Bug 832632

Summary: [Feature Request] Copy On Write (COW)
Product: [Community] GlusterFS Reporter: Robert Lanning <lanning>
Component: coreAssignee: bugs <bugs>
Status: CLOSED EOL QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: mainlineCC: bugs, gluster-bugs
Target Milestone: ---Keywords: FutureFeature
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
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Clone Of: Environment:
Last Closed: 2015-10-22 15:46:38 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Robert Lanning 2012-06-16 05:36:50 UTC 
Description of problem:
Need a COW for VM cloning.

Additional info:
This can be done, with the support of COW in the underlying filesystems.

If you use BTRFS for your bricks, then when a COW request hits a file, a link can be made at the destination brick for the new copy, then instigate a COW action on the local file.

Then a rebalance can finish the actual copy process to the real destination brick, in the background.
Comment 2 Kaleb KEITHLEY 2015-10-22 15:46:38 UTC 
because of the large number of bugs filed against mainline version\ is ambiguous and about to be removed as a choice.

If you believe this is still a bug, please change the status back to NEW and choose the appropriate, applicable version for it.