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Linux 7使用 multipath及udev绑定磁盘

linux 7的multipath配置方法变化不大,但在/etc目录下面默认是没有multipath.conf文件的,默认也没有启用,需要激活。

[root@SL010A-IVDB02 ~]# ls /etc/multipath.conf
ls: cannot access /etc/multipath.conf: No such file or directory
[root@SL010A-IVDB02 ~]# multipath -ll
May 16 13:00:26 | DM multipath kernel driver not loaded
May 16 13:00:26 | /etc/multipath.conf does not exist, blacklisting all devices.
May 16 13:00:26 | A default multipath.conf file is located at
May 16 13:00:26 | /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf
May 16 13:00:26 | You can run /sbin/mpathconf --enable to create
May 16 13:00:26 | /etc/multipath.conf. See man mpathconf(8) for more details
May 16 13:00:26 | DM multipath kernel driver not loaded

通过multipath –ll命令的输出可用看到,multipath默认没有启用,需要通过/sbin/mpathconf –enable来激活。

Multipath需要安装device-mapper和device-mapper-multipath包。

[root@SL010A-IVDB02 ~]# rpm -qa|grep device-mapper
device-mapper-libs-1.02.149-8.el7.x86_64
device-mapper-1.02.149-8.el7.x86_64
device-mapper-multipath-0.4.9-123.el7.x86_64
device-mapper-event-libs-1.02.149-8.el7.x86_64
device-mapper-event-1.02.149-8.el7.x86_64
device-mapper-persistent-data-0.7.3-3.el7.x86_64
device-mapper-multipath-libs-0.4.9-123.el7.x86_64

下面执行/sbin/mpathconf –enable命令来启用multipath。

[root@SL010A-IVDB02 ~]# mpathconf --enable

mpathconf –enable命令会在/etc目录下创建multipath.conf文件,并激活multipath程序。

[root@SL010A-IVDB02 ~]# ls /etc/multipath.conf
/etc/multipath.conf
[root@SL010A-IVDB02 ~]# systemctl status multipathd.service
● multipathd.service - Device-Mapper Multipath Device Controller
   Loaded: loaded (/usr/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled)
   Active: inactive (dead)
Condition: start condition failed at Thu 2019-05-16 12:17:54 CST; 44min ago
           ConditionPathExists=/etc/multipath.conf was not met

启动multipath程序。

[root@SL010A-IVDB02 ~]#  systemctl start multipathd.service
[root@SL010A-IVDB02 ~]# systemctl status multipathd.service
● multipathd.service - Device-Mapper Multipath Device Controller
   Loaded: loaded (/usr/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2019-05-16 13:02:25 CST; 3s ago
  Process: 80054 ExecStart=/sbin/multipathd (code=exited, status=0/SUCCESS)
  Process: 80051 ExecStartPre=/sbin/multipath -A (code=exited, status=0/SUCCESS)
  Process: 80049 ExecStartPre=/sbin/modprobe dm-multipath (code=exited, status=0/SUCCESS)
 Main PID: 80057 (multipathd)
    Tasks: 19
   CGroup: /system.slice/multipathd.service
           └─80057 /sbin/multipathd

May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathe: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathf: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathg: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathh: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathi: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathj: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathk: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathl: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: mpathm: event checker started
May 16 13:02:25 SL010A-IVDB02 multipathd[80057]: path checkers start up

Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/multi-user.target.

通过multipath –ll命令列出存储设备。

[root@SL010A-IVDB02 ~]# multipath -ll
mpathe (36006016086003500c22ae6353b03e911) dm-4 DGC     ,RAID 5          
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:12 sdac 65:192 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:12 sdo  8:224  active ready running
mpathd (36006016086003500ea9890223b03e911) dm-3 DGC     ,RAID 5          
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:11 sdn  8:208  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:11 sdab 65:176 active ready running
mpathc (36006016086003500d2b6fbca3a03e911) dm-2 DGC     ,RAID 5          
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:10 sdm  8:192  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:10 sdaa 65:160 active ready running
mpathb (360060160860035002689ec0a3903e911) dm-1 DGC     ,RAID 10         
size=2.0G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:1  sdr  65:16  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:1  sdd  8:48   active ready running
mpatha (36006016086003500b49583f23803e911) dm-0 DGC     ,RAID 10         
size=2.0G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:0  sdc  8:32   active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:0  sdq  65:0   active ready running
mpathm (36006016086003500f0a963ac3a03e911) dm-12 DGC     ,RAID 5          
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:9  sdl  8:176  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:9  sdz  65:144 active ready running
mpathl (360060160860035001819932c3a03e911) dm-11 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:8  sdy  65:128 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:8  sdk  8:160  active ready running
mpathk (360060160860035000eed47083a03e911) dm-10 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:7  sdx  65:112 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:7  sdj  8:144  active ready running
mpathj (36006016086003500482ebee93903e911) dm-9 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:6  sdw  65:96  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:6  sdi  8:128  active ready running
mpathi (36006016086003500ba73dad43903e911) dm-8 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:5  sdh  8:112  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:5  sdv  65:80  active ready running
mpathh (3600601608600350086c452a93903e911) dm-7 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:4  sdg  8:96   active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:4  sdu  65:64  active ready running
mpathg (36006016086003500b46155863903e911) dm-6 DGC     ,RAID 10         
size=1.0T features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:1:3  sdf  8:80   active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 5:0:1:3  sdt  65:48  active ready running
mpathf (360060160860035006c1c231e3903e911) dm-5 DGC     ,RAID 10         
size=2.0G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 5:0:1:2  sds  65:32  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 2:0:1:2  sde  8:64   active ready running

编辑/etc/multipath.conf文件,添加设备的绑定信息,也就是下文的multipaths部分。

[root@SL010A-IVDB02 ~]# vi /etc/multipath.conf 

# This is a basic configuration file with some examples, for device mapper
# multipath.
#
# For a complete list of the default configuration values, run either
# multipath -t
# or
# multipathd show config
#
# For a list of configuration options with descriptions, see the multipath.conf
# man page

## 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
        find_multipaths yes
}
##
## Here is an example of how to configure some standard options.
##
#
#defaults {
#       polling_interval        10
#       path_selector           "round-robin 0"
#       path_grouping_policy    multibus
#       uid_attribute           ID_SERIAL
#       prio                    alua
#       path_checker            readsector0
#       rr_min_io               100
#       max_fds                 8192
#       rr_weight               priorities
#       failback                immediate
#       no_path_retry           fail
#       user_friendly_names     yes
"/etc/multipath.conf" 95L, 2415C
## 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_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
#               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
#       }
#}

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

## Use user friendly names, instead of using WWIDs as names.
defaults {
        user_friendly_names yes
}

multipaths {
        multipath {
                wwid                    360060160860035006c1c231e3903e911
                alias                   crs1
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    360060160860035002689ec0a3903e911
                alias                   crs2
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    36006016086003500b49583f23803e911
                alias                   crs3
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    36006016086003500c22ae6353b03e911
                alias                   data1
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
       multipath {
                wwid                    36006016086003500ea9890223b03e911
                alias                   data2
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    36006016086003500d2b6fbca3a03e911
                alias                   data3
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    36006016086003500f0a963ac3a03e911
                alias                   data4
                path_grouping_policy    multibus
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
       multipath {
                wwid                    360060160860035001819932c3a03e911
                alias                   data5
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
        multipath {
                wwid                    360060160860035000eed47083a03e911
                alias                   data6
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
       multipath {
                wwid                    36006016086003500482ebee93903e911
                alias                   data7
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
      multipath {
                wwid                    36006016086003500ba73dad43903e911
                alias                   data8
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
      multipath {
                wwid                    3600601608600350086c452a93903e911
                alias                   data9
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
      multipath {
                wwid                    36006016086003500b46155863903e911
                alias                   data10
                path_selector           "round-robin 0"
                failback                immediate
                rr_weight               uniform
                no_path_retry           12
                rr_min_io               100
                }
}
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                  "EMC"
                product                 "VNX5800"
                path_grouping_policy    multibus
        }
}

通过multipath –r命令刷新multipath,使之生效。

[root@SL010A-IVDB02 ~]# multipath -r
Jun 06 15:23:08 | /etc/multipath.conf line 98, duplicate keyword: blacklist
Jun 06 15:23:08 | /etc/multipath.conf line 103, duplicate keyword: defaults
reload: crs3 (36006016086003500b49583f23803e911) undef DGC     ,RAID 10         
size=2.0G features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=70 status=undef
  |- 1:0:1:0  sdc  8:32   active ready running
  `- 4:0:1:0  sdq  65:0   active ready running
reload: crs2 (360060160860035002689ec0a3903e911) undef DGC     ,RAID 10         
size=2.0G features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=70 status=undef
  |- 1:0:1:1  sdd  8:48   active ready running
  `- 4:0:1:1  sdr  65:16  active ready running
reload: data3 (36006016086003500d2b6fbca3a03e911) undef DGC     ,RAID 5          
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=70 status=undef
  |- 1:0:1:10 sdm  8:192  active ready running
  `- 4:0:1:10 sdaa 65:160 active ready running
reload: data2 (36006016086003500ea9890223b03e911) undef DGC     ,RAID 5          
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=70 status=undef
  |- 1:0:1:11 sdn  8:208  active ready running
  `- 4:0:1:11 sdab 65:176 active ready running
reload: data1 (36006016086003500c22ae6353b03e911) undef DGC     ,RAID 5          
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=30 status=undef
  |- 1:0:1:12 sdo  8:224  active ready running
  `- 4:0:1:12 sdac 65:192 active ready running
reload: crs1 (360060160860035006c1c231e3903e911) undef DGC     ,RAID 10         
size=2.0G features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=30 status=undef
  |- 1:0:1:2  sde  8:64   active ready running
  `- 4:0:1:2  sds  65:32  active ready running
reload: data10 (36006016086003500b46155863903e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 1:0:1:3  sdf  8:80   active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 4:0:1:3  sdt  65:48  active ready running
reload: data9 (3600601608600350086c452a93903e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 1:0:1:4  sdg  8:96   active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 4:0:1:4  sdu  65:64  active ready running
reload: data8 (36006016086003500ba73dad43903e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 1:0:1:5  sdh  8:112  active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 4:0:1:5  sdv  65:80  active ready running
reload: data7 (36006016086003500482ebee93903e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 4:0:1:6  sdw  65:96  active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 1:0:1:6  sdi  8:128  active ready running
reload: data6 (360060160860035000eed47083a03e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 4:0:1:7  sdx  65:112 active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 1:0:1:7  sdj  8:144  active ready running
reload: data5 (360060160860035001819932c3a03e911) undef DGC     ,RAID 10         
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
|-+- policy='round-robin 0' prio=50 status=undef
| `- 4:0:1:8  sdy  65:128 active ready running
`-+- policy='round-robin 0' prio=10 status=undef
  `- 1:0:1:8  sdk  8:160  active ready running
reload: data4 (36006016086003500f0a963ac3a03e911) undef DGC     ,RAID 5          
size=1.0T features='1 queue_if_no_path' hwhandler='1 emc' wp=undef
`-+- policy='round-robin 0' prio=70 status=undef
  |- 1:0:1:9  sdl  8:176  active ready running
  `- 4:0:1:9  sdz  65:144 active ready running

绑定成功后,会在/dev/mapper目录下生成相关的设备链接。

[root@SL010A-IVDB02 ~]# ll /dev/mapper/
total 0
crw------- 1 root root 10, 236 May 17 10:20 control
lrwxrwxrwx 1 root root       8 Jun  6 15:24 crs1 -> ../dm-12
lrwxrwxrwx 1 root root       7 Jun  6 15:23 crs2 -> ../dm-1
lrwxrwxrwx 1 root root       7 Jun  6 15:23 crs3 -> ../dm-7
lrwxrwxrwx 1 root root       7 Jun  6 15:25 data1 -> ../dm-0
lrwxrwxrwx 1 root root       8 Jun  6 15:23 data10 -> ../dm-10
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data2 -> ../dm-4
lrwxrwxrwx 1 root root       7 Jun  6 15:25 data3 -> ../dm-5
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data4 -> ../dm-6
lrwxrwxrwx 1 root root       8 Jun  6 15:25 data5 -> ../dm-11
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data6 -> ../dm-9
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data7 -> ../dm-3
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data8 -> ../dm-8
lrwxrwxrwx 1 root root       7 Jun  6 15:23 data9 -> ../dm-2

然后使用UDEV绑定这些设备的权限。

[root@SL0101A-IVDB02 ~]# cd /etc/udev/rules.d/
[root@SL0101A-IVDB02 rules.d]# vi 99-asm.rules 

KERNEL=="dm-0", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-1", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-2", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-3", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-4", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-5", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-6", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-7", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-8", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-9", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-10", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-11", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="dm-12", OWNER="grid", GROUP="asmadmin", MODE="0660"

通过下面的命令使UDEV配置生效,Linux 7已经没有start_udev命令了。

[root@SL010A-IVDB02 rules.d]# udevadm trigger --type=devices --action=change

或者使用下面的命令重新加载UDEV的配置。

[root@SL010A-IVDB02 rules.d]# udevadm control --reload-rules

再或者,直接重启UDEV服务。

[root@SL010A-IVDB02 rules.d]# systemctl restart systemd-udev-trigger.service
[root@SL010A-IVDB02 rules.d]# ll /dev/dm-*
brw-rw---- 1 grid asmadmin 252,  0 May 17 10:20 /dev/dm-0
brw-rw---- 1 grid asmadmin 252,  1 May 17 10:20 /dev/dm-1
brw-rw---- 1 grid asmadmin 252, 10 May 17 10:20 /dev/dm-10
brw-rw---- 1 grid asmadmin 252, 11 May 17 10:20 /dev/dm-11
brw-rw---- 1 grid asmadmin 252, 12 May 17 10:20 /dev/dm-12
brw-rw---- 1 grid asmadmin 252,  2 May 17 10:20 /dev/dm-2
brw-rw---- 1 grid asmadmin 252,  3 May 17 10:20 /dev/dm-3
brw-rw---- 1 grid asmadmin 252,  4 May 17 10:20 /dev/dm-4
brw-rw---- 1 grid asmadmin 252,  5 May 17 10:20 /dev/dm-5
brw-rw---- 1 grid asmadmin 252,  6 May 17 10:20 /dev/dm-6
brw-rw---- 1 grid asmadmin 252,  7 May 17 10:20 /dev/dm-7
brw-rw---- 1 grid asmadmin 252,  8 May 17 10:20 /dev/dm-8
brw-rw---- 1 grid asmadmin 252,  9 May 17 10:20 /dev/dm-9

最后,还需要重启服务器进行验证。

 

 

 

 

本文固定链接: http://www.dbdream.com.cn/2019/06/linux-7%e4%bd%bf%e7%94%a8-multipath%e5%8f%8audev%e7%bb%91%e5%ae%9a%e7%a3%81%e7%9b%98/ | 信春哥,系统稳,闭眼上线不回滚!

该日志由 dbdream 于2019年06月06日发表在 Linux 分类下, 你可以发表评论,并在保留原文地址及作者的情况下引用到你的网站或博客。
原创文章转载请注明: Linux 7使用 multipath及udev绑定磁盘 | 信春哥,系统稳,闭眼上线不回滚!
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