EMC PowerPath for AIX Version 5.3 Installation

Mei 5, 2010 at 9:01 am 1 komentar


EMC PowerPath
sponsored by EMC Corporation

Product Description
EMC PowerPath is a server-resident software solution that enhances performance and information availability. It integrates multiple path I/O capabilities, automatic load balancing, and path failover functions into one comprehensive package for use on open server platforms connected to Symmetrix enterprise storage systems. PowerPath enables you to do more work in a shorter time so you can serve more customers, run more applications, and exploit more business opportunities.
With EMC PowerPath:

Multiple channels share the I/O workload
Intelligent multipath load balancing ensures that channels are utilized in the most efficient manner possible
Automatic path failover keeps information flowing in the event of a failure.
Type: Software

 EMC PowerPath for AIX Version 5.3 Installation
 
=============================
Mounting the installation CD
=============================

To mount the PowerPath installation CD:
1. Log in as root.
2. Create the directory /cdrom to be the mount point for the CD:
mkdir /cdrom
3. Insert the PowerPath installation CD into the CD-ROM drive.
4. Mount the CD on /cdrom:
mount -v cdrfs -p -r /dev/cd0 /cdrom
5. Change to the /cdrom/UNIX/AIX directory:
cd /cdrom/UNIX/AIX
6. Do one of the following:

====================================
Installing by using the command line
====================================

Note: You must enable the adapter driver fast_fail feature. To do this, type
chdev -l fscsiX -a fc_err_recov=fast_fail -P, then reboot.
To install PowerPath by using command line entries:
1. Mount the CD in the CD-ROM drive and change to the
/cdrom/UNIX/AIX directory as described in “Mounting the
installation CD” on page 20.
2. Install the software. Type:
installp -agXd . EMCpower
Note: The man page for the installp command describes optional flags
for the command.
Output similar to the following appears:

+—————————————————————————–+
Summaries:
+—————————————————————————–+
Installation Summary
——————–
Name Level Part Event Result
——————————————————————————-
EMCpower.base 5.3.0.0 USR APPLY SUCCESS
EMCpower.migration_enabler 5.3.0.0 USR APPLY SUCCESS
EMCpower.mpx 5.3.0.0 USR APPLY SUCCESS
EMCpower.consistency_grp 5.3.0.0 USR APPLY SUCCESS
EMCpower.encryption 5.3.0.0 USR APPLY SUCCESS
PowerPath is installed on the host, but before PowerPath can run,
you must perform some administrative tasks (including registering
PowerPath). “After you install” on page 24 provides postinstallation
information.

=========================
Installing by using SMIT
=========================

The SMIT (System Maintenance Interface Tool) procedure described
in this section assumes you are running the XWindow System
version of SMIT. You can use the tty version of SMIT, provided you
substitute the appropriate tty SMIT procedures.
Note: You must enable the adapter driver fast_fail feature. To do this, type
chdev -l fscsiX -a fc_err_recov=fast_fail -P, and then reboot.

————————————
To install PowerPath by using SMIT:
————————————
1. Mount the CD in the CD-ROM drive and change to the
/cdrom/UNIX/AIX directory as described in “Mounting the
installation CD” on page 20.
2. Run smit to open SMIT.
3. On the main SMIT window, click Software Installation and
Maintenance.
4. On the Software Installation and Maintenance window, click
Install and Update Software.
5. On the Install and Update Software window, click Install
Software.
6. For INPUT device / directory for software, type the following:
/cdrom/UNIX/AIX
7. Click List to open the list of software to install.
8. Select the first line in the list, EMCpower ALL, and press Enter.
The Install Software dialog box opens.
9. Review the installation options, make any necessary changes, and
click OK.
10. When prompted, click OK.

Output similar to the following appears:
+—————————————————————————–+
Summaries:
+—————————————————————————–+
Installation Summary
——————–
Name Level Part Event Result
——————————————————————————-
EMCpower.base 5.3.0.0 USR APPLY SUCCESS
EMCpower.migration_enabler 5.3.0.0 USR APPLY SUCCESS
EMCpower.mpx 5.3.0.0 USR APPLY SUCCESS
EMCpower.consistency_grp 5.3.0.0 USR APPLY SUCCESS
EMCpower.encryption 5.3.0.0 USR APPLY SUCCESS

11. Select Exit SMIT from the Exit menu to close SMIT.

PowerPath is installed on the host, but before PowerPath can run,
you must perform some administrative tasks (including
registering PowerPath for first time users). “After you install”
=======================
Installing the tar file
=======================

————————————————————-
To download from Powerlink and unzip the compressed tar file:
————————————————————-
1. On Powerlink, select Support > Software Downloads and
Licensing > Downloads P-R > PowerPath for AIX.
2. Download the tar file to /usr.
3. Unzip the installation package. Type:
gunzip EMCpower.AIX.5.3.0.GA.tar.gz
4. Extract EMCpower_install. Type:
tar -xvf EMCpower.AIX.5.3.0.GA.tar.gz
5. Perform one of the following:
• For an existing PowerPath installation, run rm.toc to delete the
.toc file.
• For new PowerPath installations, skip to Step 6 on page 23.
6. Install the software. Type:
installp -agXd . EMCpower
7. Run powermt config.

PowerPath is installed on the host, but before PowerPath can run,
you must perform some administrative tasks (including registering
PowerPath for first time users).

————————————————————————————-
=================
After you install
=================

—————————————-
After installing the PowerPath software:
—————————————-
? “Register PowerPath on the host (first-time installation only).
? “Install a PowerPath service pack”
? “Choose a major number”
? “Initialize PowerPath hdiskpower devices”
? “Remove the CD”
? “Configure the management daemon”
? “Vary on volume groups”
? “Reconfigure applications”
================================
? Register PowerPath on the host
================================

Note: If you are upgrading from an earlier version of PowerPath, you do not
need to reregister. PowerPath will use your existing license key if necessary,
converting the old 12-character license key to a 24-character key.

———————————–
To register the PowerPath software:
———————————–
1. Type the following:
   emcpreg -install

   Output similar to the following appears:

=========== EMC PowerPath Registration ===========
Do you have a new registration key or keys to enter? [n]
2. Type y and press Enter.

   Output similar to the following appears:

Enter the registration key(s) for your product(s),
one per line, pressing Enter after each key.
After typing all keys, press Enter again.
Key (Enter if done):

3. Type the PowerPath registration key and press Enter. You can
   also add keys for other technologies, such as PowerPath
   Migration Enabler or PowerPath Encryption with RSA.

If you typed a valid registration key, output similar to the
following appears:

1 key(s) successfully added.
Key successfully installed.
Key (Enter if done):
If you type an invalid registration key, the screen displays an
error message and prompts you to type a valid key. The EMC
PowerPath Family CLI and System Messages Reference Guide
provides a list of error messages returned by the emcpreg license
registration utility.
4. Press Enter.

   Output similar to the following appears:

1 key(s) successfully registered.

==================================
? Install a PowerPath service pack
==================================

————————————
To install a PowerPath service pack:
————————————
1. On Powerlink, select Support > Software Downloads and
   Licensing > Downloads P-R > PowerPath for AIX.
2. Download the tar file to /usr.
3. Unzip the installation package. Type:
   gunzip EMCpower.AIX.5.3.SPx.bxxx.tar.gz
4. Extract EMCpower_install. Type:
   tar -xvf EMCpower.AIX.5.3.SPx.bxxx.tar.gz
5. Perform one of the following:
   • For an existing PowerPath installation, run rm.toc to delete the
     .toc file.
   • For new PowerPath installations, skip to Step 6 on page 23.
6. Install the software. Type:
   installp -agXd . EMCpower
7. Run powermt config.

=======================
? Choose a major number
=======================

By default, PowerPath uses a system-assigned major number for its
pseudo devices. To support NFS applications in a clustered
environment, the major number of PowerPath pseudo devices (for
example, /dev/*hdiskpower*) must be the same across all cluster
nodes. This must be a unique major number that is unused by any
host in the cluster.

————————-
To choose a major number:
————————-
1. Determine a free major number common to all nodes. On each
   node in the cluster, type:
   lvlstmajor
   Compare the free ranges on each node to find a major number
   that is unused on any node.
2. Change the major number of the powerpath0 device. On each
   node in the cluster, type:
   chdev –l powerpath0 –a pp_major=x
   where x is the major number you found in step 1.
3. Verify the change. On each node in the cluster, type:
   lsattr -El powerpath0

The major number will take effect after you run the powermt config
command on each node in the cluster. “Initialize PowerPath hdiskpower devices”

===========================================
? Initialize PowerPath hdiskpower devices
===========================================

Initialize the PowerPath hdiskpower devices and make them
available to the host. You can initialize devices by using either
command line entries or SMIT.

To initialize devices at the command line, type:
powermt config

————————————
To initialize devices by using SMIT:
————————————
1. Open SMIT by typing smit.
2. On the System Management window, select Devices.
3. Select PowerPath Disk.
4. Select Configure All PowerPath Devices.
5. Exit SMIT.
=================================
? Remove the CD To remove the CD:
=================================

1. Unmount the CD, by typing:
   cd /umount /cdrom
2. Remove the CD from the CD-ROM drive.
==================================
? Configure the management daemon
==================================

After the version of PowerPath that supports the management
daemon is installed on the host, configure the management daemon.
Configuring the management daemon allows you to receive SNMP
traps when a path is dead for one minute, or when all paths to a
device are dead for five minutes.

=======================
? Vary on volume groups
=======================

Vary on any existing LVM volume groups that you varied off before
installing PowerPath:
1. Run the command varyonvg vgname.
2. Remount any file systems you unmounted.
3. Restart any applications you stopped.

You do not need to reconfigure these volume groups. The installation
procedure migrates existing volume groups that use storage system
devices from AIX hdisks to PowerPath hdiskpower devices.
Note, however, that if you failed to vary off a volume group before
installing PowerPath, this migration will fail. You will be able to vary
off the volume group, but any vary on attempts may result in errors.

To correct this state:
1. Vary off the volume group.
2. Run powermt config.

The varyonvg command should now succeed, and the volume group
should be using hdiskpower devices.

When defining new volume groups, use PowerPath hdiskpower
devices, not AIX hdisk devices.

==========================
? Reconfigure applications
==========================

If an application accesses AIX hdisks directly, rather than through a
volume group (a DBMS, for example), you must reconfigure that
application to use PowerPath hdiskpower devices if you want
PowerPath load balancing and path failover functionality. Run
powermt display dev=all to determine the correspondence between
PowerPath hdiskpower devices and AIX hdisk devices.

Note: You do not need to reconfigure applications that access hdisks through
            a volume group.

When adding new applications to your system that typically would
access hdisks directly, configure them to use hdiskpower devices
instead.

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