<![CDATA[Backup fails with "VM_HAS_VUSBS" error]]>Last night I pushed my last VM off of esxi.

That particular machine has a pass through USB device. I made a backup routine for it this morning and get this message when I try to run it.

 Snapshot
Start: Jan 12, 2024, 01:17:18 PM
End: Jan 12, 2024, 01:17:18 PM
Error: VM_HAS_VUSBS(OpaqueRef:695bb7f4-88f2-1670-63dc-6110b9c479ad)This is a XenServer/XCP-ng error

Start: Jan 12, 2024, 01:17:18 PM
End: Jan 12, 2024, 01:17:19 PM
Duration: a few seconds
Error: VM_HAS_VUSBS(OpaqueRef:695bb7f4-88f2-1670-63dc-6110b9c479ad)This is a XenServer/XCP-ng error

I saw one similar problem with someone a while back. Is there a work around?

]]>https://xcp-ng.org/forum/topic/8204/backup-fails-with-vm_has_vusbs-errorRSS for NodeSun, 07 Jun 2026 13:41:48 GMTFri, 12 Jan 2024 18:21:34 GMT60<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Thu, 27 Feb 2025 01:06:38 GMT]]>Yes, so for that to be done automatically, you can set up "offline backup" option, that will do exactly that 🙂

]]>https://xcp-ng.org/forum/post/90247https://xcp-ng.org/forum/post/90247Thu, 27 Feb 2025 01:06:38 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Thu, 27 Feb 2025 01:02:01 GMT]]>@olivierlambert so is the only option to:

  1. power off the VM
  2. backup
  3. power on the VM

If that's the case, I might just make another VM for the VUSB to attach to.

]]>https://xcp-ng.org/forum/post/90246https://xcp-ng.org/forum/post/90246Thu, 27 Feb 2025 01:02:01 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Thu, 27 Feb 2025 00:57:56 GMT]]>Ah yes, I remember now. You cannot reconnect a vUSB after disconnect. That's a XAPI/XCP-ng limitation.

]]>https://xcp-ng.org/forum/post/90245https://xcp-ng.org/forum/post/90245Thu, 27 Feb 2025 00:57:56 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Thu, 27 Feb 2025 00:36:50 GMT]]>@olivierlambert It doesn't seem to be done automatically yet, as I'm using 8.3 (up to date) and XOA commit 749f0 from 5 days ago.

I would love for this to get added. I looked into simply doing this with a cronjob (disconnect/reconnect VUSB before/after the backup jobs occur), but it seems that there is no command to simply reconnect the VUSB without performing a reboot. I'd really rather not need to reboot this VM with high regularity.

]]>https://xcp-ng.org/forum/post/90243https://xcp-ng.org/forum/post/90243Thu, 27 Feb 2025 00:36:50 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Wed, 26 Feb 2025 13:27:02 GMT]]>I can't remember if it's in our backlog or if it's already done automatically

]]>https://xcp-ng.org/forum/post/90194https://xcp-ng.org/forum/post/90194Wed, 26 Feb 2025 13:27:02 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Tue, 25 Feb 2025 01:16:19 GMT]]>@olivierlambert Sorry to resurrect an old subject, but I just started to have this issue myself. I have a VM running nut with a VUSB connected to my UPS. I snapshot weekly, so the odds of a snapshot occurring during a power outage are quite low, so I have no problem with disconnecting/reconnecting in order to take a snapshot. It's a small price to pay to be able to automate the snapshot process.

]]>https://xcp-ng.org/forum/post/90128https://xcp-ng.org/forum/post/90128Tue, 25 Feb 2025 01:16:19 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 22:41:59 GMT]]>@Danp said in Backup fails with "VM_HAS_VUSBS" error:

@olivierlambert Could this be added as an option under the backup's Advanced settings area?

Probably, just taking care of telling people it will unplug the device for few seconds.

]]>https://xcp-ng.org/forum/post/69547https://xcp-ng.org/forum/post/69547Fri, 12 Jan 2024 22:41:59 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 21:53:51 GMT]]>@archw I do not envy you for being stuck on using USB serial keys.... ugh...

That has to be some OLD software

]]>https://xcp-ng.org/forum/post/69546https://xcp-ng.org/forum/post/69546Fri, 12 Jan 2024 21:53:51 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 21:52:12 GMT]]>@Danp
80 to 84! Building science...never saw Bo but Lionel "Little Train" James was in the class I went to (he was leaving as I was walking in...nice dude!!!).

]]>https://xcp-ng.org/forum/post/69545https://xcp-ng.org/forum/post/69545Fri, 12 Jan 2024 21:52:12 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 21:38:53 GMT]]>@archw I was there from 83 - 85. I can recall standing in line behind Bo to sign up for classes. 😏

]]>https://xcp-ng.org/forum/post/69544https://xcp-ng.org/forum/post/69544Fri, 12 Jan 2024 21:38:53 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 20:32:24 GMT]]>@Danp
Not a bad idea!

(I was Junior when Bo Jackson got there:) )

]]>https://xcp-ng.org/forum/post/69543https://xcp-ng.org/forum/post/69543Fri, 12 Jan 2024 20:32:24 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 19:58:50 GMT]]>@archw Years ago we used a device to convert a serial port into an IP connection. I wonder if you could do something similar where the actual USB dongle wasn't even attached to your XCP-ng host. 🤔

WDE!!

]]>https://xcp-ng.org/forum/post/69542https://xcp-ng.org/forum/post/69542Fri, 12 Jan 2024 19:58:50 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 19:27:46 GMT]]>@Danp
In the real world, FWIW department, the usb is a software protection device that works with some architectural software we use.

BTW...based on your icon for your name...WDE!!!

]]>https://xcp-ng.org/forum/post/69539https://xcp-ng.org/forum/post/69539Fri, 12 Jan 2024 19:27:46 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 19:21:10 GMT]]>@olivierlambert Could this be added as an option under the backup's Advanced settings area?

]]>https://xcp-ng.org/forum/post/69538https://xcp-ng.org/forum/post/69538Fri, 12 Jan 2024 19:21:10 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 18:50:58 GMT]]>Ideally, we should probably detect this error message, unplug, backup and re-plug automagically. However, I'm afraid this could trigger a surprise if you are doing a backup while actively using the USB device 🤔

]]>https://xcp-ng.org/forum/post/69537https://xcp-ng.org/forum/post/69537Fri, 12 Jan 2024 18:50:58 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 18:49:06 GMT]]>@olivierlambert
10-4

]]>https://xcp-ng.org/forum/post/69536https://xcp-ng.org/forum/post/69536Fri, 12 Jan 2024 18:49:06 GMT<![CDATA[Reply to Backup fails with "VM_HAS_VUSBS" error on Fri, 12 Jan 2024 18:44:28 GMT]]>Hi!

IIRC, you can't directly backup a running VM while an USB device is attached. The workaround is to detach the device, backup then re-attach. I vaguely remember a discussion around this few years ago, but I don't get all the details.

]]>https://xcp-ng.org/forum/post/69533https://xcp-ng.org/forum/post/69533Fri, 12 Jan 2024 18:44:28 GMT