Running xe from XOA

KPS

Hi!

I want to schedule some maintenance processes on XCP-ng - e.g. an automatic trim on my storage.

Is there any option to schedule from XOA, or is it the only way to do this on the XCP-host itself?

The task, I want to schedule is:

xe host-call-plugin plugin=trim host-uuid=$hostuuid fn=do_trim args:sr_uuid=$sruuid

Thank you and best wishes
KPS

olivierlambert

XO CLI can probably do that already. We can add it to the REST API also, for convenience.

KPS

@olivierlambert
Sounds good! Currently, I cannot find any trim-options in xo-cli, but that would be great. Currently, my workaround was a crontab-entry on the host:

for sruuid in $(xe sr-list type=lvmoiscsi | grep uuid | awk '{print $5}'); do sleep 10 && /opt/xensource/bin/xe host-call-plugin plugin=trim host-uuid=$(xe host-list name-label=$(hostname) | grep uuid | awk '{print $5}') fn=do_trim args:sr_uuid=$sruuid; done

olivierlambert

If you can do it in the UI, then you can do it with the CLI, since it's calling the same component in the end (xo-server)

KPS

@olivierlambert
There is a "reclaim free disk space" button in the GUI, but I am getting with latest XOA stable:

sr.reclaimSpace
{
  "id": "xxxxx-xxxxx-xxxxx-xxxxx"
}
{
  "code": "UnsupportedSRForTrim",
  "message": "Trim on [xxxxx-xxxxx-xxxxx-xxxxx] not supported",
  "name": "Error",
  "stack": "Error: Trim on [xxxxx-xxxxx-xxxxx-xxxxx] not supported
    at Xapi.reclaimSpace (file:///usr/local/lib/node_modules/xo-server/node_modules/@xen-orchestra/xapi/sr.mjs:159:19)
    at Xo.reclaimSpace (file:///usr/local/lib/node_modules/xo-server/src/api/sr.mjs:966:3)
    at Api.#callApiMethod (file:///usr/local/lib/node_modules/xo-server/src/xo-mixins/api.mjs:445:20)"
}

olivierlambert

You are trying to trim a SR that doesn't support it. Trim is only for block based SR.

KPS

@olivierlambert
Sorry about that! I did click on the wrong SR...

Can you tell me the cli-command to start the trim to schedule it? I did not find it in the xo-cli manpage.

olivierlambert

Use xo-cli --list-commands to see all the available commands If you grep on reclaim or trim, you should fine what you need

KPS

@olivierlambert
Thank you. I was searching for trim (only).

sr.reclaimSpace seems to be the one

olivierlambert

Nice! Let us know if you want it to be added on the REST API