Show Table of Contents
1.4. DM Multipath Components
Table 1.1, “DM Multipath Components”. describes the components of DM Multipath.
Table 1.1. DM Multipath Components
| Component | Description |
|---|---|
dm_multipath kernel module | Reroutes I/O and supports failover for paths and path groups. |
mpathconf utility | Configures and enables device mapper multipathing. |
multipath command | Lists and configures multipath devices. Normally started with /etc/rc.sysinit, it can also be started by a udev program whenever a block device is added. |
multipathd daemon | Monitors paths; as paths fail and come back, it may initiate path group switches. Allows interactive changes to multipath devices. The daemon must be restarted following any changes to the /etc/multipath.conf file. |
kpartx command | Creates device mapper devices for the partitions on a device. It is necessary to use this command for DOS-based partitions with DM Multipath. The kpartx command is provided in its own package, but the device-mapper-multipath package depends on it. |
Where did the comment section go?
Red Hat's documentation publication system recently went through an upgrade to enable speedier, more mobile-friendly content. We decided to re-evaluate our commenting platform to ensure that it meets your expectations and serves as an optimal feedback mechanism. During this redesign, we invite your input on providing feedback on Red Hat documentation via the discussion platform.