@RobWhalley I think in the beginning i had that option enabled in my backup jobs, but found it was a hassle to move VMs between hosts with it on so i turned it off for all backups. Might be why my jobs worked because i had already done that switch in the past.

posted in the other thread as well but Xen Orchestra, commit 1a7b5 backups are working again. I tested configure and vm backups. They are being backup to NFS share.

scratch that prior comment. My backups are all setup as delta backup with schedule 2nd run that forces full backup. So i believe both are working correctly.

if you can also try deleting all the backup snapshots of the VMs in the backup and running full backup then the delta backup jobs.

@RobWhalley I think in the beginning i had that option enabled in my backup jobs, but found it was a hassle to move VMs between hosts with it on so i turned it off for all backups. Might be why my jobs worked because i had already done that switch in the past.

scratch that prior comment. My backups are all setup as delta backup with schedule 2nd run that forces full backup. So i believe both are working correctly.

if you can also try deleting all the backup snapshots of the VMs in the backup and running full backup then the delta backup jobs.

@RobWhalley lol i forgot to test deltas - let me see on that.

@RobWhalley Okay you have similar setup to me then. Can you confirm NFS share for backup is working and enabled?
it under settings -->Remote

Make sure the enabled is green and try clicking on the test icon in far right.

@RobWhalley I see in the error it mentioning NDB, do your backups have that enabled?

can you try disabling it and testing backup if you do have it on? I think i saw someone else post issue with NDB code in the forums.

@RobWhalley to see if it's behaving the same as what I saw on prior versions can you do the following steps?

1. open tasks in a new browser window so you can monitor it. If you can keep the backup window and task window side by side you can see if the export command comes and goes quickly.
   1.a If you go between backup and tasks in the same window, ive noticed the prior task history clears out.

2. ssh into the VM running XO and monitor the syslog
   tail -100f /var/log/syslog
   #may need root then try sudo tail -100f /var/log/syslog

3. In primary window kick off a backup then watch the task window to see if export command comes and goes.
   

4. If the task disappears then click on previous tasks and see if you even had export command come up.

5. reply with the results of how task shows export step and any errors in the syslog file.

Hopefully that helps the devs figure out whats going on in your system.

@RobWhalley did you try to restart the service or reboot the server running XO? I have a nightly crontab job that updates the OS, updates XO and then reboots the server.

looks like Xen Orchestra, commit fcefa might have fixed the backup issue. I am running a backup test now and it showing export step running

@itservices
also the same with Xen Orchestra, commit 2effd

I got this from the syslog file. some error are showing up when i ran backup job.

2025-06-27T09:40:56.178745-04:00 xen xo-server[2283]: (node:2283) [DEP0044] DeprecationWarning: The `util.isArray` API is deprecated. Please use `Array.isArray()` instead.
2025-06-27T09:40:56.178843-04:00 xen xo-server[2283]: (Use `node --trace-deprecation ...` to show where the warning was created)
2025-06-27T09:40:56.182409-04:00 xen xo-server[2283]: 2025-06-27T13:40:56.178Z xo:xo-server WARN Node warning {
2025-06-27T09:40:56.182468-04:00 xen xo-server[2283]:   error: DeprecationWarning: The `util.isArray` API is deprecated. Please use `Array.isArray()` instead.
2025-06-27T09:40:56.182496-04:00 xen xo-server[2283]:       at IncomingMessage.flash (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/connect-flash/lib/flash.js:67:16)
2025-06-27T09:40:56.182526-04:00 xen xo-server[2283]:       at file:///opt/xo/xo-builds/xen-orchestra-202506270848/packages/xo-server/src/index.mjs:322:11
2025-06-27T09:40:56.182552-04:00 xen xo-server[2283]:       at Layer.handle [as handle_request] (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/layer.js:95:5)
2025-06-27T09:40:56.182580-04:00 xen xo-server[2283]:       at trim_prefix (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:328:13)
2025-06-27T09:40:56.182603-04:00 xen xo-server[2283]:       at /opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:286:9
2025-06-27T09:40:56.182633-04:00 xen xo-server[2283]:       at Function.process_params (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:346:12)
2025-06-27T09:40:56.182656-04:00 xen xo-server[2283]:       at next (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:280:10)
2025-06-27T09:40:56.182679-04:00 xen xo-server[2283]:       at Xo._handleHttpRequest (file:///opt/xo/xo-builds/xen-orchestra-202506270848/packages/xo-server/src/xo.mjs:173:7)
2025-06-27T09:40:56.182704-04:00 xen xo-server[2283]:       at Layer.handle [as handle_request] (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/layer.js:95:5)
2025-06-27T09:40:56.182744-04:00 xen xo-server[2283]:       at trim_prefix (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:328:13)
2025-06-27T09:40:56.182767-04:00 xen xo-server[2283]:       at /opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:286:9
2025-06-27T09:40:56.182822-04:00 xen xo-server[2283]:       at Function.process_params (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:346:12)
2025-06-27T09:40:56.182845-04:00 xen xo-server[2283]:       at next (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:280:10)
2025-06-27T09:40:56.182883-04:00 xen xo-server[2283]:       at initialize (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/passport/lib/middleware/initialize.js:98:5)
2025-06-27T09:40:56.182907-04:00 xen xo-server[2283]:       at Layer.handle [as handle_request] (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/layer.js:95:5)
2025-06-27T09:40:56.182945-04:00 xen xo-server[2283]:       at trim_prefix (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:328:13)
2025-06-27T09:40:56.182970-04:00 xen xo-server[2283]:       at /opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:286:9
2025-06-27T09:40:56.182994-04:00 xen xo-server[2283]:       at Function.process_params (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:346:12)
2025-06-27T09:40:56.183018-04:00 xen xo-server[2283]:       at next (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:280:10)
2025-06-27T09:40:56.183041-04:00 xen xo-server[2283]:       at urlencodedParser (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/body-parser/lib/types/urlencoded.js:94:7)
2025-06-27T09:40:56.183072-04:00 xen xo-server[2283]:       at Layer.handle [as handle_request] (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/layer.js:95:5)
2025-06-27T09:40:56.183105-04:00 xen xo-server[2283]:       at trim_prefix (/opt/xo/xo-builds/xen-orchestra-202506270848/node_modules/express/lib/router/index.js:328:13) {
2025-06-27T09:40:56.183136-04:00 xen xo-server[2283]:     code: 'DEP0044'
2025-06-27T09:40:56.183166-04:00 xen xo-server[2283]:   }
2025-06-27T09:40:56.183212-04:00 xen xo-server[2283]: }
2025-06-27T09:41:16.131076-04:00 xen xo-server[2352]: 2025-06-27T13:41:16.129Z xo:backups:worker INFO starting backup
2025-06-27T09:41:16.842684-04:00 xen xo-server[2352]: 2025-06-27T13:41:16.842Z xo:backups:MixinBackupWriter INFO deleting temporary VHD {
2025-06-27T09:41:16.842762-04:00 xen xo-server[2352]:   path: '/xo-vm-backups/4b999d5b-6bbf-78b5-93f2-83747c879be6/vdis/79a021e6-9637-40f0-871f-ab122f104d65/9aa754da-084f-4cc3-a494-2de58e17387c/.20250627T130633Z.vhd'
2025-06-27T09:41:16.842806-04:00 xen xo-server[2352]: }
2025-06-27T09:41:16.843337-04:00 xen xo-server[2352]: 2025-06-27T13:41:16.843Z xo:backups:MixinBackupWriter INFO deleting temporary VHD {
2025-06-27T09:41:16.843372-04:00 xen xo-server[2352]:   path: '/xo-vm-backups/1c29eb9f-5b4b-2a63-dee2-47b738701058/vdis/79a021e6-9637-40f0-871f-ab122f104d65/a48c797e-39b2-4d9a-84a1-d4323436430f/.20250627T130627Z.vhd'
2025-06-27T09:41:16.843415-04:00 xen xo-server[2352]: }
2025-06-27T09:41:16.847122-04:00 xen xo-server[2352]: 2025-06-27T13:41:16.846Z xo:backups:MixinBackupWriter INFO deleting unused VHD {
2025-06-27T09:41:16.847160-04:00 xen xo-server[2352]:   path: '/xo-vm-backups/4b999d5b-6bbf-78b5-93f2-83747c879be6/vdis/79a021e6-9637-40f0-871f-ab122f104d65/9aa754da-084f-4cc3-a494-2de58e17387c/.20250627T130633Z.vhd'
2025-06-27T09:41:16.847178-04:00 xen xo-server[2352]: }
2025-06-27T09:41:16.847260-04:00 xen xo-server[2352]: 2025-06-27T13:41:16.847Z xo:backups:MixinBackupWriter INFO deleting unused VHD {
2025-06-27T09:41:16.847311-04:00 xen xo-server[2352]:   path: '/xo-vm-backups/1c29eb9f-5b4b-2a63-dee2-47b738701058/vdis/79a021e6-9637-40f0-871f-ab122f104d65/a48c797e-39b2-4d9a-84a1-d4323436430f/.20250627T130627Z.vhd'
2025-06-27T09:41:16.847334-04:00 xen xo-server[2352]: }
2025-06-27T09:41:18.829536-04:00 xen xo-server[2352]: 2025-06-27T13:41:18.828Z xo:backups:worker WARN possibly unhandled rejection {
2025-06-27T09:41:18.829591-04:00 xen xo-server[2352]:   error: TypeError: this.source.readBlock is not a function
2025-06-27T09:41:18.829612-04:00 xen xo-server[2352]:       at XapiDiskSource.readBlock (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/DiskPassthrough.mjs:70:28)
2025-06-27T09:41:18.829627-04:00 xen xo-server[2352]:       at XapiDiskSource.buildDiskBlockGenerator (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/Disk.mjs:69:28)
2025-06-27T09:41:18.829642-04:00 xen xo-server[2352]:       at buildDiskBlockGenerator.next (<anonymous>)
2025-06-27T09:41:18.829658-04:00 xen xo-server[2352]:       at XapiDiskSource.diskBlocks (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/Disk.mjs:27:39)
2025-06-27T09:41:18.829673-04:00 xen xo-server[2352]:       at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
2025-06-27T09:41:18.829687-04:00 xen xo-server[2352]:       at async Promise.all (index 0)
2025-06-27T09:41:18.829705-04:00 xen xo-server[2352]: }
2025-06-27T09:41:27.192451-04:00 xen xo-server[2352]: 2025-06-27T13:41:27.192Z xo:backups:worker WARN possibly unhandled rejection {
2025-06-27T09:41:27.192549-04:00 xen xo-server[2352]:   error: TypeError: this.source.readBlock is not a function
2025-06-27T09:41:27.192576-04:00 xen xo-server[2352]:       at XapiDiskSource.readBlock (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/DiskPassthrough.mjs:70:28)
2025-06-27T09:41:27.192606-04:00 xen xo-server[2352]:       at XapiDiskSource.buildDiskBlockGenerator (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/Disk.mjs:69:28)
2025-06-27T09:41:27.192627-04:00 xen xo-server[2352]:       at buildDiskBlockGenerator.next (<anonymous>)
2025-06-27T09:41:27.192657-04:00 xen xo-server[2352]:       at XapiDiskSource.diskBlocks (file:///opt/xo/xo-builds/xen-orchestra-202506270848/@xen-orchestra/disk-transform/dist/Disk.mjs:27:39)
2025-06-27T09:41:27.192686-04:00 xen xo-server[2352]:       at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
2025-06-27T09:41:27.192715-04:00 xen xo-server[2352]:       at async Promise.all (index 0)
2025-06-27T09:41:27.192750-04:00 xen xo-server[2352]: }