Error Cannot Open Powerpath. Initialization Error
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Job For Powerpath.service Canceled
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Starting Powerpath: Powerpath Could Not Load Module Emcp
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for Linux… LINUX: configure kdump to send kernel crash dump file to NFS server and analyse it LINUX: restore system with mondorestore utility (part of mondorescue package) on HP Smart Array Controller
Powerpath For Linux Installation And Administration Guide
VMWARE VMWARE: virtual disk performance seems to be very high and differs from powermt display dev=all other disks in virtual machine VMWARE SDK Perl: add virtual disk to virtual machine VMWARE SDK Perl: create distributed virtual portgroups with VLAN ID VMWARE SDK Perl: clone virtual machine from template and customize network settings (linux guest) VMWARE: network guest issue during a storage vmotion operation VMWARE: PowerPath/VE installation on ESXi 5.1 (CLI https://access.redhat.com/solutions/1202593 mode) VMWARE: add many shared rdm virtual disks between two or more virtual machines VMWARE: Change native multipathing algorithm on ESXi 4.1 from fixed to Round-Robin HARDWARE HW: create server's profiles on HP Virtual Connect FlexFabric (with CLI) SITEMAP MISC AWK: how to compare two software versions LINUX: Why I don't like PowerPath for Linux… Home LINUX: Why I don't like PowerPath for Linux… February 9, 2013 https://www.lincvz.info/2013/02/09/linux-why-i-dont-like-powerpath-5-7-for-linux/ 9 LINUX: Why I don't like PowerPath for Linux… Tags : LinuxpowerpathRHEL6 Category : GNU/LINUX CONTEXT Because of my company migrated SAN infrastructure to a virtualized solution (EMC VPLEX Metro), I needed to test and validate PowerPath 5.7 installation on a RedHat Enterprise Linux 6 (physical) server . PowerPath is required to use efficiently two EMC array (one is local site, other is remote site). Remote paths (called X-connect) must be set in standby mode (maybe possible and difficult withlinux native multipathing), due to overhead latency. More information in a PDF (EMC web site). Here is an architecture overview : POWERPATH INSTALLATION 1) RPM downloaded seems to be relocatable : [root@santiago1 tmp]# rpm -qi EMCpower.LINUX-5.7.1.00.00-029.el6.x86_64 Name : EMCpower.LINUX Relocations: / Version : 5.7.1.00.00 Vendor: EMC, Inc. Release : 029.el6 Build Date: Mon 12 Nov 2012 04:20:27 PM CET Install Date: Fri 01 Feb 2013 11:09:46 AM CET Build Host: lppc104.lss.emc.com Group : System Environment/Kernel Source RPM: EMCpower.LINUX-5.7.1.00.00-029.el6.src.rpm Size : 63896857 License: Copyright (c) 2002-2012, EMC Corporation. All Rights Reserved. Signature : (none) Summary : EMC PowerPath Description : But postscriplet isn't .. : [root@santiago1 tmp]# rpm -ivh EMCPower.LINUX-5.7.1.00.00-029.RHEL6.x86_64.rpm --relocate /=/usr/local/ Preparing... ######################################
Answer: Before you start EMC powerpath installation and configuration, make sure HBA cards are installed on the server and Fiber channel switches are zoned properly. 1. Install EMC Powerpath on Linux Download the Powerpath software from EMC powerlink website. If you've purchased EMC support, you should have access to powerlink. In the following example, EMC Powerpath 5 ( EMCpower.LINUX-5.3.0.00.00-185.rhel5.i386.rpm ) is installed on Red Hat 5. (for CLARiiON Array) # rpm -ivh EMCpower.LINUX-5.3.0.00.00-185.rhel5.i386.rpm --test Preparing... ########################################### [100%] # rpm -ivh EMCpower.LINUX-5.3.0.00.00-185.rhel5.i386.rpm Preparing... ########################################### [100%] 1:EMCpower.LINUX ########################################### [100%] All trademarks used herein are the property of their respective owners. NOTE:License registration is not required to manage the CLARiiON AX series array. 2. Register EMC Powerpath Before you can use the EMC powerpath software, you should register it using the EMC Powerpath License key received when you purchased the software from EMC. Use emcpreg tool to install EMC Powerpath license key as shown below. # emcpreg -install =========== EMC PowerPath Registration =========== Do you have a new registration key or keys to enter?[n] y Enter the registration keys(s) for your product(s), one per line, pressing Enter after each key. After typing all keys, press Enter again. Key (Enter if done): **emc-powerpath-license-key** 1 key(s) successfully added. Key successfully installed. Key (Enter if done): Key is invalid, ignored. Try again or press Enter if done. 1 key(s) successfully registered. 3. Verify EMC Powerpath Registration Use EMC powermt command to check the registration as shown below. # powermt check_registration Key **emc-powerpath-license-key** Product: PowerPath Capabilities: All 4. Verify Multiple Paths Once you've installed EMC powerpath, execute powermt display dev=all as shown below to verify whether multiple paths as displayed accordingly. # powermt display dev=all P