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Lun Masking
LUN MASKING USING VCM database
In previous session total 15 devices have been created and are
made visible
to hosts through mapping.
Once the Luns are mapped, to enable host to access and perform
I/O and
hide the Luns from unwanted hosts, the Luns should be
masked.
To mask the Luns, !" database should be created and the
information
related to Luns and the hosts should be updated to !"
database
#edicate a drive to !" database $In our scenario it is
%%%%&
LAB EXERCISE
1& create a command file 'un1( vi m)vcm set device %%%%
attribute *vcmdb+
w-
& un s)mconfigure
'un1( s)mconfigure 0sid 2v 0f m)vcm 2commit 0nop
3& 4pdate s)mapi.db 'un1( s)mcfg discover
6& start vcmdb
(Strictly prohibited to use, it makes all hosts unreachable to
storage)
'un1( s)mmask db 0sid init 0f m)vcm
5& List masked devices
'un1(s)mmaskdb list database
7& #ispla) 89: 'un1(s)mmask list hba
& #iscover 89:
'un1(s)mmask discover hba
8) :ssign lun to 'un1 and update vcmdb
'un1(s)mmask 0sid add dev %%%1 0wwn 1%%%%%%% 2p % 0dir 17c
'un1(s)mmask 0sid add dev %%%1 0wwn 1%%%%%%% 2p % 0dir 15c
'un1(s)mmask 0sid add dev %%%1 0wwn 1%%%%%%% 2p % 0dir 1c
'un1(s)mmask 0sid add dev %%%1 0wwn 1%%%%%%% 2p % 0dir c
;& efresh the database
'un1( s)mmask refresh
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10) !reate an alias to host wwn 2 To check the wwn number of
host
'un1( fcinfo or s)mmask list hba
2 To create an alias
'un1(s)mmask 0sid 0wwn 1%%%%%%%%%% rename 'un1/port%
2 efresh the database
'un1( s)mmask refresh
11) !heck the status of ports and enable vcm flag if disabled
'un1( s)mcfg 0sid 0v list 2p % 2sa 1c 'un1( s)mcfg 0sid 0v list 2p
% 2sa c
'un1( s)mcfg 0sid 0v list 2p % 2sa 17c 'un1( s)mcfg 0sid 0v list
2p % 2sa 15c
$Note: Participants are requested, not to execute the steps to
enable VC!lags on ports in lab sessions as they raise
complications, please !ollo"
the demo by y our instructor attenti#ely)
12) create a command file to enable vcm port flag on all ports,
before runningthe configuration ,make sure the concerned port is
offline, once the configurationis save, bring the port online
On director c !ort"
a& !reate a command file
'un1( vi vcmport 'et port 1c
