1# This is a basic configuration file with some examples, for device mapper
2# multipath.
3# For a complete list of the default configuration values, see
4# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.defaults
5# For a list of configuration options with descriptions, see
6# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.annotated
7
8## By default, devices with vendor = "IBM" and product = "S/390.*" are
9## blacklisted. To enable mulitpathing on these devies, uncomment the
10## following lines.
11#blacklist_exceptions {
12#	device {
13#		vendor	"IBM"
14#		product	"S/390.*"
15#	}
16#}
17
18## Use user friendly names, instead of using WWIDs as names.
19defaults {
20	user_friendly_names yes
21}
22##
23## Here is an example of how to configure some standard options.
24##
25#
26#defaults {
27#	udev_dir		/dev
28#	polling_interval 	10
29#	selector		"round-robin 0"
30#	path_grouping_policy	multibus
31#	getuid_callout		"/lib/udev/scsi_id --whitelisted --device=/dev/%n"
32#	prio			alua
33#	path_checker		readsector0
34#	rr_min_io		100
35#	max_fds			8192
36#	rr_weight		priorities
37#	failback		immediate
38#	no_path_retry		fail
39#	user_friendly_names	yes
40#}
41##
42## The wwid line in the following blacklist section is shown as an example
43## of how to blacklist devices by wwid.  The 2 devnode lines are the
44## compiled in default blacklist. If you want to blacklist entire types
45## of devices, such as all scsi devices, you should use a devnode line.
46## However, if you want to blacklist specific devices, you should use
47## a wwid line.  Since there is no guarantee that a specific device will
48## not change names on reboot (from /dev/sda to /dev/sdb for example)
49## devnode lines are not recommended for blacklisting specific devices.
50##
51#blacklist {
52#       wwid 26353900f02796769
53#	devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
54#	devnode "^hd[a-z]"
55#}
56#multipaths {
57#	multipath {
58#		wwid			3600508b4000156d700012000000b0000
59#		alias			yellow
60#		path_grouping_policy	multibus
61#		path_checker		readsector0
62#		path_selector		"round-robin 0"
63#		failback		manual
64#		rr_weight		priorities
65#		no_path_retry		5
66#	}
67#	multipath {
68#		wwid			1DEC_____321816758474
69#		alias			red
70#	}
71#}
72#devices {
73#	device {
74#		vendor			"COMPAQ  "
75#		product			"HSV110 (C)COMPAQ"
76#		path_grouping_policy	multibus
77#		getuid_callout          "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
78#		path_checker		readsector0
79#		path_selector		"round-robin 0"
80#		hardware_handler	"0"
81#		failback		15
82#		rr_weight		priorities
83#		no_path_retry		queue
84#	}
85#	device {
86#		vendor			"COMPAQ  "
87#		product			"MSA1000         "
88#		path_grouping_policy	multibus
89#	}
90#}
91