How variations of the storage failover modify command affect automatic giveback
The operation of automatic giveback depends on how you configure the parameters of the storage failover modify command.
The effects of automatic giveback parameter combinations that apply to situations other than panic
The following table lists the storage failover modify command parameters that apply to takeover events not caused by a panic:
| Parameter | Default setting |
|---|---|
| -auto-giveback true|false | true |
| -delay-seconds integer (seconds) | 600 |
| -onreboot true|false | true |
The following table describes how combinations of the -onreboot and -auto-giveback parameters affect automatic giveback for takeover events not caused by a panic:
| storage failover modify parameters used | Cause of takeover | Does automatic giveback occur? |
|---|---|---|
| -onreboot true -auto-giveback true | reboot command | Yes |
| halt command, or power cycle operation issued from the Service Processor | Yes | |
| -onreboot true -auto-giveback false | reboot command | Yes |
| halt command, or power cycle operation issued from the Service Processor | No | |
| -onreboot false -auto-giveback true | reboot command | No |
| halt command, or power cycle operation issued from the Service Processor | Yes | |
| -onreboot false -auto-giveback false | reboot command | No |
| halt command, or power cycle operation issued from the Service Processor | No |
When the -onreboot parameter is set to false, a takeover does not occur in the case of a node reboot. Therefore, automatic giveback cannot occur, regardless of whether the -auto-giveback parameter is set to true. A client disruption occurs.
The effects of automatic giveback parameter combinations that apply to panic situations
The following table lists the storage failover modify command parameters that apply to panic situations:
| Parameter | Default setting |
|---|---|
| -onpanic true|false | true |
| -auto-giveback-after-panic true|false (Privilege: Advanced) | true |
| -auto-giveback true|false | true |
The following table describes how parameter combinations of the storage failover modify command affect automatic giveback in panic situations:
| storage failover parameters used | Does automatic giveback occur after panic? |
|---|---|
| -onpanic true -auto-giveback-after-panic true | Yes |
| -onpanic true -auto-giveback-after-panic false -auto-giveback false | No |
| -onpanic false -auto-giveback-after-panic true | No |
| -onpanic false -auto-giveback-after-panic false | No |
| -onpanic true -auto-giveback true -auto-giveback-after-panic true | Yes |
| -onpanic true -auto-giveback true -auto-giveback-after-panic false | Yes |
| -onpanic true -auto-giveback false -auto-giveback-after-panic true | Yes |
| -onpanic true -auto-giveback false -auto-giveback-after-panic false | No |
| -onpanic false If -onpanic is set to false, takeover/giveback does not occur, regardless of the value set for -auto-giveback or -auto-giveback-after-panic | No |
If the -onpanic parameter is set to false, giveback does not occur. Therefore, automatic giveback cannot occur, even if the ‑auto‑giveback‑after‑panic parameter or the auto-givebackparameters are set to true. A client disruption occurs.