Kirk Kosinski created CLOUDSTACK-1872:
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Summary: Do not accept OVAs with multiple VMDKs for uploaded
volumes or templates
Key: CLOUDSTACK-1872
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-1872
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Components: API, Template, VMware, Volumes
Affects Versions: 4.0.1
Reporter: Kirk Kosinski
CloudStack volumes and templates are meant to be one single virtual disk. This
is always the case with KVM and XenServer/XCP since the files used for volumes
and templates are virtual disks (QCOW2, VHD). However, VMware volumes and
templates are in OVA format, which are archives that can contain a complete VM
including multiple VMDKs and other files such as ISOs.
Currently, CloudStack will accept an OVA with an invalid configuration, extract
it to secondary storage, and allow end-users to use it. This can cause
unintended behavior or possibly failures when an end-user does try to use it.
At the very least, it wastes space on secondary and possibly primary storage.
For example, here is a uploaded volume that contained two VMDKs on secondary
storage:
# ll /mnt/secondary/volumes/12/
total 332
-rw-rw-rw- 1 root root 146944 Apr 1 16:38
3ab61094-8170-3139-a6b4-8edd2b4942ef.ova
-rw-r--r-- 1 root root 68608 Apr 1 16:35 blankvm2-disk1.vmdk
-rw-r--r-- 1 root root 68608 Apr 1 16:35 blankvm2-disk2.vmdk
-rw-r--r-- 1 root root 200 Apr 1 16:35 blankvm2.mf
-rw-r--r-- 1 root root 5930 Apr 1 16:35 blankvm2.ovf
-rw-rw-rw- 1 root root 328 Apr 1 16:38 volume.properties
Attaching this volume to a VM will result in both VMDKs being copied to primary
storage, but only one will be attached to the VM.
CloudStack should verify whether or not an OVA contains a supported
configuration, and should give an error and reject the OVA if it is not
supported.
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