HP StorageWorks 500 G2 Modular Smart Array User Manual
Page 29
\_ 1:0:0:2 sdag 66:0 [ready ][active]
\_ 0:0:0:2 sdc 8:32 [ready ][active]
5.
Ensure that the MSA500 G2 storage system contains two identical MSA500 G2 controllers
connected to the same logical volume.
6.
To create multipath device /dev/md0, enter the following command:
mdadm -–create -–level multipath –n 2 /dev/md0 /dev/cciss/c1d0p2
/dev/cciss/c2d0p2
7.
To review the status, enter the following command:
mdadm –D /dev/md0
The output displayed must be similar to the following:
/dev/md0
Version : 00.90.00
Creation Time : Mon Apr 29 09:15:00 2003
Raid Level : multipath
Array Size : 14683328 (14.00 GiB 15.08 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Apr 29 09:02:00 2003
State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Number Major
Minor
RaidDevice
State
0 106
2
0
active sync
/dev/cciss/c2d0p2
1 105
2
1
active sync
/dev/cciss/c1d0p2
UUID : b1ec5895:5ed49b44:7ec7d4a8:397e19b1
IMPORTANT:
You can also review status by entering the following command:
cat /proc/mdstat
The output displayed must be similar to the following:
Personalities : [multipath]
read_ahead 1024 sectors
md0 : active multipath cciss/c2d0p2[0] cciss/c1d0p2[1]
14683328 blocks [2/2] [UU]
unused devices :
8.
To format the volume, enter the following command:
mkfs –t ext2 /dev/md0
9.
To mount the volume, enter the following command:
mount /dev/md0 /spare_filesystem
10.
To make md device available after reboot, enter the following command: devicen>’> /dev/mdadm.conf mdadm-detail-scan>>/etc/mdadm.conf For more information on the mdadm command, enter the following command: man mdadm Configuration is complete. Smart Array Multipath software user guide 29
echo ’DEVICE