HP P2000+RHEL多路径配置

在P2000分配好LUN之后

1. 执行以下操作

chkconfig multipathd on

modprobe dm-multipath

modprobe dm-round-robin

service multipathd start

multipath –v2

 

 

2. 安装HP多路径软件（仅仅针对RHEL5.5以下版本，5.5以上版本自带多路径软件）；

tar -xzvf HPDMmultipath-4.4.1.tar.gz

 

cd /tmp/HPDMmultipath-4.4.1

[root@localhost HPDMmultipath-4.4.1]# ./INSTALL

 

 

** HPDMmultipath-4.4.1 kit Installation. Date : Tue Feb 14 15:58:58 CST 2012 **

 

Checking for the Operating System version. Please wait...

 

HP Device Mapper Multipath v4.4.1 kit - Installation Menu

 

1. Install HPDM Multipath Utilities

2. Uninstall HPDM Multipath Utilities

3. Exit

 

Enter choice [1/2/3] : 1

 

Note: This will install HPDMmultipath-4.4.1 tools for HP StorageWorks disk

 

 

Warning: If you are retaining the existing /etc/multipath.conf file, you will

have to manually edit the file with HP recommended parameters.

Please refer user documentation for more details.

 

 

Would you like to overwrite the existing /etc/multipath.conf file with the

new multipath configuration file ? (y/n) : y

 

Saving /etc/multipath.conf file to /etc/multipath.conf.savefile

Copying new multipath configuration file multipath.conf to /etc directory

 

Configuring multipath services to start at boot time....OK

 

Installation completed successfully!

 

 

3. vi /etc/multipath.conf

 

### Donot edit the first two lines of this file or remove this file

### HP Device Mapper Multipath Enablement Kit v4.4.1

 

### The Device Mapper Multipath Template configuration file for RHEL5U4

### or later releases to be used with HP Storageworks Arrays.

 

### Use this configuration file as your /etc/multipath.conf file.

### If you already have a valid working configuration file, refer here

### for the recommended configuration for HP arrays.

 

### For a list of configuration options with descriptions, please refer

### to /usr/share/doc/<multipath-tools-version>/multipath.conf.annotated

 

# The defaults section

 

defaults {

udev_dir/dev

polling_interval10

selector"round-robin 0"

path_grouping_policyfailover

getuid_callout"/sbin/scsi_id -g -u -s /block/%n"

prio_callout"/bin/true"

path_checkertur

rr_min_io100

rr_weight       uniform

failbackimmediate

no_path_retry12

user_friendly_namesyes

}

 

# The blacklist section - use this to blacklist a multipath device based on

# it's wwid ( using wwid ) or device names ( using devnode ) or

# vendor and product id ( using device block).

 

blacklist {

#wwid26353900f02796769

devnode"^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"

devnode "^hd[a-z][[0-9]*]"

#devnode"^cciss!c[0-9]d[0-9]*"

#device {

#vendor "HP"

#product"OPEN-*"

#}

}

 

# The blacklist_exceptions section - to list device names to be treated

# as multipath candidates even if they are on the blacklist.

 

# Note: blacklist exceptions are only valid in the same class.

#       It is not possible to blacklist devices using the devnode keyword

#       and to exclude some devices of them using the wwid keyword.

 

#blacklist_exceptions {

#wwid2345234245647657

#devnode"sda"

#device {

#vendor"HP"

#product"OPEN-*"

#}

#}

 

# The multipaths section - uncomment this section to define a per multipath

# device settings.

 

multipaths {

 

# uncomment the multipath block to modify the settings of a multipath device

# based on its wwid

 

multipath {

wwid                    3600c0ff000134c44f69f3a4f01000000

alias                   mpath1

path_grouping_policy    group_by_prio

path_selector           "round-robin 0"

failback                immediate

rr_weight               uniform

no_path_retry           10

rr_min_io               100

}

 

multipath {

wwid                    3600c0ff000134c44bc9f3a4f01000000

alias                   mpath0

path_grouping_policy    group_by_prio

path_selector           "round-robin 0"

failback                immediate

rr_weight               uniform

no_path_retry           10

rr_min_io               100

}

 

 

 

}

 

# The devices section - used to define per storage array model settings

 

devices {

 

# If you are already using a valid configuration file and do not have a

# device subsection for HP arrays, please add the appropriate device subsection

# for the respective arrays from the entries below.

# If you already have a device subsection for HP arrays which has different

# parameters from the entries below, modify it appropriately.

 

# For EVA A/A arrays

 

#device {

#vendor"HP|COMPAQ"

#product "HSV1[01]1 \(C\)COMPAQ|HSV2[01]0|HSV300|HSV4[05]0"

#path_grouping_policygroup_by_prio

#        getuid_callout"/sbin/scsi_id -g -u -s /block/%n"

#        path_checkertur

#        path_selector"round-robin 0"

#        prio_callout"/sbin/mpath_prio_alua /dev/%n"

#        rr_weightuniform

#        failbackimmediate

#hardware_handler"0"

#        no_path_retry18

#rr_min_io100

#}

 

# For HP P2000 family

 

device {

vendor                  "HP"

product                 "P2000 G3 FC|P2000G3 FC"

path_grouping_policy    group_by_prio

getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"

path_checker            tur

path_selector           "round-robin 0"

prio_callout            "/sbin/mpath_prio_alua /dev/%n"

rr_weight               uniform

failback                immediate

hardware_handler        "0"

no_path_retry           18

rr_min_io               100

}

 

# For XP arrays

 

#device {

#        vendor"HP"

#        product"OPEN-.*"

#        path_grouping_policymultibus

#        getuid_callout"/sbin/scsi_id -g -u -s /block/%n"

#path_selector"round-robin 0"

#        rr_weightuniform

#        path_checkertur

#hardware_handler"0"

#        failbackimmediate

#        no_path_retry18

#rr_min_io1000

#}

 

# For MSA A/A arrays

 

#device {

#        vendor                  "HP"

#        product                 "MSA VOLUME*"

#        path_grouping_policy    group_by_prio

#        getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"

#        path_checker            tur

#        path_selector           "round-robin 0"

#        prio_callout            "/sbin/mpath_prio_alua /dev/%n"

#        rr_weight               uniform

#        failback                immediate

#        hardware_handler        "0"

#        no_path_retry           18

#        rr_min_io               100

#}

 

# For MSA2xxxsa arrays

 

#device {

#        vendor                  "HP"

#        product                 "MSA2012sa|MSA2312sa|MSA2324sa"

#        path_grouping_policy    group_by_prio

#        getuid_callout          "/sbin/scsi_id -g -u -n -s /block/%n"

#        path_checker            tur

#        path_selector           "round-robin 0"

#        prio_callout            "/sbin/mpath_prio_alua %d"

#        rr_weight               uniform

#        failback                immediate

#        hardware_handler        "0"

#        no_path_retry           18

#        rr_min_io               100

#}

 

# For MSA23xxfc and MSA23xxi arrays

 

#device {

#        vendor                  "HP"

#        product                 "MSA2312fc|MSA2324fc|MSA2312i|MSA2324i"

#        path_grouping_policy    group_by_prio

#        getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"

#        path_checker            tur

#        path_selector           "round-robin 0"

#        prio_callout            "/sbin/mpath_prio_alua /dev/%n"

#        rr_weight               uniform

#        failback                immediate

#        hardware_handler        "0"

#        no_path_retry           18

#        rr_min_io               100

#}

 

# For MSA20xxfc, MSA22xxfc and MSA20xxi arrays

 

#device {

#        vendor"HP"

#        product"MSA2[02]12fc|MSA2012i"

#        path_grouping_policymultibus

#        getuid_callout"/sbin/scsi_id -g -u -s /block/%n"

#path_selector"round-robin 0"

#        rr_weightuniform

#        path_checkertur

#hardware_handler"0"

#        failbackimmediate

#        no_path_retry18

#rr_min_io100

#}

# To blacklist a device by vendor and product say, to blacklist a XP device

# uncomment the below block

 

#device {

#vendor"HP"

#product_blacklist"OPEN-.*"

#}

 

}

 

 

 

 

4. 重启机器或者重启multipath服务

 

service multipathd restart

 

5. 查看多路径和磁盘的信息；

multipath -ll

fdisk -l