In our lab environment we are fortunate to have an EMC NS-120.  Unfortunately we do not have iSCSI modules for it. In order for our non-fibre channel VMware hosts to access these LUNs we are forced to share them though a Celerra NAS appliance.

As you can see I have several initiators that need their LUN Masks changed. In order to change them through the GUI I would have to click properties on each initiator, change the Grant LUNs field and click OK.

There must be a quicker way!

Browsing the EMC Powerlink support site I stumbled across this little gem of information. All of the commands run by the GUI are logged in this file: /nas/log/cmd_log

I changed the LUNs granted on one of the initiators and the log file showed me that the command is:

server_iscsi server_2 -mask -set EMC01 -initiator iqn.1998-01.com.vmware:ucs01 -grant 1-2

Unfortunately there is no Grant ALL command, but I found that using the command line was much faster than using the GUI! For further information here is the information provided by server_iscsi – help:

usage: server_iscsi { <movername> | ALL }

-target {

-alias <alias_name> [-Q <iscsi_name>]

-create [<pg_tag>:np=<np_list> [<pg_tag>:np=<np_list> …]]

| -delete <alias_name>

| -rename <old_alias_name> <new_alias_name>

| -bind <alias_name> <pg_tag>:np=<np_list>

| -unbind <alias_name> { <pg_tag> | np=<np_list> }

| -info { <alias_name> | -all }

| -stat { <alias_name> | -all }

| -list

}

| -lun {

-number <lun_number>

-create <target_alias_name> -size <size>[M|G|T] -fs <fs_name>

[ -vp {yes|no} ] [ -readonly {yes|no} ]

| -extend <lun_number> -target <target_alias_name> -size <size>[M|G|T]

| -delete <lun_number> -target <target_alias_name>

| -info { <lun_number> | -all } [-target <target_alias_name>]

| -stat { <lun_number> | -all } [-target <target_alias_name>]

| -modify <lun_number> -target <target_alias_name> -readonly {yes [-Force] | no}

| -list [-target <target_alias_name>]

}

| -mask {

-list [<target_alias_name>]

| -info <target_alias_name> {-initiator <initiator_name> | -all }

| -set <target_alias_name> -initiator <initiator_name>

{ -grant <access_list>

| -deny <access_list>

}

| -clear <target_alias_name> -initiator <initiator_name>

}

| -ns isns

{ -info

| -set { -server <IP>[:<port>] | -esiport <port> }

| -clear { -server | -esiport | -all }

}

| -service { -start | -stop | -status }

| -snap {

-list [ -target <target_alias> [ -lun <lun_number> ] ]

| -info <snap_name>

| -create -target <target_alias_name>

-lun <lun_number>

[ -data <app_data> ]

| -modify <snap_name> -data <app_data>

| -delete { <snap_name> | -target <target_alias_name> -lun <lun_number> }

[ -Force ] }

| -restore <snap_name>

| -promote <snap_name> -initiator <initiator_name>

| -Demote <snap_name> [ -Force ]

}

| -help