linux下安装集群需要修改 /etc/multipath.conf

 

/etc/multipath.conf配置如下：

 

### 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 RHEL5
### 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_interval        10
        selector                "round-robin 0"
        path_grouping_policy    failover
        getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
        prio_callout            "/bin/true"
        path_checker            tur
        rr_min_io               100
        rr_weight               uniform
        failback                immediate
        no_path_retry           12
        user_friendly_names     yes
}

# 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 {
#       wwid            26353900f02796769
        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 {
#       wwid            2345234245647657
#       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                    2039485769900000000
#       alias                   red
#       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_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 HP P2000 family

device {
        vendor                  "HP"
        product                 "P2000 G3 FC|P2000G3 FC/iSCSI"
        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_policy    multibus
        getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
        path_selector           "round-robin 0"
        rr_weight               uniform
        path_checker            tur
        hardware_handler        "0"
        failback                immediate
        no_path_retry           18
        rr_min_io               1000
}

# 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/hp_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_policy    multibus
        getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
        path_selector           "round-robin 0"
        rr_weight               uniform
        path_checker            tur
        hardware_handler        "0"
        failback                immediate
        no_path_retry           18
        rr_min_io               100
}
# To blacklist a device by vendor and product say, to blacklist a XP device
# uncomment the below block

#device {
#       vendor                  "HP"
#       product_blacklist       "OPEN-.*"
#}

}