January 2023

Internet Small Computer System Interface (iSCSI) is an IP-based standard for connecting storage devices. iSCSI uses IP networks to encapsulate SCSI commands, allowing data to be...

Use the mounted.ocfs2 command to detect and list all OCFS2 volumes. This command scans all devices in /proc/partitions. The following example lists all OCFS2 devices: #...

Use the tunefs.ocfs2 command to change file system parameters. You can change all parameters except block size and cluster size. The options for tunefs.ocfs2 are similar...

Use the mount and umount commands to mount and unmount an OCFS2 volume, as you would with any other type of file system. The following example...

Use the mkfs.ocfs2 command to create an OCFS2 volume on a device. You cannot use this utility to overwrite an existing volume that is mounted by...

In addition to configuring the cluster layout in the /etc/ocfs2/cluster.conf file, the O2CB cluster stack configuration consists of cluster timeout configuration. O2CB has four configurable cluster...

The O2CB cluster stack uses a heartbeat to determine whether a node is dead or alive. Connectivity of nodes and storage devices must be assured to...

Use the o2cb utility to add, remove, and list information in the cluster layout configuration file. You can also use this utility to register and unregister...

By default, the cluster layout configuration file for OCFS2 is /etc/ocfs2/cluster.conf. It is not necessary to configure this file when mounting an OCFS2 volume on a...

There are two configurations needed for O2CB cluster stack to work properly. The first kernel setting is panic_on_oops, which you must enable to change a kernel...