Starwind x Proxmox Plugin on Proxmox 9

Software-based VM-centric and flash-friendly VM storage + free version
yaroslav (staff)
Staff
Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Sat Feb 07, 2026 5:11 am

My colleagues last tests test showed no issues... you are welcome to test.
ninthswat
Posts: 3
Joined: Sat Feb 07, 2026 2:04 pm

Sat Feb 07, 2026 7:37 pm

Hi, is thin supposed to be working on PVE9 using current version of plugin? We just tried it, a VM with 4TB disk took 4TB on storage.
tritonb7@gmail.com
Posts: 4
Joined: Mon Nov 10, 2025 2:22 pm

Thu Feb 12, 2026 12:16 am

I'm curious about this too. Are snapshots thin?
tritonb7@gmail.com
Posts: 4
Joined: Mon Nov 10, 2025 2:22 pm

Thu Feb 12, 2026 12:16 am

ninthswat wrote:
Sat Feb 07, 2026 7:37 pm
Hi, is thin supposed to be working on PVE9 using current version of plugin? We just tried it, a VM with 4TB disk took 4TB on storage.
Do you have any errors removing the snapshot?
yaroslav (staff)
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Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Thu Feb 12, 2026 1:18 am

Hi,

It looks like the issue might still be there. Please keep an eye on the release notes.
ninthswat
Posts: 3
Joined: Sat Feb 07, 2026 2:04 pm

Thu Feb 12, 2026 7:27 pm

Snapshots can be taken and removed, but reverting is given error.

Thin is not working as expected.

Lets wait for updated version and see how it goes.
yaroslav (staff)
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Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Thu Feb 12, 2026 8:19 pm

Yeah, sorry for misleading everyone... I was under the impression that some moves were made on our side.
Sorry again.
ninthswat
Posts: 3
Joined: Sat Feb 07, 2026 2:04 pm

Thu Feb 12, 2026 8:32 pm

Yaroslav, do you have some insiders ETA for updated plugin version?
yaroslav (staff)
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Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Fri Feb 13, 2026 7:12 am

Sorry, not really.
I hope sometime next month, but those dates move all the time. Don't want to let down another user with the ever-changing estimates.
I will set the reminder to update this thread tho.
marantz
Posts: 1
Joined: Thu Mar 26, 2026 11:19 am

Thu Mar 26, 2026 11:20 am

Any, hopefuly good, news in this topic?
yaroslav (staff)
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Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Thu Mar 26, 2026 12:07 pm

The release should be there shortly. I hope.
echo
Posts: 2
Joined: Fri Dec 05, 2025 1:52 am

Sat Mar 28, 2026 4:56 am

I did some digging and figured out why snapshot rollback is not working with the current version of the plugin. In Proxmox 9, the Proxmox devs added a volume_rollback_is_possible function to the storage plugin API. Because the Starwind plugin inherits from the LVM storage plugin, Proxmox is expecting the VM volume to be a qcow2 file (to support the snapshots-as-volume-chain feature on LVM added in Proxmox 9). To get around this, you can add the following code to /usr/share/perl5/PVE/Storage/Custom/StarLvmPlugin.pm:

sub volume_rollback_is_possible {
my ($class, $scfg, $storeid, $volname, $snap, $blockers) = @_;

return 1;
}

Then run:
systemctl restart pvedaemon

In my somewhat limited testing, I am able to take and revert snapshots of VM volumes on StarWind plugin backed storage, including snapshots with and without RAM. Obviously, we still could use an updated storage plugin that fully implements the new storage API, but I hope this is helpful to anyone in a situation similar to my own. Run this in production at your own risk.
yaroslav (staff)
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Posts: 4309
Joined: Mon Nov 18, 2019 11:11 am

Sat Mar 28, 2026 4:59 am

Thanks for your update!
I hope for a proper fix arriving shortly.
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