How to delete node from GPFS cluster?
You can delete nodes from a GPFS cluster by issuing the mmdelnode command. The GPFS daemon must be shut down on a node before the node can be deleted.
How do I delete a GPFS file system?
Steps to permanently uninstall GPFS
- Unmount all GPFS file systems on all nodes by issuing the mmumount all -a command.
- Issue the mmdelfs command for each file system in the cluster to remove GPFS file systems.
- Issue the mmdelnsd command for each NSD in the cluster to remove the NSD volume ID from the device.
What is GPFS cluster?
GPFS clusters can contain a mix of all supported node types including Linux, AIX®, and Windows Server. These nodes can all be attached to a common set of SAN storage or through a mix of SAN and network attached nodes. Nodes can all be in a single cluster, or data can be shared across multiple clusters.
What is GPFS used for?
IBM General Parallel File System (IBM GPFS) is a file system used to distribute and manage data across multiple servers, and is implemented in many high-performance computing and large-scale storage environments. GPFS is among the leading file systems for high performance computing (HPC) applications.
Who uses GPFS?
It is used by many of the world’s largest commercial companies, as well as some of the supercomputers on the Top 500 List. For example, it is the filesystem of the Summit at Oak Ridge National Laboratory which was the #1 fastest supercomputer in the world in the November 2019 top500 list of supercomputers.
What is GPFS in AIX?
The GPFS is a high-performance clustered file system that can be deployed in shared-disk or shared-nothing distributed parallel modes. GPFS provides concurrent high-speed file access to the applications executing on multiple nodes of clusters which can be used with AIX 5L, Linux, and Windows platforms.
What is GPFS in Linux?
IBM General Parallel File System (GPFS) for Linux Multiplatform is ideal for high-performance parallel file transfer and parallel I/O to single or multiple files. GPFS is designed to help you to achieve data lifecycle management efficiencies through policy-driven automation and tiered storage management.
How to remove all configuration from GPFS cluster?
The removal should be done for each nodeset in the GPFS cluster using the mmdelnode command as follows: And finally, remove the GPFS cluster definition with mmdelcluster -a. Example 8-12 shows the commands we used to delete our small GPFS configuration. The commands were run exclusively on the GPFS primary node.
How to remove all nodes from Nodeset in GPFs?
Remove all nodes from nodeset with mmdelnode -a. The removal should be done for each nodeset in the GPFS cluster using the mmdelnode command as follows: And finally, remove the GPFS cluster definition with mmdelcluster -a. Example 8-12 shows the commands we used to delete our small GPFS configuration.
Is it safe to remove a disk from GPFS?
Although this sounds like a scary thing to do, it is actually perfectly safe; GPFS handles this easily when the system utilization is low. Under load, it may take a significant amount of time. Removal is accomplished with the GPFS mmdeldisk command, passing the file system name and disk (NSD) you want to delete.
How to verify that NSD is a member of GPFS?
Using the mmlsdisk and mmlsnsd command, you can verify that the NSD is now a member of our GPFS file system, as in Example 8-4. You can also verify the capacity of your file system using mmdf, as shown in Example 8-5.