UK — The Register
Architect creates open-source replacement for VM migration tool VMware has hidden
Software1 min read
A cloud architect has built a free, open-source tool called OpenVDDK. It copies the job of a VMware tool that VMware pulled from public downloads, and it helps people move virtual machines away from VMware.
What happened
VMware removed public downloads of its Virtual Disk Development Kit (VDDK). Cloud architect Andrija Panić then wrote a replacement called OpenVDDK. It lets other tools read the virtual disks of a virtual machine (a computer that runs inside another computer). Many migration tools use this to move data off VMware.
Why VDDK mattered
VDDK is a set of code libraries that software can use to read and change virtual disks. Users and VMware's rivals also used it to move virtual machines to other platforms. In August, VMware limited VDDK downloads to its partners, so customers could no longer get it and some migration tools became less useful.
Key facts
- OpenVDDK is released under the Apache license, which is a free open-source license.
- It was tested on VMware vSphere versions 6.7 U3, 7.0.3, 8.0.3 and 9.1.1.
- It can only read disks, not write to them. It is meant for backup and migration.
- Reports say a German cloud provider used it to migrate a large file server, and a US company used it to move to Apache CloudStack/KVM.
Why it matters
People should be able to move or back up their own data without depending on one company's download page. OpenVDDK gives migration tools a way to keep working. Panić also says the reports are not formal audits, so users should still test it carefully before relying on it.
What to watch
- Whether Red Hat and other companies use OpenVDDK to fix their migration tools.
- Whether more businesses report success using it in real production systems.
- How other options, such as OpenNebula's OneSwap and Nutanix's Move tool, compare over time.
Glossary
- VDDK
- VMware's Virtual Disk Development Kit, a set of code libraries that let software read and change virtual disks.
- OpenVDDK
- A free, open-source replacement for VDDK that can read virtual disks for backup and migration.
- VMware
- A company that makes software for running many virtual machines on one physical server.
- Apache license
- A free software license that lets people use, change and share the code.
- OneSwap
- A migration tool from OpenNebula for moving workloads away from VMware.