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hi, i can't find this file 'euca2ools/commands/eucacommand.py',i have get the latest euca2ools, latest boto and that patch.  can you give me a hand?
I'm grateful for your contribution to the boot-from-volume development.When can I use the 'boot-from-volume' in a production environment?  

Looking forward to receiving your reply
At 2011-04-17 00:48:49，"Isaku Yamahata" <yamahata at valinux.co.jp> wrote:
>Hi. I've implemented the basic support for boot from volume
>and uploaded lp:~yamahata/nova/boot-from-volume
>blue print:
>https://blueprints.launchpad.net/nova/+spec/boot-from-volume
>Adam Johnson, do you have any progress?
>
>With the patches, VM can boot with a attached partion based on volume
>(including root partition). For example,
>euca-run-instances ami-XXXX -k mykey -t m1.tiny \
>	--block-device-mapping /dev/vda=vol-00000001::false \
>	--block-device-mapping /dev/vdb=vol-00000002::false
>
>Although EBS manual syas that snapshot should be specified to,
>I chose to volume id because creating snapshot/volume from snapshot/volume
>isn't supported yet. They are proposed as
>https://blueprints.launchpad.net/nova/+spec/snapshot-volume
>https://blueprints.launchpad.net/nova/+spec/clone-volume
>
>My next step is to add ephemeral device and no device support
>and ami support. Comments?
>
>thanks,
>
>Note:
>For --block-device-mapping options support,
>you need latest euca2ools, latest boto which requires python 2.7 or later
>and the following patch
>
>--- euca2ools/commands/eucacommand.py	2011-04-11 13:23:49 +0000
>+++ euca2ools/commands/eucacommand.py	2011-04-16 02:11:12 +0000
>@@ -571,19 +571,23 @@
>         return file_path
> 
>     def parse_block_device_args(self, block_device_maps_args):
>-        block_device_map = BlockDeviceMapping()
>+        block_device_map = boto.ec2.blockdevicemapping.BlockDeviceMapping()
>         for block_device_map_arg in block_device_maps_args:
>             parts = block_device_map_arg.split('=')
>             if len(parts) > 1:
>                 device_name = parts[0]
>-                block_dev_type = BlockDeviceType()
>+                block_dev_type = boto.ec2.blockdevicemapping.BlockDeviceType()
>                 value_parts = parts[1].split(':')
>                 if value_parts[0].startswith('snap'):
>                     block_dev_type.snapshot_id = value_parts[0]
>+                elif value_parts[0].startswith('vol-'):
>+                    # openstack doesn't support volume snapshot at the moment
>+                    # So use volume for now instead of snapshot
>+                    block_dev_type.snapshot_id = value_parts[0]
>                 else:
>                     if value_parts[0].startswith('ephemeral'):
>                         block_dev_type.ephemeral_name = value_parts[0]
>-                if len(value_parts) > 1:
>+                if len(value_parts) > 1 and value_parts[1] != '':
>                     block_dev_type.size = int(value_parts[1])
>                 if len(value_parts) > 2:
>                     if value_parts[2] == 'true':
>
>
>
>-- 
>yamahata
>
>
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