T Ask 4: C Reate And C Onfigure D Evices - Asus DS300j G2 Series User Manual

v m l
erIfyInG the oDuleS are oaDeD
To verify that the DM-MP modules are loaded:
1. Open a terminal window.
2. Verify that the multipath module is loaded.
# lsmod | grep dm_multipath
If the module is loaded, the system returns:
dm_multipath 215770
(or a similar message)
3. Verify that the device mapper module is loaded.
# lsmod | grep dm_mod
If the module is loaded, the system returns:
dm_mod 56537 8 dm_snapshot...
(or a similar message)
v D r
erIfyInG the aemon IS unnInG
To verify that the MP daemon is running:
1. Open a terminal window.
2. Check the daemon's status.
# /etc/init.d/multipathd status
3. Do one of the following actions:
• If the system returns:
multipathd is running
(or a similar message)
Go to "Task 4: Create and Configure Devices" on page 480.
• If the system returns:
multipathd is stopped
(or a similar message)
Start the MP daemon.
# /etc/init.d/multipathd start
Then go to Task 4: Create and Configure Devices.
250
t 4: C C
ask reate and onfIGure
This step applies the settings from the multipath.config file to the Host.
1. Open a terminal window.
2. Type the following command and press Enter :
#multipath -v3
The system returns:
...
==== paths list ====
uuid hcil dev dev_t pri dm_st chk_st vend...
222490001555459b3b 2:0:0:0 sdb 8:16 1 [undef][undef] Prom...
222b40000155a75b49 2:0:0:2 sbc 8:32 1 [undef][undef] Prom...
20efcff5501000121a 3:0:0:0 sbd 8:48 1 [undef][undef] Prom...
222b44000155ebf0c 3:0:0:1 sde 8:64 1 [undef][undef] Prom...
params = 1 que_if_no_path 0 1 1 round-robin 0 1 1 8:64 100
status = 1 0 0 1 1 A 0 1 0 8:64 A 0
sde: mask = 0x4
sde: path checker = readsector0 (controller setting)
sde: state = 2
...
(or a similar message)
3. Restart the MP daemon.
#/etc/init.d/multipathd restart
The system returns:
Stopping multipathd daemon
(or a similar message)
Starting multipathd daemon
(or a similar message)
For more information about path monitoring functions, type help and press Enter .
DS300f G2 Series User Manual
d
evICes