Blacklisting By Device Name; Blacklisting By Device Type - Red Hat DEVICE-MAPPER MULTIPATH 5.2 Configuration And Administration Manual

entry in the
blacklist
The following example shows the lines in the configuration file that would blacklist a device with
a WWID of 26353900f02796769.
blacklist {
wwid 26353900f02796769
}

2.2. Blacklisting By Device Name

You can blacklist device types by device name so that they will not be grouped into a multipath
device by specifying a
The following example shows the lines in the configuration file that would blacklist all SCSI
devices, since it blacklists are sd* devices.
blacklist {
devnode "^sd[a-z]"
}
You can use a
devnode
individual devices to blacklist rather than all devices of specific type; this is not recommended,
however. Unless it is statically mapped by
device will have the same name on reboot. For example, a device name could change from
to
/dev/sda /dev/sdb
By default, the following
these entires blacklist do not generally support DM-Multipath. To enable multipathing on any of
these devices, you would need to specify them in the
configuration file, as described in
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
}

2.3. Blacklisting By Device Type

You can specify specific device types in the
section. The following example blacklists all IBM DS4200 device and all HP devices.
device
blacklist {
device {
section of the configuration file.
entry in the
devnode blacklist
entry in the
blacklist
udev
on reboot.
entries are compiled in the default blacklist; the devices that
devnode
Section 2.4, "Blacklist
blacklist
Blacklisting By Device Name
section of the configuraion file.
section of the configuraion file to specify
rules, there is no guarantee that a specific
blacklist_exceptions
Exceptions".
section of the configuration file with a
section of the
19