on uec and pv-grub.  It may have similar issues.

** Description changed:

- Binary package hint: cloud-init
+ Binary package hint: grub-legacy-ec2
  
  I booted a maverick instance, modified it a bit, and created a snapshot
  of that volume.
  
  I then, booted another maverick instance like:
  run-instances ami-548c783d --instance-type t1.micro --block-device-mapping /dev/sdh=${SNAPSHOT}:${SIZE}
  
  the surprising result was that the instance booted with root = /dev/sdh.
  
  The reason for that is that menu.lst in the instance says:
  kernel          /boot/vmlinuz-2.6.35-22-virtual root=LABEL=uec-rootfs ro console=hvc0
  initrd          /boot/initrd.img-2.6.35-22-virtual
  
  In this instance, there were, then 2 filesystems that had LABEL=uec-rootfs.
  The kernel just chose /dev/sdh.
  
  update-grub-legacy-ec2 is what writes the 'LABEL=uec-rootfs'.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: cloud-init 0.5.15-0ubuntu3
  ProcVersionSignature: User Name 2.6.35-22.33-virtual 2.6.35.4
  Uname: Linux 2.6.35-22-virtual x86_64
  Architecture: amd64
  Date: Fri Oct 22 17:19:50 2010
  Ec2AMI: ami-548c783d
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-east-1c
  Ec2InstanceType: t1.micro
  Ec2Kernel: aki-427d952b
  Ec2Ramdisk: unavailable
  PackageArchitecture: all
  ProcEnviron:
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  SourcePackage: cloud-init

** Summary changed:

- attaching a volume to maverick instance may boot off it
+ grub-legacy-ec2: attaching a volume to maverick instance may boot off it

** Also affects: ubuntu-on-ec2
   Importance: Undecided
       Status: New

-- 
grub-legacy-ec2: attaching a volume to maverick instance may boot off it
https://bugs.launchpad.net/bugs/665235
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