\Welcome to Dell Technologies Connectrix Brocade B-Series - Break fix videos How to clear switch errors when a “Fabric is busy” or “failed to commit changes to Fabric” seen when trying to enable a zone config. Reference: Dell Knowledge Article Number 476269 and 347569.
This video was created to demonstrate how to resolve the indicated and highlighted error messages when making any zoning changes. When updates to the zoning database are being made by multiple users, Fabric OS warns the user about the situation and allows admin to choose which operation will prevail.
The error message will be encountered when duplicate zoning sessions are open at the same time. In most cases, a zoning transaction has timed out and the Fabric will no longer allow changes to be made to the active zone config. Indicated errors will be seen.
When this error is seen, the corresponding message will be seen in errdump on switch CLI. What does this message mean? Probable cause: Indicates that a zoning change operation is not allowed because the zoning transaction is opened by another task.
Indicates concurrent modification of the zone database by multiple administrators. Recommended action: Wait until the previous transaction is completed.
Verify that only one administrator is working with the zone database at a time. When concurrent zone transactions are open at the same time, an error message will be displayed.
We can get the information about current zoning transaction by using the command cfgtransshow. To display the current transaction and a list of domains with open transactions, use the command cfgtransshow --open trans. Make a note of transaction ID (in the above example it is 7328) and abort the current transaction without committing it.
Log in to the switch CLI with a user having administrative privileges. Let us create aliases with the names alias1 and alias2. Now create a zone with the name testzone1 and add the members alias1 and alias2.
To demonstrate concurrent modifications of the zone database by multiple administrators, open a duplicate zoning session to the same switch and try to create a new zone with the name testzone2. Error message: trans_begin. There is an outstanding transaction and you are not the owner of that transaction.
This is because concurrent modification of zone database done by multiple administrators. Look for corresponding event in errdump. To show any zoning transactions pending on the Fabric, and the list of domains with open transaction, run the command cfgtransshow --opentrans. This is the current open transaction and it is abortable.
Abort the current zoning transaction using the command cfgtransabort and then token ID. Verify using the command cfgtransshow --opentrans.
There is no outstanding zoning transaction. We can now successfully make a zoning change. Important notes: If the transaction shows as “not abortable,” the abort must be done from the switch where the transaction was made from. On the switch where the zoning has been initiated from the admin, the following error will be seen.
The domain ID is the ID of the switch where the transaction has been held. If clearing the transaction still does not get rid of the “Fabric busy” or “failed to commit changes to fabric” error messages, hareboot can be run on a single unit switch or hafailover on a director switch to attempt to clear the stuck transaction.
If that also does not work to free up the error messages, a physical reboot of the switch may be required to clear the transaction. Refer to the following for more information.
Thank you for watching.
