Table of ContentsView in Frames

(Native multipathing) Examples of sanlun output containing DM-Multipath information

When you use the sanlun command to confirm that DM-Multipath is set up, the command output varies depending on the protocol you are using and whether you are using clustered Data ONTAP or Data ONTAP operating in 7-Mode.

The following sections provide examples of the type of output produced when you run the sanlun command in the following environments:

  • Clustered Data ONTAP with FC
  • Data ONTAP operating in 7-Mode with FC
  • Clustered Data ONTAP with iSCSI
  • Data ONTAP operating in 7-Mode iSCSI

Clustered Data ONTAP with FC: Example of using sanlun to display DM-Multipath information

The following examples show the output from the sanlun lun show -p command and the sanlun lun show all command in a Host Utilities environment that is running clustered Data ONTAP with FC and DM-Multipath.

The first example uses the sanlun lun show -p command. The output from the command shows that DM-Multipath (Multipath Provider: Native) is configured.

# sanlun lun show -p
                    ONTAP Path: vs_data28_2:/vol/vol1/lun1
                           LUN: 2
                      LUN Size: 3g
                          Mode: C
                   Host Device: 3600a09803246664c422b2d51674f7470
              Multipath Policy: round-robin 0
            Multipath Provider: Native
--------- ---------- ------- ------------ -----------------------------------
host      vserver
path      path       /dev/   host         vserver
state     type       node    adapter      LIF
--------- ---------- ------- ------------ -----------------------------------
up        primary    sdfo    host0        lif1
up        primary    sdfk    host0        lif2
up        primary    sdga    host1        lif3
up        primary    sdge    host1        lif4
up        secondary  sdgm    host1        lif5
up        secondary  sdgj    host0        lif6
up        secondary  sdfw    host0        lif7
up        secondary  sdgq    host1        lif8      

This example uses the sanlun lun show all command. The output shows that the LUNs are mapped to clustered Data ONTAP operating an environment using FC.

# sanlun lun show all
controller(7mode)/             device          host                  lun
vserver(Cmode) lun-pathname    filename        adapter    protocol   size    mode
---------------------------------------------------------------------------------
vs_data28_2    /vol/vol1/lun1 	/dev/sdgf       host1      FCP        3g      C
vs_data28_2    /vol/vol2/lun2 	/dev/sdge       host1      FCP        3g      C
vs_data28_2    /vol/vol3/lun3 	/dev/sdgd       host1      FCP        3g      C

Data ONTAP operating in 7-Mode with FC: Example of using sanlun to display DM-Multipath information

The following examples show the output from the sanlun lun show -p command and the sanlun lun show all in a Host Utilities environment that is running Data ONTAP operating in 7-Mode with FC and DM-Multipath.

Note: With the Linux Host Utilities 6.0 release, the output format of the sanlun utility has changed. The format no longer maintains backward compatibility when using LUNs mapped for Data ONTAP operating in 7-Mode.

The first example uses the sanlun lun show -p command. The output from the command shows that DM-Multipath (Multipath Provider: Native) is configured.

# sanlun lun show -p
                     ONTAP Path: fas3040-201-25:/vol/vol1/lun1
                           LUN: 27
                      LUN Size: 5g
           Controller CF State: Cluster Enabled
            Controller Partner: fas3040-201-24
                          Mode: 7
                   Host Device: 360a98000486e2f65686f647876573362
              Multipath Policy: round-robin 0
            Multipath Provider: Native
--------- ---------- ------- ------------ -----------------------------------
host      controller                      controller
path      path       /dev/   host         target
state     type       node    adapter      port
--------- ---------- ------- ------------ -----------------------------------
up        primary    sdbq    host0        2a
up        primary    sdeu    host0        1a
up        primary    sdgj    host1        2a
up        primary    sdjn    host1        1a
up        secondary  sdab    host0        2a
up        secondary  sddf    host0        1a
up        secondary  sdhy    host1        2a
up        secondary  sdlc    host1        1a 

This example uses the sanlun lun show all command. The output shows that the LUNs are mapped to Data ONTAP operating in 7-Mode in an environment using FC.

# sanlun lun show all
controller(7mode)/                device      host                  lun
vserver(Cmode)  lun-pathname      filename    adapter    protocol   size    mode
--------------------------------------------------------------------------------
fas3040-201-25   /vol/vol1/lun1   /dev/sdu    host1      FCP        5g      7
fas3040-201-25   /vol/vol2/lun2   /dev/sdt    host1      FCP        5g      7
fas3040-201-25   /vol/vol3/lun3   /dev/sds    host1      FCP        5g      7

Clustered Data ONTAP with iSCSI: Example of using sanlun to display DM-Multipath information

The following examples show the output from the sanlun lun show -p command and the sanlun lun show all in a Host Utilities environment that is running clustered Data ONTAP with iSCSI and DM-Multipath. The output is the same regardless of whether you are using a software iSCSI initiator or hardware iSCSI initiator.

The first example uses the sanlun lun show -p command. The output from the command shows that DM-Multipath (Multipath Provider: Native) is configured.

# sanlun lun show -p 
                    ONTAP Path: vs_data28_2:/vol/vol1/lun1
                           LUN: 2
                      LUN Size: 3g
                          Mode: C
                   Host Device: 3600a09803246664c422b2d51674f7470
              Multipath Policy: round-robin 0
            Multipath Provider: Native
--------- ---------- ------- ------------ -------------------------------------
host      vserver
path      path       /dev/   host         vserver
state     type       node    adapter      LIF
--------- ---------- ------- ------------ -------------------------------------
up        primary    sdfo    host0        lif1
up        primary    sdfk    host0        lif2
up        primary    sdga    host1        lif3
up        primary    sdge    host1        lif4
up        secondary  sdgm    host1        lif5
up        secondary  sdgj    host0        lif6
up        secondary  sdfw    host0        lif7
up        secondary  sdgq    host1        lif8

This example uses the sanlun lun show all command. The output shows that the LUNs are mapped to clustered Data ONTAP in an environment using iSCSI.

# sanlun lun show all
controller(7mode)/              device       host                  lun
vserver(Cmode) lun-pathname     filename     adapter    protocol   size    mode
-------------------------------------------------------------------------------
vs_data78_1    /vol/vol1/lun1 	/dev/sdcx     host29     iSCSI      3g      C
vs_data78_0    /vol/vol2/lun2 	/dev/sdcw     host20     iSCSI      3g      C
vs_data79_1    /vol/vol3/lun3 	/dev/sdck     host14     iSCSI      3g      C

Data ONTAP operating in 7-Mode iSCSI: Example of using sanlun to display DM-Multipath information

The following examples show the output from the sanlun lun show -p command and the sanlun lun show all in a Host Utilities environment that is running Data ONTAP operating in 7-Mode with iSCSI and DM-Multipath. The output is the same regardless of whether you are using a software iSCSI initiator or hardware iSCSI initiator.

The first example uses the sanlun lun show -p command. The output from the command shows that DM-Multipath (Multipath Provider: Native) is configured.

# sanlun lun show -p 
                    ONTAP Path: f3170-201-37:/vol/vol1/lun1
                           LUN: 5
                      LUN Size: 6g
           Controller CF State: Cluster Enabled
            Controller Partner: f3170-201-36
                          Mode: 7
                   Host Device: 360a98000572d5a74526f6374342f5658
              Multipath Policy: round-robin 0
            Multipath Provider: Native
--------- ---------- ------- ------------ --------------------------------
host      controller                      controller
path      path       /dev/   host         target
state     type       node    adapter      port
--------- ---------- ------- ------------ --------------------------------
up        iscsi      sdh     host8        10.72.201.37
up        iscsi      sdp     host10       192.168.100.37

This example uses the sanlun lun show all command. The output shows that the LUNs are mapped to Data ONTAP operating in 7-Mode in an environment using iSCSI.

# sanlun lun show all
controller(7mode)/               device      host                  lun
vserver(Cmode)   lun-pathname    filename    adapter    protocol   size    mode
-------------------------------------------------------------------------------
fas3040-201-24   /vol/vol1/lun1  /dev/sdb    host6      iSCSI      10m     7
fas3040-201-24   /vol/vol2/lun2  /dev/sdb    host6      iSCSI      10m     7
fas3040-201-24   /vol/vol3/lun3  /dev/sdb    host6      iSCSI      10m     7