The system fails to start after two controllers are incorrectly removed and inserted

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[Problem Description]

The frontline engineers mistakenly remove and insert dual controllers. As a result, the startup fails.

[Symptom]

Failed to start the system. The system enters the small system.

[Cause]

The system fails to start due to dirty data loss or CCBD data loss.

Perform the following steps only for the initial power-on device or deployment device.

[Locating Method]

Enter the user name and password to log in to the storage CLI (user name: Admin; Default password: Admin@storage) and run the minisystem command as prompted to enter the minisystem system.

[Solution]

1.Run the showsystrace and showsystrace 2 commands in the main control minisystem system,

2.If FAIL ACTION is CheckRecovDirtyData,, as shown in the following figure, run the sys.sh cleardirtydataflag command and then run the rebootsys command to restart the system.

144134imyya5zhayh5yu51.png?image.png

3.If FAIL ACTION is NtfClsUtil(CCDB/DLM/C-CLS), as shown in the following figure, run the following commands on node 0:

ccdb.sh -c setccdbdirtyflag 0 0 1

ccdb.sh -c setccdbdirtyflag 0 1 2

Then, run the rebootsys command on the two controllers to restart the system.144300klpbeeooumepmumm.png?image.png

4.After you run the rebootsys command to restart the system, wait for more than 30 minutes and log in to the storage CLI. If the system still prompts you to enter the minisystem system, proceed with subsequent operations. If you can log in to the storage system, run the show controller general command to query the controller status, as shown in the following figure. If the status is normal, otherwise, go to step 5.

144323kfm45651hz7zj6vw.png?image.png

5.Run the sys.sh showflowtrace command to check the cluster status. The failure cause is as follows: RecoverDirtyDta:FreeVnodeLock.

144347hwt5j5f63b6ttpt4.png?image.png

Run the following command to clear vnode, and then run the rebootsys command on both controllers to reset dual controllers:

sys.sh clearvnodedirtydataflag 0

sys.sh clearvnodedirtydataflag 1



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