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From "Artjoms Petrovs (JIRA)" <>
Subject [jira] [Created] (CLOUDSTACK-6224) VM Snapshot inconsistent size
Date Tue, 11 Mar 2014 15:29:42 GMT
Artjoms Petrovs created CLOUDSTACK-6224:

             Summary: VM Snapshot inconsistent size
                 Key: CLOUDSTACK-6224
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Hypervisor Controller, Management Server
    Affects Versions: 4.2.1
         Environment: Cloudstack 4.2.1
XenServer 6.2
Vcenter 5.5 ESXi
            Reporter: Artjoms Petrovs

During the creation of VM Snapshot [VMware], resulting size is written in table „volumes”,
column  vm_snapshot_chain_size. It seems that size of a VM Snapshot is calculated manually
via the method getVMSnapshotChainSize(..)  and it gives overexpected result ( hundreds of
terabytes ) and is much larger than the filesize, that we can see in VMware itself. By calculating
the vmdk and vmsn file sizes manually. Xen VM snapshots [disks only] give similar results.
For me it seems that either the method works incorrectly, either it loops between some simlinks.

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