Configuration and Tuning GPFS for Digital Media ... - IBM Redbooks

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LDAP The OpenLDAP service installed on the Admin Server, where the accounts for the administrators are kept. Database Represented by the MySQL database, where among other things the logging and configuration data for the OESV environment is saved. OpenAFS The filesystem OpenAFS, where the actual user data is stored. The graphical administration interface (GUI) is based on Java and is used to manage the OESV environment. This GUI can be installed on the administrators PC or a notebook, where Windows 2000 or XP are supported client operating systems. The GUI is separated in several "modules" which are used to manage the system, like Samba ("Share Module"), Logging, CUPS (Printing), Virtual Host Management, Performance Analysis and AFS® Administration. The architecture of OESV is shown in Figure 1-15. Admin Server Frontend Server Backend Server AFS server Figure 1-15 Open Enterprise System Virtualization (OESV) architecture More info related to OESV can be found at: http://www.ibm.com/services/de/index.wss/offering/its/a1007687 Substituting the backend server layer with the General Parallel File System (GPFS), allows for combining the advantages of both environments. OESV offers the virtualization of services, like Samba, NFS, etc., while GPFS allows the environment to scale horizontally among servers, storage and network 28 Configuration and Tuning GPFS for Digital Media Environments IP1 print IP2 File IP3 web AFS server IP4 …. AFS server Linux Admin server Mgmt. Tools MySQL LDAP OpenAFS client Linux Samba Apache …… Endpoint' Stonemonitor' OpenAFS client AIX / Linux Endpoint" Stonem onitor' OpenAFS server
components. This fulfils the requirements for increased productivity, availability, less maintenance, simplified management, and also high scalability and performance demands in a digital media environment. Figure 1-16 depicts a simplified OESV view from customer’s perspective: File service Web service Print service Figure 1-16 Customer requirements Enough hardware to handle it Storage virtualization layer Just enough storage LAN Chapter 1. Introduction to digital media 29
Page 1: Configuration and Tuning GPFS for D
Page 4 and 5: Note: Before using this information
Page 6 and 7: 2.2.8 Quorum rules . . . . . . . .
Page 8 and 9: Abbreviations and acronyms . . . .
Page 10 and 11: Trademarks The following terms are
Page 12 and 13: Dag Wieers is a Linux and Open Sour
Page 14 and 15: Comments welcome Your comments are
Page 16 and 17: xiv Configuration and Tuning GPFS f
Page 18 and 19: 1.1 What is digital media? Digital
Page 20 and 21: Create Manage Distribute Transact F
Page 22 and 23: investments. And integration of dig
Page 24 and 25: 1.3.3 Broadcasting Table 1-2 Video
Page 26 and 27: 1.4 Broadcasting Within IBM this is
Page 28 and 29: 2. By using standard IT based compo
Page 30 and 31: Note: We are using the term offerin
Page 32 and 33: ► Streaming - Found in Digital Me
Page 34 and 35: These issues lead to the following
Page 36 and 37: ► Library Manager (LM) The LM pro
Page 38 and 39: ADMIRA does not provide the complet
Page 40 and 41: Storage-Layer Work-Layer Communicat
Page 42 and 43: ► Maintenance without downtime IB
Page 46 and 47: 30 Configuration and Tuning GPFS fo
Page 48 and 49: 2.1 GPFS history and evolution The
Page 50 and 51: 2.1.1 Why choose GPFS? This section
Page 52 and 53: RPC services Other Nodes Configurat
Page 54 and 55: 2.2.3 GPFS block allocation GPFS us
Page 56 and 57: a file (read or write) if it holds
Page 58 and 59: Token Token received received for f
Page 60 and 61: ► minMissedPingTimeout Minimum am
Page 62 and 63: lease missed lease renewal CfgMgr d
Page 64 and 65: Note: Whenever possible, we recomme
Page 66 and 67: 4 Request for accessing a file 1 no
Page 68 and 69: Data LUN0 In order to assure file a
Page 70 and 71: Data LUN0 2.2.8 Quorum rules 2 3’
Page 72 and 73: File system descriptor For maintain
Page 74 and 75: General Parallel File System Failur
Page 76 and 77: allocated at daemon start-up. The p
Page 78 and 79: Figure 2-19 GPFS prefetch 2.2.10 GP
Page 80 and 81: choices. Option two is using NSD on
Page 82 and 83: Application Node With GPFS Daemon A
Page 84 and 85: High SPEED IP INTERCONNECT GbE, 10G
Page 86 and 87: ► Application (compatibility, blo
Page 88 and 89: - DS4500: At the time this book was
Page 90 and 91: command node influencing / node rel
Page 92 and 93: command node influencing / node rel
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performance impacting commands mmrp
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80 Configuration and Tuning GPFS fo
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3.1 General considerations for inst
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System component # Type Feature Hos
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2109-F32 (switch1) 2109-F32 (switch
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Figure 3-4 DS4500 - Save the storag
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► Configuration for data LUNs: -
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Note: For performance and availabil
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GPFS_metadata2 1 B Host Group GPFS-
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Figure 3-8 DS4500 Storage Manager G
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3.2.4 Servers zoning configuration
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Figure 3-10 LPAR profile of p5 550
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The second network will be used as
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Once the Linux operating system has
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Figure 3-14 SLES9-yast-setup - Inst
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Figure 3-16 Final installation conf
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For example, if storage (LUNs, mask
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Important: If RDAC/MPP is used, a n
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INITRD_MODULES="ipr lpfcdd" where
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An easy way to verify that the crea
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proc/mpp/DS4500_1/controllerA: tota
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Type: Direct-Access ANSI SCSI revis
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problem with the GPFS cluster if DN
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3.3.5 Time synchronization Check th
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Windows client time synchronization
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► Save the changes to site.mcr fi
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* Descriptions and downloads for th
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The disk descriptor file contains a
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The pagepool parameter changes the
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Example 3-25 Output of mount comman
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138 Configuration and Tuning GPFS f
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4.1 Linux multipathing The term mul
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The Figure 4-3 shows the RDAC drive
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Note: We recommend that you save a
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► Make sure the mppUpper module i
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Attention: We have tested the devic
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kernel 2.6 user space kernel space
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The order of the device maps indica
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devices { device { vendor "IBM " pr
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use of classic remote shell (rsh),
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4.4 NFS Windows network protocol th
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If everything loaded correctly, you
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Forcing the NFS version When mounti
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First prevent the NFS server from s
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4.5 Additional GPFS management task
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Copy the resulting kernel modules f
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Then proceed to removing the GPFS p
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5.1 Performance tuning cycle Tuning
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ehave differently, number of worklo
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Attention: If the data availability
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The two impacting tuning areas for
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Table 5-2 Overview of useful networ
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# mmcrfs /gpfs /dev/gpfs -F -A no
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## The value of the 'prefetchThread
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5.2.5 Tuning the clients In a DM en
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Registry parameter Default Suggeste
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command nfsstat X X X nmon X X X X
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The default Dconf configuration fil
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FILES = ( /etc/gpfs/shmux /root/.ss
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Detaching from and re-attaching to
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you plan to run commands on subsets
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In addition, dstat also has GPFS re
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- Number of open()/create() gpfs ca
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gpfsperf carefully, as gpfsperf is
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Data rate was 204784.35 Kbytes/sec,
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4. Using strace on Linux to analyze
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Filename Description /var/mmfs/gen/
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A.1 Automatic network installation
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Tip 1: An entry in the arp cache is
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Figure A-1 YaST Installation Server
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Instead of using the BladeCenter®
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AIX and Linux [p630n01][/etc/ssh]>
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Example: A-9 Sample ~/.ssh/authoriz
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A.8 SLES9 Installation on an IBM eS
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NVSRAM version: None Transferred on
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GPFS_data4 (271,463 GB) Associated
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DETAILS Logical Drive name: GPFS_da
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2. The metadata describing the esse
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extent such a system can scale the
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Archiving/Annotation Functionality
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the physical disk. In case of cache
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This configuration file will expect
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How to get IBM Redbooks Help from I
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DMC 13 dm-multipath 149 DNS 122 dra
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nfsver 162 NLE 8, 10 no_root_squash
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Configuration and Tuning GPFS for D
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