Failed to change offering of ROOT volume on VMware

[weizhouapache]

problem

the power_state is not update immediately when vm is stopped, which cause an issue when change offering of ROOT volume on VMware.

resizing volume works well.

Steps to reproduce the issue:

• create a vm and start it on VMware

mysql> select id,name,uuid,state,power_state,power_state_update_time,host_id,last_host_id from vm_instance where id=7;
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
| id | name     | uuid                                 | state   | power_state | power_state_update_time | host_id | last_host_id |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
|  7 | test-wei | 07618433-1617-4ca6-869a-b8abbe4a3db6 | Running | PowerOn     | 2026-05-27 07:28:43     |       1 |            1 |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
1 row in set (0.00 sec)

• stop the vm, the state is updated, but power_state is still PowerOn

mysql> select id,name,uuid,state,power_state,power_state_update_time,host_id,last_host_id from vm_instance where id=7;
+----+----------+--------------------------------------+----------+-------------+-------------------------+---------+--------------+
| id | name     | uuid                                 | state    | power_state | power_state_update_time | host_id | last_host_id |
+----+----------+--------------------------------------+----------+-------------+-------------------------+---------+--------------+
|  7 | test-wei | 07618433-1617-4ca6-869a-b8abbe4a3db6 | Stopping | PowerOn     | 2026-05-27 07:28:43     |       1 |            1 |
+----+----------+--------------------------------------+----------+-------------+-------------------------+---------+--------------+
1 row in set (0.00 sec)

mysql> select id,name,uuid,state,power_state,power_state_update_time,host_id,last_host_id from vm_instance where id=7;
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
| id | name     | uuid                                 | state   | power_state | power_state_update_time | host_id | last_host_id |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
|  7 | test-wei | 07618433-1617-4ca6-869a-b8abbe4a3db6 | Stopped | PowerOn     | 2026-05-27 07:28:43     |    NULL |            1 |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+
1 row in set (0.00 sec)

• change the disk offering of the ROOT volume

got an exception

• retry when the power_state is updated to PowerOff, it worked

mysql> select id,name,uuid,state,power_state,power_state_update_time,host_id,last_host_id,update_time from vm_instance where id=7;
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+---------------------+
| id | name     | uuid                                 | state   | power_state | power_state_update_time | host_id | last_host_id | update_time         |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+---------------------+
|  7 | test-wei | 07618433-1617-4ca6-869a-b8abbe4a3db6 | Stopped | PowerOff    | 2026-05-27 11:24:43     |    NULL |            1 | 2026-05-27 11:24:12 |
+----+----------+--------------------------------------+---------+-------------+-------------------------+---------+--------------+---------------------+
1 row in set (0.00 sec)

versions

ACS 4.22.0.0
VMware 8

it should impact other versions too

The steps to reproduce the bug

...

What to do about it?

No response

[DaanHoogland]

@weizhouapache is this vmware 8 only, i.e. when you say "should impact other versions too” is this ACS only or vmware as well?

[weizhouapache]

@weizhouapache is this vmware 8 only, i.e. when you say "should impact other versions too” is this ACS only or vmware as well?

I think the VMware version does not matter
the error comes from the ACS mgmt server, before sending the command to VMware.

it should impact other ACS versions too

[DaanHoogland]

But do you agree the root issue is the powerstate not being updated, is it? Not the error on change offering.

[weizhouapache]

But do you agree the root issue is the powerstate not being updated, is it? Not the error on change offering.

I think it is good that the powerstate is updated when mgmt server receives the vm states from agent (kvm or vmware).

the root cause is, changing offering for root volume should NOT rely on the power state as it is NOT the real-time state of VM. Instead, similar to all other vm/volume operations, it should rely on the VM state (Stopped, not power state/PowerOff).

the fix could be just 1 line of code change