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CentOS multipath 多路径软件
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情况:

CentOS5.9;DELL的SC8000;CentOS识别到的WWID:(36000d31000979600000000000000000b)

multipath默认配置文件如下:

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# This is a basic configuration file with some examples, for device mapper
# multipath.
# For a complete list of the default configuration values, see
# /usr/share/doc/device-mapper-multipath-0.4.7/multipath.conf.defaults
# For a list of configuration options with descriptions, see
# /usr/share/doc/device-mapper-multipath-0.4.7/multipath.conf.annotated




# Blacklist all devices by default. Remove this to enable multipathing
# on the default devices. 
#blacklist {
#        devnode "*"
#}


## By default, devices with vendor = "IBM" and product = "S/390.*" are
## blacklisted. To enable mulitpathing on these devies, uncomment the
## following lines.
#blacklist_exceptions {
# device {
# vendor "IBM"
# product "S/390.*"
# }
#}


## Use user friendly names, instead of using WWIDs as names.
defaults {
user_friendly_names yes
}
##
## Here is an example of how to configure some standard options.
##
#
#defaults {
# udev_dir /dev
# polling_interval 10
# selector "round-robin 0"
# path_grouping_policy multibus
# getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
# prio_callout none
# path_checker readsector0
# rr_min_io 100
# max_fds 8192
# rr_weight priorities
# failback immediate
# no_path_retry fail
# user_friendly_names yes
#}
##
## The wwid line in the following blacklist section is shown as an example
## of how to blacklist devices by wwid.  The 2 devnode lines are the
## compiled in default blacklist. If you want to blacklist entire types
## of devices, such as all scsi devices, you should use a devnode line.
## However, if you want to blacklist specific devices, you should use
## a wwid line.  Since there is no guarantee that a specific device will
## not change names on reboot (from /dev/sda to /dev/sdb for example)
## devnode lines are not recommended for blacklisting specific devices.
##
#blacklist {
#       wwid 26353900f02796769
# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
# devnode "^hd[a-z]"
#}
#multipaths {
# multipath {
# wwid 3600508b4000156d700012000000b0000
# alias yellow
# path_grouping_policy multibus
# path_checker readsector0
# path_selector "round-robin 0"
# failback manual
# rr_weight priorities
# no_path_retry 5
# }
# multipath {
# wwid 1DEC_____321816758474
# alias red
# }
#}
#devices {
# device {
# vendor "COMPAQ  "
# product "HSV110 (C)COMPAQ"
# path_grouping_policy multibus
# getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
# path_checker readsector0
# path_selector "round-robin 0"
# hardware_handler "0"
# failback 15
# rr_weight priorities
# no_path_retry queue
# }
# device {
# vendor "COMPAQ  "
# product "MSA1000         "
# path_grouping_policy multibus
# }
#}


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现在的配置:

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devices {
            device {
            vendor "COMPELNT"
            product "Compellent Vol"
            path_grouping_policy "multibus"
            path_checker "tur"
            features "0"
            hardware_handler "0"
#          prio "const"
            failback "immediate"
            rr_weight "uniform"
            no_path_retry "queue"
            }
}
multipaths {
            multipath {
            wwid 36000d31000979600000000000000000b

            alias DATA1
            }
}

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这样配置的话,服务器运行也没问题!

请问:prio_callout 是什么意思?devices里面的属性是什么意思?

能帮我写个配置文件吗?能分享一个中文视频教程吗?或手册!

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Peter-Pan
发帖于3年前 0回/639阅
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