Instances should use cow instead of flat files

Registered by Vish Ishaya on 2010-11-01

Right now, instance disks are stored as files in the system and manually partitioned. This leads to very slow load times and a lot of redundant data. Instances should use Copy on Write to conserve space and speed up launch times.

Blueprint information

Status:
Complete
Approver:
Rick Clark
Priority:
Low
Drafter:
Vish Ishaya
Direction:
Needs approval
Assignee:
Vish Ishaya
Definition:
Pending Approval
Series goal:
Accepted for bexar
Implementation:
Implemented
Milestone target:
None
Started by
Vish Ishaya on 2011-01-05
Completed by
Thierry Carrez on 2011-01-14

Related branches

Sprints

Whiteboard

Feedback at the design summit was that LVMs with CoW are inefficient. It is better to use hypervisor-specific CoW images. Changed the spec to reflect that.

Got basic code in. Debugging. Should be ready for review by tonight.

Code in for review.

(?)

Work Items

Dependency tree

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