Github user abhinandanprateek commented on the issue: https://github.com/apache/cloudstack/pull/1807 @syed @swill the change is good. What needs to be considered is what happens with old snapshots, from a older version upgraded to this version, that are without the .vhd extension. If it can be checked that in a upgraded version where the older snapshots are without .vhd extension and new ones with .vhd extension, that cloudstack operations will work fine. Otherwise during upgrade we need to add .vhd to older snapshots for Xen. Another thing is that the marvin tests still assume that there is no .vhd extension and adds it. This needs to be fixed. We were seeing some marvin test fail on Xenserver due to a additonal .vhd extension. Look at the test_01_snapshot_root_disk failure for Xen in this PR for example: https://github.com/apache/cloudstack/pull/1754 and the cause that @serg38 pointed out.
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