Sometimes a volume detach will not complete and volume will be undeletable

[David Hill]

Sometimes a volume detach will not complete and volume will be undeletable . The state is "in-use" but it's no longer attached to the VM and the VM no longer exists.

We're using Icehouse 2014.1.2

    [root@stv-lab-ctrl02 monitoring_aux]# cinder list
    +--------------------------------------+--------+----------------------------------------------------+------+-------------+----------+-------------+
    | ID | Status | Display Name | Size | Volume Type | Bootable | Attached to |
    +--------------------------------------+--------+----------------------------------------------------+------+-------------+----------+-------------+
    | 64890ec4-9847-4074-ad89-15ec93983ab3 | in-use | monitoring-stv-lab-ctrl02_-DataVolume-xfiepunaoqsc | 1 | None | false | |
    +--------------------------------------+--------+----------------------------------------------------+------+-------------+----------+-------------+
    # cinder delete 64890ec4-9847-4074-ad89-15ec93983ab3
    Delete for volume 64890ec4-9847-4074-ad89-15ec93983ab3 failed: Invalid volume: Volume status must be available or error,
    but current status is: in-use (HTTP 400) (Request-ID: req-8fdc62a9-62b3-4bbd-ac0b-04cfc89c3ad5)
    ERROR: Unable to delete any of the specified volumes.

[David Hill (david-hill-ubisoft)]

Some workaround
1) cinder reset-state
2) cinder delete

The problem is that with heat, when this happens, the stack will fail to delete. In order to solve this issue, the following workaround will do:
1) cinder reset-state
2) cinder delete
3) nova delete
4) heat stack-delete

But in a production environment, when reset-state can only be done by an admin, it could be a show stopper.

Dve

[David Hill (david-hill-ubisoft)]

This bug also affects Havana.

[Thang Pham (thang-pham)]

"cinder reset-state" was create for such scenarios. I am not sure this can be fixed.

[Jay Bryant (jsbryant)]

I am in agreement with Thang. There are many reasons that a volume attach can fail. The reset-state command is designed to let the user get back to a state where they can clean up and debug what went wrong.

I think this is invalid.