Independent boot from volume

Bug #1159824 reported by Vincent Hou on 2013-03-25
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Cinder
Wishlist
Vincent Hou

Bug Description

So far when we try to boot from a volume, we need to specify both block-device-mapping and image-id. I suggest we get rid of the image-id in further development.
What we can do:
For image which has kernel and ramdisk, we can also copy them into two other volumes, set bootable to false for them and create the link with the bootable volume.

There are some attributes like disk format, container format, checksum, etc. We can also copy them into key-value pairs and save into volume_glance_metadata table, so even if the original image is deleted, all the information is still retained in volumes.

Chuck Short (zulcss) on 2013-04-11
Changed in cinder:
status: New → Confirmed
Changed in cinder:
importance: Undecided → Wishlist
Vincent Hou (houshengbo) on 2013-05-31
Changed in cinder:
assignee: nobody → Vincent Hou (houshengbo)

Fix proposed to branch: master
Review: https://review.openstack.org/34705

Changed in cinder:
status: Confirmed → In Progress
Vincent Hou (houshengbo) wrote :

This patch copies some more attributes into volume_glance_metadata, including size, disk_format, container_format,
checksum, min_disk and min_ram.

I have not implemented copying the kernal and ramdisk. Need more discussions about whether it is a good approach.

Vincent Hou (houshengbo) on 2013-06-27
Changed in nova:
assignee: nobody → Vincent Hou (houshengbo)

Reviewed: https://review.openstack.org/34705
Committed: http://github.com/openstack/cinder/commit/4ef5eabaeeb70d5090079819f4c2442742f43373
Submitter: Jenkins
Branch: master

commit 4ef5eabaeeb70d5090079819f4c2442742f43373
Author: Vincent Hou <email address hidden>
Date: Thu Jun 27 15:43:00 2013 +0800

    Save some more image attributes to volume_glance_metadata.

    Current issue: When copying an image to a volume, attributes like size, disk_format, container_format,
    checksum, min_disk and min_ram have not been copied so far. When booting a VM from a volume, we are
    not able to check these atrributes without giving the image id. Furthermore, if the original
    image is deleted, we will lose all the information.

    This patch saves these attributes into volume_glance_metadata. We can still check these attributes
    without giving the image id when booting a VM from a volume.

    Fixed Bug 1159824.

    Change-Id: I42ce676026d32be6e3f4bec6fd269908e2df0a8c

Changed in cinder:
status: In Progress → Fix Committed
tags: added: volumes
Vincent Hou (houshengbo) on 2013-07-03
no longer affects: nova
Thierry Carrez (ttx) on 2013-07-17
Changed in cinder:
milestone: none → havana-2
status: Fix Committed → Fix Released
Thierry Carrez (ttx) on 2013-10-17
Changed in cinder:
milestone: havana-2 → 2013.2
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