1*4882a593Smuzhiyun# This is a basic configuration file with some examples, for device mapper 2*4882a593Smuzhiyun# multipath. 3*4882a593Smuzhiyun# For a complete list of the default configuration values, see 4*4882a593Smuzhiyun# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.defaults 5*4882a593Smuzhiyun# For a list of configuration options with descriptions, see 6*4882a593Smuzhiyun# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.annotated 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun## By default, devices with vendor = "IBM" and product = "S/390.*" are 9*4882a593Smuzhiyun## blacklisted. To enable mulitpathing on these devies, uncomment the 10*4882a593Smuzhiyun## following lines. 11*4882a593Smuzhiyun#blacklist_exceptions { 12*4882a593Smuzhiyun# device { 13*4882a593Smuzhiyun# vendor "IBM" 14*4882a593Smuzhiyun# product "S/390.*" 15*4882a593Smuzhiyun# } 16*4882a593Smuzhiyun#} 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun## Use user friendly names, instead of using WWIDs as names. 19*4882a593Smuzhiyundefaults { 20*4882a593Smuzhiyun user_friendly_names yes 21*4882a593Smuzhiyun} 22*4882a593Smuzhiyun## 23*4882a593Smuzhiyun## Here is an example of how to configure some standard options. 24*4882a593Smuzhiyun## 25*4882a593Smuzhiyun# 26*4882a593Smuzhiyun#defaults { 27*4882a593Smuzhiyun# udev_dir /dev 28*4882a593Smuzhiyun# polling_interval 10 29*4882a593Smuzhiyun# selector "round-robin 0" 30*4882a593Smuzhiyun# path_grouping_policy multibus 31*4882a593Smuzhiyun# getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n" 32*4882a593Smuzhiyun# prio alua 33*4882a593Smuzhiyun# path_checker readsector0 34*4882a593Smuzhiyun# rr_min_io 100 35*4882a593Smuzhiyun# max_fds 8192 36*4882a593Smuzhiyun# rr_weight priorities 37*4882a593Smuzhiyun# failback immediate 38*4882a593Smuzhiyun# no_path_retry fail 39*4882a593Smuzhiyun# user_friendly_names yes 40*4882a593Smuzhiyun#} 41*4882a593Smuzhiyun## 42*4882a593Smuzhiyun## The wwid line in the following blacklist section is shown as an example 43*4882a593Smuzhiyun## of how to blacklist devices by wwid. The 2 devnode lines are the 44*4882a593Smuzhiyun## compiled in default blacklist. If you want to blacklist entire types 45*4882a593Smuzhiyun## of devices, such as all scsi devices, you should use a devnode line. 46*4882a593Smuzhiyun## However, if you want to blacklist specific devices, you should use 47*4882a593Smuzhiyun## a wwid line. Since there is no guarantee that a specific device will 48*4882a593Smuzhiyun## not change names on reboot (from /dev/sda to /dev/sdb for example) 49*4882a593Smuzhiyun## devnode lines are not recommended for blacklisting specific devices. 50*4882a593Smuzhiyun## 51*4882a593Smuzhiyun#blacklist { 52*4882a593Smuzhiyun# wwid 26353900f02796769 53*4882a593Smuzhiyun# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" 54*4882a593Smuzhiyun# devnode "^hd[a-z]" 55*4882a593Smuzhiyun#} 56*4882a593Smuzhiyun#multipaths { 57*4882a593Smuzhiyun# multipath { 58*4882a593Smuzhiyun# wwid 3600508b4000156d700012000000b0000 59*4882a593Smuzhiyun# alias yellow 60*4882a593Smuzhiyun# path_grouping_policy multibus 61*4882a593Smuzhiyun# path_checker readsector0 62*4882a593Smuzhiyun# path_selector "round-robin 0" 63*4882a593Smuzhiyun# failback manual 64*4882a593Smuzhiyun# rr_weight priorities 65*4882a593Smuzhiyun# no_path_retry 5 66*4882a593Smuzhiyun# } 67*4882a593Smuzhiyun# multipath { 68*4882a593Smuzhiyun# wwid 1DEC_____321816758474 69*4882a593Smuzhiyun# alias red 70*4882a593Smuzhiyun# } 71*4882a593Smuzhiyun#} 72*4882a593Smuzhiyun#devices { 73*4882a593Smuzhiyun# device { 74*4882a593Smuzhiyun# vendor "COMPAQ " 75*4882a593Smuzhiyun# product "HSV110 (C)COMPAQ" 76*4882a593Smuzhiyun# path_grouping_policy multibus 77*4882a593Smuzhiyun# getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n" 78*4882a593Smuzhiyun# path_checker readsector0 79*4882a593Smuzhiyun# path_selector "round-robin 0" 80*4882a593Smuzhiyun# hardware_handler "0" 81*4882a593Smuzhiyun# failback 15 82*4882a593Smuzhiyun# rr_weight priorities 83*4882a593Smuzhiyun# no_path_retry queue 84*4882a593Smuzhiyun# } 85*4882a593Smuzhiyun# device { 86*4882a593Smuzhiyun# vendor "COMPAQ " 87*4882a593Smuzhiyun# product "MSA1000 " 88*4882a593Smuzhiyun# path_grouping_policy multibus 89*4882a593Smuzhiyun# } 90*4882a593Smuzhiyun#} 91