# Linstor property on Openstack volume types

**URL:** <https://forums.linbit.com/t/linstor-property-on-openstack-volume-types/1225>\
**Category:** LINBIT SDS Integrations\
**Tags:** drbd\
**Created:** [June 6, 2026, 1:29pm UTC](https://forums.linbit.com/t/linstor-property-on-openstack-volume-types/1225 "2026-06-06T13:29:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![joalmodo](https://avatars.discourse-cdn.com/v4/letter/j/3e96dc/32.png) [@joalmodo](https://forums.linbit.com/u/joalmodo)\
**Post date:** [June 6, 2026, 1:29pm UTC](https://forums.linbit.com/t/linstor-property-on-openstack-volume-types/1225/1 "2026-06-06T13:29:48Z")

</div>

Hi, in a openstack cloud with LINSTOR, i want to create a volume type with the linstor property “DrbdOptions/Disk/al-extents” set to 6007. This is what shows in openstack volume type section:

```bash
volume_backend_name	linstor-drbd
linstor:redundancy	2
linstor:storage_pool	cinder-pool
linstor:property:DrbdOptions:Disk:al-extents	6007

```

This is the actual /etc/cinder/cinder.conf file:

```auto
[linstor-drbd]
volume_driver = cinder.volume.drivers.linstordrv.LinstorDrbdDriver
volume_backend_name = linstor-drbd
max_over_subscription_ratio = 1.5
thin_provisioning_support = True
linstor_uris = linstor://10.0.10.10,linstor://10.0.10.11,linstor://10.0.10.12

```

When i create a volume from this volume type, i see that the corresponding resource group gets created with property set:

```auto
~$ linstor resource-group l
╭──────────────────────────────────────────────────────────────────────────────
┊ ResourceGroup ┊ SelectFilter ┊ VlmNrs ┊ Properties ┊ Description ┊
╞═════════════════
┊ DfltRscGrp ┊ PlaceCount: 2 ┊ ┊ ┊ ┊
╞┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
┊ cinder-79ab6d3a-114e-46a4-9764-2deb3f40dc36 ┊ PlaceCount: 2 ┊ 0 ┊ DrbdOptions/Disk/al-extents=6007 ┊ For volume type "linstor-2-repl-tuned" ┊

```

But the resource-definition for the volume created does not have the property set:

```auto
(kolla-venv) nodo1:~$ linstor resource-definition lp volume-f45d9962-d1c2-4b52-ab63-56ac267514e5
╭─────────────────────────────────────────────────╮
┊ Key ┊ Value ┊
╞═════════════════════════════════════════════════╡
┊ DrbdOptions/Net/allow-two-primaries ┊ yes ┊
┊ DrbdOptions/Resource/quorum ┊ off ┊
┊ DrbdOptions/auto-verify-alg ┊ crct10dif ┊

$(kolla-venv) nodo1:~$ linstor resource-definition l
╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
┊ ResourceName ┊ ResourceGroup ┊ Layers ┊ State ┊
════════════════╡
┊ volume-f45d9962-d1c2-4b52-ab63-56ac267514e5 ┊ cinder-79ab6d3a-114e-46a4-9764-2deb3f40dc36 ┊ DRBD,STORAGE ┊ ok ┊
╰──────────────────────────────────────────────────────────────────────────────

(kolla-venv) @nodo1:~$ openstack volume list
+--------------------------------------+------+--------+------+--------------------------------+
| ID | Name | Status | Size | Attached to |
+--------------------------------------+------+--------+------+--------------------------------+
| f45d9962-d1c2-4b52-ab63-56ac267514e5 | | in-use | 2 | Attached to test5 on /dev/vda |
+--------------------------------------+------+--------+------+--------------------------------+

```

Why is that happening? Is a problem from the driver? I’m using 2.0.0 version of Linstor driver.

---

<div class="post-metadata">

**Author:** ![wanzenbug](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/wanzenbug/32/39_2.png) [@wanzenbug](https://forums.linbit.com/u/wanzenbug)\
**Post date:** [August 28, 2026, 7:20am UTC](https://forums.linbit.com/t/linstor-property-on-openstack-volume-types/1225/2 "2026-08-28T07:20:48Z")

</div>

The property is likely working as expected. The resource-definition will only show properties that get set for that resource-definition only. Anything inherited from the RG will not show up. There had been plans to somehow show these properties (and where they are inherited from), but I don’t think this went anywhere.

So you may want to check the generated DRBD configuration directly `cat /var/lib/linstor.d/volume-f45d9962-d1c2-4b52-ab63-56ac267514e5.res`, if it has the expected al-extents.