too many VDI/VHD per VM, how to get rid of unused ones

olivierlambert

Yes, I would do that. It means all those VDIs aren't connected to any VM. So it's very likely (except if you did something on purpose) that those VDIs are useless.

I think you get why Xen Orchestra is the de facto client for Citrix Hypervisor and XCP-ng

robert wild

@olivierlambert yes i can see now why XOA works really well with xen/xcp-ng

robert wild

mmm.... its asking me for the orphaned vm snapshots if i really want to delete them

im guessing i do?!?

olivierlambert

There's no reason to have orphaned VM snapshots

robert wild

thanks Olivier!!!!!!

now my VDI's, i see i have multiple VDI's for my VMs

for example my "dataio vm"

i have a main vm running and i have a continious replication of the dataio vm

now can i delete any of them as i seem to be just racking up multiple VDI's of the same VM

olivierlambert

Continue to remove all orphaned VDIs

robert wild

@olivierlambert but I can't see any more orphaned vdis on XOA?

olivierlambert

In the SR view, disk tab, bottom right, magnifying glass icon, select "Orphaned VDIs".

robert wild

@olivierlambert your amazing Olivier, so I imagine I can delete all the orphaned vdi's

olivierlambert

Yes, as long as you don't have intentionally left a VDI connected to no VM whatsoever, you can remove all of them.

robert wild

im looking and i see no vms attached to the orphaned disks

olivierlambert

That's by definition why are they called "orphaned" The question is: have you decided to disconnect some VDI of some VM by yourself or they just are here because they are leftover of some failed operations?

I think that in your case, you can remove them all.

robert wild

thanks Olivier because when i change the magnifying glass to "type:!VDI-unmanaged" i see under the VMs the actual live vm name and the backup vm so i think its safe to delete all the orphaned ones

olivierlambert

Yes, VDIs connected to a VM are by definition not orphaned. You don't want to remove those.

robert wild

just out of interest when i change the magnifying glass to "type:VDI-unmanaged"

it lists "base copy"

what are they?

olivierlambert

They are the read only parent of a disk (when you do a snapshot, in fact it creates 3 disks: the base copy in read only, the new active disk and the snapshot).

If you remove the snapshot, then a coalesce will appear, to merge the active disk within the base copy, and get back to the initial state: 1 disk only.

robert wild

so can i delete the "type:VDI-snapshot"

robert wild

This post is deleted!

olivierlambert

Please edit your post and use Markdown syntax for code/error blocks
Rescan your SR and try again, at worst remove everything you can, leave it a while to coalesce and wait before trying to remove it again

robert wild

vdi.delete
{
"id": "1778c579-65a5-48b3-82df-9558a4f6ff7f"
}
{
"code": "SR_BACKEND_FAILURE_1200",
"params": [
"",
"",
""
],
"task": {
"uuid": "3c72bd9a-36ec-01da-b1b5-0b19468f4532",
"name_label": "Async.VDI.destroy",
"name_description": "",
"allowed_operations": [],
"current_operations": {},
"created": "20200120T19:23:41Z",
"finished": "20200120T19:23:50Z",
"status": "failure",
"resident_on": "OpaqueRef:bb0f833a-b400-4862-9d3f-07f15f34e0f8",
"progress": 1,
"type": "<none/>",
"result": "",
"error_info": [
"SR_BACKEND_FAILURE_1200",
"",
"",
""
],
"other_config": {},
"subtask_of": "OpaqueRef:NULL",
"subtasks": [],
"backtrace": "(((process"xapi @ lon-p-xenserver01")(filename lib/backtrace.ml)(line 210))((process"xapi @ lon-p-xenserver01")(filename ocaml/xapi/storage_access.ml)(line 31))((process"xapi @ lon-p-xenserver01")(filename ocaml/xapi/xapi_vdi.ml)(line 683))((process"xapi @ lon-p-xenserver01")(filename ocaml/xapi/message_forwarding.ml)(line 100))((process"xapi @ lon-p-xenserver01")(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process"xapi @ lon-p-xenserver01")(filename ocaml/xapi/rbac.ml)(line 236))((process"xapi @ lon-p-xenserver01")(filename ocaml/xapi/server_helpers.ml)(line 83)))"
},
"message": "SR_BACKEND_FAILURE_1200(, , )",
"name": "XapiError",
"stack": "XapiError: SR_BACKEND_FAILURE_1200(, , )
at Function.wrap (/xen-orchestra/packages/xen-api/src/_XapiError.js:16:11)
at _default (/xen-orchestra/packages/xen-api/src/_getTaskResult.js:11:28)
at Xapi._addRecordToCache (/xen-orchestra/packages/xen-api/src/index.js:812:37)
at events.forEach.event (/xen-orchestra/packages/xen-api/src/index.js:833:13)
at Array.forEach (<anonymous>)
at Xapi._processEvents (/xen-orchestra/packages/xen-api/src/index.js:823:11)
at /xen-orchestra/packages/xen-api/src/index.js:984:13
at Generator.next (<anonymous>)
at asyncGeneratorStep (/xen-orchestra/packages/xen-api/dist/index.js:58:103)
at _next (/xen-orchestra/packages/xen-api/dist/index.js:60:194)
at tryCatcher (/xen-orchestra/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/xen-orchestra/node_modules/bluebird/js/release/promise.js:547:31)
at Promise._settlePromise (/xen-orchestra/node_modules/bluebird/js/release/promise.js:604:18)
at Promise._settlePromise0 (/xen-orchestra/node_modules/bluebird/js/release/promise.js:649:10)
at Promise._settlePromises (/xen-orchestra/node_modules/bluebird/js/release/promise.js:729:18)
at _drainQueueStep (/xen-orchestra/node_modules/bluebird/js/release/async.js:93:12)
at _drainQueue (/xen-orchestra/node_modules/bluebird/js/release/async.js:86:9)
at Async._drainQueues (/xen-orchestra/node_modules/bluebird/js/release/async.js:102:5)
at Immediate.Async.drainQueues (/xen-orchestra/node_modules/bluebird/js/release/async.js:15:14)
at runCallback (timers.js:810:20)
at tryOnImmediate (timers.js:768:5)
at processImmediate [as _immediateCallback] (timers.js:745:5)"
}