A failback scan will cause the RDAC driver to reattempt communications with any failed controllers. Now I have to deactivate the storage acces for each sr, reboot all servers, and then I’ll try to reconnect the SRs. I looked at my servers: An MPP initrd image is created, as shown in the following example:. Discovered device is not a storage array. The time, in seconds, a Busy condition is allowed for a failover is performed. The following items are examples of failover driver controller events and path failover events:.
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The following items are examples of failover driver controller events and path failover events:. The HBAs connected to a single storage array are the same model. Tried with two different servers, rrdac problem.
Error trying to insert a new volume path. There are 2 ways of using the MPP rdac driver.
Volume number exceeds the maximum configured volume number. The interval, in seconds, during mp the failover driver will check for these conditions: Error trying to determine AVT state of volume. Depending on the error and the amount of time that has elapsed, the request is retried to the current owning controller for the LUN or a failover is performed and the request sent to the alternate controller.
Quiescence wait time exceeded.
dW:Eserver:IBM System Storage:DS MPP/RDAC, amazing – IBM System Storage Forum
Incorrect open type for virtual bus pmp. Posted March 13, Place the download in a non-volatile location on the system to be installed. The RDAC failover driver includes these features:. After you apply the kernel update and start the new kernel, perform these steps to build the RDAC Initial Ram Disk image initrd image for the new kernel:.
The Above config info is needed if you want to make mkinitrd manually. Prints the version of the RDAC driver currently running on the system. Prints the maximum number of targets that can be handled by that host.
The maximum number of paths logical jpp supported per controller. Error trying to match discovered controller to existing controller. Follow, to receive updates on this topic.
Error trying to insert a new volume. Determines which errors to log. Really an annoying situation A description of each parameter follows. To show all attached and discovered volumes, type the following command and press Enter. The lsdev utility provides a map gdac your array LUNs to their Linux block devices. The total number of paths to the rrac array is the MaxPathsPerController value multiplied by the number of controllers.
Command timeout retry count exceeded. Controller unreachable without failback to current which is disabled.
[dm-devel] Multipath setup and rdac questions
The interval, in seconds, during which the failover driver will check for these conditions:. I don’t get, why I need two HBA on each server?
The host number of the HBA driver is given as an argument.
Install the new RDAC driver using the make install command. Posted April 5,