사용환경
CentOS Linux release 6.5 64bit, Minimal version
EMC powerpath
1. naviagentcli 설치
naviagentcli rpm 패키지가 있는 디렉토리로 이동하여, 패키지를 설치한다.
# yum install ./naviagentcli-6.26.32.0.72-1.noarch.rpm Loaded plugins: fastestmirror S... Installed: naviagentcli.noarch 0:6.26.32.0.72-1 Complete!
navisphere agent를 실행한다.
# /etc/init.d/naviagent start Starting Navisphere agent: [ OK ]
2. powerpath 설치
rpm 패키지가 있는곳으로 이동하여, 아래 커맨드를 실행한다.
# yum install ./EMCPower.LINUX-5.7.1.00.00-029.RHEL6.x86_64.rpm
Loaded plugins: fastestmirror
Setting up Install Process
Examining ./EMCPower.LINUX-5.7.1.00.00-029.RHEL6.x86_64.rpm: EMCpower.LINUX-5.7.1.00.00-029.el6.x86_64
Marking ./EMCPower.LINUX-5.7.1.00.00-029.RHEL6.x86_64.rpm to be installed
...
...
NOTE:License registration is not required to manage the CLARiiON AX series array.
*** IMPORTANT ***
Please check the following configurations before starting PowerPath:
- Add _netdev to /etc/fstab mount options for PowerPath pseudo devices.
- Ensure netfs service is started.
netfs service is needed to mount devices with _netdev option.
- Set LVM filter in /etc/lvm/lvm.conf according to PowerPath recommendation.
- Blacklist all devices in /etc/multipath.conf and stop multipathd service.
- Install PowerPath license(s) and ensure that policy is not set to BasicFailover.
- If no license is available, ensure that only one HBA port is active in the host.
PowerPath supports only single-HBA configuration when unlicensed.
Refer to PowerPath Installation and Administration Guide for details.
Verifying : EMCpower.LINUX-5.7.1.00.00-029.el6.x86_64 1/1
Installed:
EMCpower.LINUX.x86_64 0:5.7.1.00.00-029.el6
Complete!
3. powerpath license key 등록
# emcpreg -install
4. powerpath 실행
# /etc/init.d/PowerPath start
5. 스토리지에서 LU할당하고 powermt 커맨드로 확인한다.
스토리지에서 LUN할당이 안된 상태이면, 아래처럼 device not found 메시지가 나온다.
# powermt config # powermt display Device(s) not found.
LUN을 할당하고, 할당한 lun을 scan 한다.
# echo "1" > /sys/class/fc_host/hostX/issue_lip
잠시 후, powermt config 커맨드로 디바이스를 만들어주면, 아래와 같이 디스크가 인식됨을 볼 수 있다.
# powermt config # powermt display CLARiiON logical device count=2 ============================================================================== ----- Host Bus Adapters --------- ------ I/O Paths ----- ------ Stats ------ ### HW Path Summary Total Dead IO/Sec Q-IOs Errors ============================================================================== 1 qla2xxx optimal 4 0 - 0 2
아래는 실제로 디스크가 어떻게 설정되었는지를 보여준다.
스토리지 LUN0 이 , 리눅스의 /devsdb, /dev/sdd 로 잡혔으며(2 path이므로), emcpowera 라는 이름으로 설정되었으며, LUN1은 emcpowerb 라는 이름으로 설정되었다.
<pre class="lang:sh highlight:0 decode:true " ># powermt display dev=all Pseudo name=emcpowera CLARiiON ID=APM00063706620 [Linux] Logical device ID=600601607F121A00FA518858817AE411 [LUN 0] state=alive; policy=CLAROpt; queued-IOs=0 Owner: default=SP B, current=SP B Array failover mode: 1 ============================================================================== --------------- Host --------------- - Stor - -- I/O Path -- -- Stats --- ### HW Path I/O Paths Interf. Mode State Q-IOs Errors ============================================================================== 1 qla2xxx sdb SP A1 active alive 0 1 1 qla2xxx sdd SP B1 active alive 0 1 Pseudo name=emcpowerb CLARiiON ID=APM00063706620 [Linux] Logical device ID=600601607F121A00BAEA18252080E411 [LUN 1] state=alive; policy=CLAROpt; queued-IOs=0 Owner: default=SP A, current=SP A Array failover mode: 1 ============================================================================== --------------- Host --------------- - Stor - -- I/O Path -- -- Stats --- ### HW Path I/O Paths Interf. Mode State Q-IOs Errors ============================================================================== 1 qla2xxx sde SP B1 active alive 0 0 1 qla2xxx sdc SP A1 active alive 0 0</pre>
6. 사용
이렇게 설정된 디스크중 emcpowerb를 사용하면 된다. lvm 볼륨으로 만들어서 사용해도 되고, 일반 디스크처럼 사용해도 된다.
화일시스템 생성전 blkid
# blkid /dev/sda1: UUID="6382e344-2171-4755-881c-b016ed006a64" TYPE="ext4" /dev/sda2: UUID="ca470579-109f-4e05-8774-43a05c5b5968" TYPE="swap" /dev/sda3: UUID="76645a7b-e902-4845-be0f-17af6549636a" TYPE="ext4" /dev/sdb: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs" /dev/emcpowera: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs" /dev/sdd: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs"
emcpowerb 에 xfs 타입의 화일시스템을 만든다.
# mkfs -t xfs /dev/emcpowerb
meta-data=/dev/emcpowerb isize=256 agcount=4, agsize=6553600 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=26214400, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=12800, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
# blkid
/dev/sda1: UUID="6382e344-2171-4755-881c-b016ed006a64" TYPE="ext4"
/dev/sda2: UUID="ca470579-109f-4e05-8774-43a05c5b5968" TYPE="swap"
/dev/sda3: UUID="76645a7b-e902-4845-be0f-17af6549636a" TYPE="ext4"
/dev/sdb: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs"
/dev/emcpowera: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs"
/dev/sdd: UUID="bff99383-e4bd-45ff-8506-b3aaf4c13cc7" TYPE="xfs"
/dev/sdc: UUID="80cba7b3-c059-46c5-8d81-1d1ccb3a99c6" TYPE="xfs"
/dev/sde: UUID="80cba7b3-c059-46c5-8d81-1d1ccb3a99c6" TYPE="xfs"
/dev/emcpowerb: UUID="80cba7b3-c059-46c5-8d81-1d1ccb3a99c6" TYPE="xfs"
화일시스템을 만들고, blkid를 보면, emcpowerb와 /dev/sdc, /dev/sde가 각각 같은 blkid를 가지는것을 확인 할 수 있다.
끝으로, 만들어진 화일시스템을 마운트하여 사용하면 된다.
# mount /dev/emcpowerb /mnt # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 131G 1.9G 122G 2% / tmpfs 2.9G 0 2.9G 0% /dev/shm /dev/sda1 190M 45M 136M 25% /boot /dev/emcpowerb 100G 33M 100G 1% /mnt