I am sure it has been discussed, but booting an instance from a volume stored on SAN (similar to EBS) is clearly an important use case for private clouds...
Best Regards, Salman A. Baset Research Staff Member, IBM T. J. Watson Research Center Tel: +1-914-784-6248 From: Josh Durgin <[email protected]> To: [email protected] Date: 03/22/2012 07:25 PM Subject: [Openstack] boot from volume use cases Sent by: [email protected] At the last couple volumes meetings, there was some discussion of the desired behaviors of nova's boot from volume functionality. There were a few use cases discussed, but there are probably plenty we didn't think of, so it would be useful to get input from a larger audience. What use cases for boot from volume are people interested in, and which should nova support? Here are a few use cases: 1) I use an existing instance to manually create a bootable volume containing an OS there is no image for (and I cannot create an image). I boot the new OS from the volume I created. 2) I create a bunch of new instances that have no ephemeral disks, but are all based on the same image. The data from the image is copied to a new volume for each new instance. 3) I have an instance that has no ephemeral disks, and stores everything in a volume. I take periodic snapshots of the volume. Later, my original instance becomes corrupted, and I want to restore from the last known good snapshot I took. I boot a new instance from a new volume created by cloning from the last good snapshot. _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
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