To Understanding AIX Processor Utilization

To understand the Actual AIX systems processor utilization there are multiple methods are available, so before that we should remember below mentioned processor Factors and STATES. lparstat -E option will help us to understand actual processor utilization. There will be two columns are listed, in that Actual column filed will give us exact utilization of processor Processor Utilizations Factors and STATES: user% The percentage of processor used by programs running in user mode sys% The percentage of processor used by programs running in kernel mode. Wait% The percentage of time…

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AIX SYSTEM DUMP DEVICE

VIEWING  DUMP DEVICE # sysdumpdev -l primary /dev/hd6 secondary /dev/sysdumpnull copy directory /var/adm/ras forced copy flag TRUE always allow dump FALSE dump compression ON CREATING SECONDARY DUMP DEVICE: # mklv -t jfs2 rootvg 2 lg_dumplv # sysdumpdev -s /dev/lg_dumplv primary /dev/hd6 secondary /dev/lg_dumplv copy directory /var/adm/ras forced copy flag TRUE always allow dump FALSE dump compression ON SCANNING DUMP DEVICE: # sysdumpdev -L -S /dev/hd6 0453-019 No previous dumps recorded. Scanning device /dev/hd6 for existing dump. A valid dump was not detected in the dump devices. Scanning device /dev/lg_dumplv for…

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How To Increase GPFS Mount Point Size in AIX

To increase the GPFS mount point size we need at-least one shared storage free disk, Storage disks to needs to be share wherever the mount point has been mounted in this cluster Nodes. We can’t use available free space from the existing file-system. Create New NSD disks  from the newly allocated storage disks.       ➡  mmcrnsd Assign created NSD disks into the remaining available cluster Nodes.       ➡  mmchnsd Add the created NSD disks into the GPFS mount Point.      ➡  mmadddisk Verify the Increased GPFS mount Point…

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How To Change GPFS File-Systems Name in AIX

GPFS File system name change it’s like Aix normal AIX File-system LVM command, but before change the file-system name we have to follow the mentioned steps. Step 1: Ask application team to stop the services and which is currently using that particular filesystem. Step 2: After getting confirmation from application team, needs to verify all the nodes is that particular file-systems currently holding any application process or not. NODE1+NODE2:# fuser -duV /dev/testgpfs For Linux NODE1+NODE2:# lsof -a +L1 /dev/testgpfs_lv Step 3: If that GPFS mount point not used for any…

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How To Increase GPFS Mount point inode limit in AIX Environment

In this post we are going to discuss about how to increase GPFS mount point inode limit. inode is nothing-but number of files count in our file systems. Once we created GPFS file systems its having the default inode maximum inode limit. its depends on our storage disk free space. Many time we will get the GPFS mount point inode  full kind of error, suppose we are not increasing immediately cluster will have possibility to get down. So we have to take the action immediately. To avoid this issue we…

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GPFS Cluster configuration in AIX Environment (IBM Spectrum Scale)

In this post we are going to learn how to configure GPFS cluster configuration in AIX environment. So we are going to configure the GPFS cluster with two nodes setup. If you want to learn GPFS full concepts you can refer IBM site. Setup and Preparation: Operating System Setup: To Build two aix nodes with same OS level (AIX 6.1.TL9-Spx or 7.1TL4-spX) along with latest updates, and configure the Host name and IP address. Verify the rootvg disk path status. Mirror rootvg and set bosboot and bootlist. Storage Setup: Need shared…

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