What is GPFS filesystem in Linux?
The IBM® General Parallel File System (GPFS™) is a cluster file system. This means that it provides concurrent access to a single file system or set of file systems from multiple nodes. … You can create a GPFS cluster of AIX® nodes, Linux nodes, Windows server nodes, or a mix of all three.
How do I mount a cluster file system?
In each entry, specify the required mount options for the type of file system that you use. To automatically mount the cluster file system, set the mount at boot field to yes. For each cluster file system, ensure that the information in its /etc/vfstab entry is identical on each node.
How do I open a GPFS file in Linux?
For details, see the IBM Spectrum Scale: Concepts, Planning, and Installation Guide .
- Start the daemons on all of the nodes in the cluster by issuing the mmstartup -a command: mmstartup -a. …
- Check the messages recorded in /var/adm/ras/mmfs.log.latest on one node for verification.
What is a 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.
How do I mount a cluster file in Linux?
Using Cluster File Systems
- Manually. Use the mount command and the -g or -o global mount options to mount the cluster file system from the command line, for example: …
- Automatically. Create an entry in the /etc/vfstab file with a global mount option to mount the cluster file system at boot.
How do I know if GPFS is running?
Steps to follow if the GPFS daemon does not come up
- See GPFS modules cannot be loaded on Linux if your node is running Linux®, to verify that you have built the portability layer.
- Verify that the GPFS daemon is active by issuing: ps -e | grep mmfsd The output of this command should list mmfsd as operational.
How do I remove GPFS file system?
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.
How do I view GPFS logs?
The GPFS log can be found in the /var/adm/ras directory on each node. The GPFS log file is named mmfs. log.
What are the maximum cluster size that GPFS runs on?
The GPFS disk data structures support file systems with up to 4096 disks of up to 1TB in size each, for a total of 4 petabytes per file system.
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.
How does parallel file system work?
A parallel file system, also known as a clustered file system, is a type of storage system designed to store data across multiple networked servers and to facilitate high-performance access through simultaneous, coordinated input/output operations (IOPS) between clients and storage nodes.