Steps To Fix Usr Sbin Fcppcmmap Etc. Essmap Issues

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    If you are getting the error code usr sbin fcppcmmap etc essmap, this guide should help.

    # lsattr -El fcsX -a max_xfer_size

    max_xfer_size 0x100000 Maximum transfer size True

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  • The actual value can be changed as follows, depending on which server needs to be restarted:

    # chdev -l fcsX -a max_xfer_size=0x1000000 -P

    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.

    error usr sbin fcppcmmap etc essmap

    This depends on the type of fiber optic adapter and method, but usually the possible weights are:

    Method error (/usr/lib/methods/fcmap >> /var/adm/essmap.out): 0514-023 You do not have the device listedv developed device configuration database.

    error usr sbin fcppcmmap etc essmap

    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:

    # lsdev -disk copy | group 2105

    If support for 2105 is not available, you can remove all ESS driver filesets:

    # installp -u ibm2105.rte ibmpfe.essutil.rte

  • Have the IP addresses and hosting provider names of both nodes and compare them to the IP service tag. Add all of this to the /etc/hosts files on both nodes of the new HACMP cluster.
  • Make sure the HACMP package is installed on both nodes. Just apply all the filesets from the HACMP CD and you’ll be fine.
  • Make sure you have easy access to /etc/inittab in (as in one of the previous entries):clinit:a:wait:/bin/touch /usr/es/sbin/cluster/.telinit
  • If you are using EMC SAN storage, make sure your hard drives are properly mapped to hdiskpower hardware. Or, if you are using this mksysb image, you can follow this EMC ODM cleanup procedure.
  • Createe exact cluster and its nodes:# Smitty akmpAdditional initialization, default configurationConfiguring the HACMP Cluster and Host

    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.

  • Create an IP company label:# Smitty akmpInitialization and default configurationSet up resources to make them highly availableConfiguring Service IP Labels/AddressesAdd label/IP address to service

    Enter the IP label/address (press F4 to select one) and enter the network name (press F4 again to select a specific one).

  • Set up a resource group:# Smitty akmpInitialization and default configurationConfiguring HACMP GroupsAdd a resource to a resource group

    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.

  • Add this service to the ip/label utility group:# Smitty akmpInitialization and default configurationConfiguring HACMP Resource GroupsEdit/view resources in your resource group (default)

    Select the resource class you created earlier and add the full IP address/service tag.

  • Perform a Smitty check/sync:# acmpAdditional settingsAdvanced verification and synchronization

    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.

  • Start the HACMP cluster:# acmpSmitty System Control (C-SPOC)HACMP Service ManagementStart cluster services

    Select both nodes to get started. Also make sure the cluster information daemon is running.

  • Check the overall status of the cluster:# clstat -o# kldump

    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.

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