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1.TH MULTIPATH 8 "February 2004" "" "Linux Administrator's Manual"
2.SH NAME
3multipath \- Device mapper target autoconfig
4.SH SYNOPSIS
5.B multipath
6.RB [\| \-v | \-q \|]
7.RB [\| \-d \|]
8.RB [\| \-m\ \c
9.IR max_devs \|]
10.RB [\| \-p\ \c
11.BR failover | multibus | group_by_serial \|]
12.RB [\| device \|]
13.SH DESCRIPTION
14.B multipath
15is used to detect multiple paths to devices for fail-over or performance reasons and coalesces them.
16.SH OPTIONS
17.TP
18.B \-v
19verbose, print all paths and multipaths
20.TP
21.B \-q
22quiet, no output at all
23.TP
24.B \-d
25dry run, do not create or update devmaps
26.TP
27.BI \-m " max_devs"
28scan
29.I max_devs
30devices at most
31.TP
32.BI \-p " policy"
33force maps to specified policy:
34.RS 1.2i
35.TP 1.2i
36.B failover
371 path per priority group
38.TP
39.B multibus
40all paths in 1 priority group
41.TP
42.B group_by_serial
431 priority group per serial
44.RE
45.TP
46.B device
47limit the [re]configuration to the specified device's multipath scope. device is given in its hotplug $DEVPATH form like /devices/pci0000:03/0000:03:01.0/host0/0:0:5:1
48.SH "SEE ALSO"
49.BR udev (8),
50.BR dmsetup (8)
51.SH AUTHORS
52.B multipath
53was developed by Christophe Varoqui, <christophe.varoqui@free.fr> and others.