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Chapter 1. Device Mapper Multipathing
Figure 1.3. Active/Active Multipath Configuration with One RAID Device
2. Storage Array Support
By default, DM-Multipath includes support for the most common storage arrays that support
DM-Multipath. The supported devices can be found in the
your storage array supports DM-Multipath and is not configured by default in this file, you may
need to add them to the DM-Multipath configuration file,
the DM-Multipath configuration file, see
Some storage arrays require special handling of I/O errors and path switching. These require
separate hardware handler kernel modules.
3. DM-Multipath Components
Table 1.1, "DM-Multipath
Component
kernel module
dm-multipath
command
multipath
4
Chapter 4, The DM-Multipath Configuration
Components". describes the components of DM-Multipath.
Description
Reroutes I/O and supports failover for paths and path groups.
Lists and configures multipath devices. Normally started up
with
/etc/rc.sysinit
multipath.conf.defaults
. For information on
multipath.conf
, it can also be started up by a
file. If
File.
udev
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Table of Contents
Troubleshooting
