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Restore your computer to peak performance in minutes!
If you are getting the error code usr sbin fcppcmmap etc essmap, this guide should help.
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The actual value can be changed as follows, depending on which server needs to be restarted:
This error can occur when the Fiber Channel adapter is usually very busy. The AIX FC adapter driver attempts to map the I/O screen for DMA access to allow the FC adapter to read from or write to the buffer. DMA is allocated by a request to the PCI bus device driver.
The PCI bus device driver reports that it cannot service the request at this time. It was too quiet at the moment and often the adapter couldn’t handle all of them. When the FC adapter is built, we tell the PCI bus driver policies how much resources to allocate and it can no longer exceed the limit. It is recommended to increase max_xfer_size for Fiber Channel devices.
This depends on the type of fiber optic adapter and method, but usually the possible weights are:
This was responsible for installing new ESS driver file sets, but did not use ESS hard drives (type 2105). Checking the type of working disks is simple: If support for 2105 is not available, you can remove all ESS driver filesets: Enter the name of the cluster, and also select the time to use the nodes. It is important here that the hostnames and IP addresses are correctly listed in the /etc/hosts documentation of both nodes. Enter the IP label/address (press F4 to select one) and enter the network name (press F4 again to select a specific one). Enter the phone number of the resource group. It’s a good idea to make sure the resource group name ends with “rg” so that you can recognize it as a resource group. Also select participating nodes. For the new “rollback policy” has aThe idea was to change it to “Never back down.” This way, when a large node is added to the cluster and the resource group is running on the secondary node, you won’t see a failover from the secondary node to the primary node. Note. The order of the nodes is simply determined by the order in which you select the node here. If you enter “node01, node02” again, then “node01” will be the primary node type. If you decide to go the other way, now is a good time to get a good understanding of the node priority order. Select the resource class you created earlier and add the full IP address/service tag. Just press [ENTER] here. Resolve any issues that may result from this sync attempt. RepeatSkip this process until this validation/sync process returns “OK”. It’s a great idea to select the “Automatically fix errors” option here. Select both nodes to get started. Also make sure the cluster information daemon is running. Wait until I say that the cluster is stable and the nodes are active at the same time. In fact, at this point the cluster is ready to go. However, during the verification and synchronization phase, it will complain that there is no non-IP network. The next part is to fully configure the disk heartbeat network, which will likely allow hosts in a HACMP cluster to share disk heartbeat blocks across the SAN and on disk. We assume that you are using EMC storage. The process on other types of SAN storage is less or more accurate except for some differences, e.g. SAN drives in EMC storage are called devices and “hdiskpower” and are typically “vpath” devices on an IBM Storage san system.
