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Sun Microsystems 2.1 manual Introduction

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C H A P T E R 1

Introduction

Introduction	page 1-1

Sun MediaCenter Hardware	page 1-2

Sun MediaCenter Software	page 1-4

Video Output Interfaces	page 1-8

Content Preparation and Loading	page 1-10

Server Management	page 1-11

Push Model	page 1-11

Design Beneﬁts	page 1-12

1.1Introduction

The Sun MediaCenter server is a combination of standard server hardware and special software that is optimized for and dedicated to the storage and delivery of video streams. The special software includes:

■a modiﬁed Solaris kernel;

■modiﬁed network interface drivers, dedicated to continuous-media output;

■a Media File System (MFS), optimized for the demands of the delivery of isochronous bit streams;

■a Media Stream Manager (MSM), which includes an RPC-based API, that provides users access to the server;

1-1

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Sun Microsystems 2.1 manual Introduction

Contents

Release Sun MediaCenter Server Administrator’s GuideA Sun Microsystems, Inc. Business 901 San Antonio Road Palo Alto, CA 94303 USA 415 960-1300 fax 4151997 Sun Microsystems, Inc. All rights reserved 2. Preparing and Loading Content Contents1. Introduction iv Sun MediaCenter Server Administrator’s Guide December 4. Moving Content3. Monitoring the Server 6. Sun MediaCenter Server FTP Daemon 5. Sun MediaCenter Server Utilitiesvi Sun MediaCenter Server Administrator’s Guide December 8.2.1 mfs df 8.2.2 mfs diskusg 8.2.3 mfs repair 8.2.4 mkmfs10. Troubleshooting 9. Access Control ListsA. Setting up the SNMP Agent B. Creating a Content Package B-1Glossary Glossary-1 Index Index-1 viii Sun MediaCenter Server Administrator’s Guide DecemberWho Should Use This Book PrefaceHow This Book Is Organized The Sun MediaCenter Documentation Suitex Sun MediaCenter Server Administrator’s Guide December TABLE P-1 Typographic Conventions What Typographic Changes Meanxii Sun MediaCenter Server Administrator’s Guide December Shell Prompts in Command ExamplesTABLE P-2 Shell Prompts Shell1.1 Introduction Introduction1.2 Sun MediaCenter Hardware Sun MediaCenter Server Control Content From tape, network-accessible ﬁle, or live sourceFast Ethernet or ATM Fast/Wide or Ultra SCSI Media File System FilesFIGURE 1-2 Sun MediaCenter Software Architecture 1.3 Sun MediaCenter SoftwareRecovery from single-disk failures Guaranteed stream delivery rate1.3.1 Media File System MFS Independent streamsRandom access High-resolution rate controlHot swappability Efﬁcient use of disk bandwidthMedia File System Layout Manager Scheduler Bit Pump Buffers 1.3.2 Media Stream ManagerDisk Driver Output Driver1.4 Video Output Interfaces 1.3.3 Content Manager1.3.4 Web-based Tools MediaCenter Server Programmer’s Guide1.4.2 LAN 1.4.1 ATMFIGURE 1-4 Sun MediaCenter Servers in ATM Environment FIGURE 1-5 Sun MediaCenter Servers in LAN environment 1.5 Content Preparation and Loading1.7 Push Model 1.6 Server Management1-12 Sun MediaCenter Server Administrator’s Guide December 1.8 Design Beneﬁts2.1 General MPEG Encoding Requirements Preparing and Loading Content2.2 MPEG Encoding Requirements for Trick Play 2.3.1 Packet Boundary 2.3 Splice Points2.3.5 randomaccessindicator 2.3.3 payloadunitstartindicator2.3.2 closedgop 2.3.4 adaptationﬁeldcontrol2.4 Content Loading To copy to or extract from a tape device, use smctar 2.5 References 2-8 Sun MediaCenter Server Administrator’s Guide December 3.1 Overview Monitoring the Server3.2.1 Invoking the Tool 3.2 Using the WebAdmin ToolChapter 3 Monitoring the Server FIGURE 3-1 Sun MediaCenter PageOnce the applet loads, the Resource Utilization page is displayed 3-4 Sun MediaCenter Server Administrator’s Guide DecemberFIGURE 3-2 Resource Utilization Page 3.2.2 Common Page Elements 3.3 Resource UtilizationTroubleshooting 3.4 Streaming VideosVideos being copied Disk CapacityFIGURE 3-3 Streaming Videos Page the title being viewed 3-8 Sun MediaCenter Server Administrator’s Guide Decemberspeed Fast-Forward, Slow Motion, Stopped, Playing, Reverse FIGURE 3-4 Streaming Videos Page with Stream Detail3.5 Copy Sessions title of the content being transferred FIGURE 3-6 Session Information Page The Session Information page is shown belowChapter 3 Monitoring the Server 3.6 Disk Capacity FIGURE 3-7 Disk Capacity Page The Disk Info page is shown below The bottom portion of the page shows any late events or disk errors 3.7 TroubleshootingThe Troubleshooting page is shown below Chapter 3 Monitoring the ServerThe Troubleshooting page contains the following links This page shows the status of disks in the MFS 3.7.1 Disk HealthThe Disk Health page is shown below Chapter 3 Monitoring the Server3.7.2 Console Log Chapter 3 Monitoring the Server FIGURE 3-11 Console Log Page3-20 Sun MediaCenter Server Administrator’s Guide December 3.7.3 Scheduler and BitpumpThe Bitpump page is shown below TABLE 3-1 Scheduler and Bitpump Statistics TABLE 3-1 describes the ﬁelds in this pageTABLE 3-1 Scheduler and Bitpump Statistics Continued bitPumpStreams bitPumpCurrent number of bit pump streams bitPumpBandwidth3-24 Sun MediaCenter Server Administrator’s Guide December 4.1 Overview Moving Content4.2.1 Invoking the Tool 4.2 Using CmToolFIGURE 4-1 Sun MediaCenter Page Chapter 4 Moving Content4-4 Sun MediaCenter Server Administrator’s Guide December FIGURE 4-2 Table of Contents Page4.2.2 Common Page Elements 4.3 Loading ContentFIGURE 4-3 Server Login Page Upon successful login, the Load Content page is displayed4-6 Sun MediaCenter Server Administrator’s Guide December FIGURE 4-4 Load Content Page 4-8 Sun MediaCenter Server Administrator’s Guide December FIGURE 4-5 Content on Remote SystemFIGURE 4-6 Specifying a Local Title Chapter 4 Moving ContentFIGURE 4-7 Copy Conﬁrmation 4-10 Sun MediaCenter Server Administrator’s Guide DecemberFIGURE 4-8 Session Information FIGURE 4-9 Table of Contents Page 4.4 Table of Contents Page4-12 Sun MediaCenter Server Administrator’s Guide December FIGURE 4-10 Display Attributes Dialog Box 4.4.1 View MenuFIGURE 4-11 Sort Dialog Box 4-14 Sun MediaCenter Server Administrator’s Guide DecemberFIGURE 4-12 Filter Dialog Box FIGURE 4-13 Title Information Page 4.4.2 Selected Menu4-16 Sun MediaCenter Server Administrator’s Guide December Sun MediaCenter Server Utilities 5.1 Setting a Title Access Control ListTo extend access for a title that you own, use the smcsettacl command where username is a Solaris login name title 5.2 The smccopy Utilityhostnametitle hostnameﬁlename ﬁlenamer rate s speedThe following are examples of smccopy use t typeThe following command copies a ﬁle between two local ﬁlesystems 5.3.1 Syntax and Options 5.3 The smctar Utilityb blknum 5.3.2 Content Loading FIGURE 5-1 Loading Content with smctar 5.3.3 Copying ContentTitle Sun MediaCenter MFStar Device or File Optional Sun MediaCenter Title MFS5.3.5 Examples 5.3.4 Remote Copying and Extractionremotehost# tar cf - your title.TOC your content.mpg smctar xf \ server# tar cf - your title.TOC your content.mpg smctar xfserver# smctar xf /dev/rmt/0 smcserverbambi remotehost# smctar cf /dev/rmt/0 smcserverbambiAn alternative to the preceding commands is #!/bin/sh # smcbackup Script to archive multiple SMC titles to tape 5-16 Sun MediaCenter Server Administrator’s Guide December 5.4 The smcls Utility Display the format of this title Display the time the title was last modiﬁed client% smcls -lt 5-20 Sun MediaCenter Server Administrator’s Guide Decembersmcls my-server”a-z*” smcls -lrtB 5.5 The smcrm Utilityserver% smcrm SUNWbambi SGIquovadis 5-22 Sun MediaCenter Server Administrator’s Guide December Sun MediaCenter Server FTP Daemon FIGURE 6-1 Sun MediaCenter FTP Functions 6-2 Sun MediaCenter Server Administrator’s Guide DecemberStandard Daemon6.1 Keyword for Video-File Functions 6.2 Video-File Attributes delete dir get ls mget mls mput put rename 6.3 Video-File Commandsftp dir smctitle=\ 6-6 Sun MediaCenter Server Administrator’s Guide Decemberftp dir smctitle=Bat\ list continues to conclusion 6.3.1 Listing Fileslist continues to conclusion 6-8 Sun MediaCenter Server Administrator’s Guide December 6.3.2 Moving Files Directions of put/ get Commands 6.3.2.1 Moving Single TitlesPage 6.3.2.2 Moving Multiple Titles 6.3.3 Renaming Files 6.3.4 Deleting Files 6.4 Loading Content with ftpencodingmachine% ftp smcserverone Connected to smcserverone 331 Password required for clinton. Password230 User clinton logged in. ftp lcd /home/encode ftp bin 200 Type set to6-16 Sun MediaCenter Server Administrator’s Guide December 7.1 Introduction Server Output Data Format7.2 ATM Encapsulation Content7.2.1 MPEG-2 Transport Stream Packet Encapsulation Sun MediaCenter Server7.2.3 MPEG-1 System Stream Packet Encapsulation 7.2.2 MPEG-2 Program Stream Packet Encapsulation7.2.4 Thomson Electronics Packet Encapsulation 7.2.5 MPEG-2 Encapsulation over Classical IP over AAL57.3.1 MPEG over AAL5 7.3 ATM Addressing7.3.2 MPEG-2 over Classical IP over AAL5 host=IP hostname,udpport=UDPport num 7.4 Fast Ethernet EncapsulationFIGURE 7-2 LAN/Enterprise Scenario 7.4.1 MPEG-2 Transport Stream Packet Encapsulation7.4.2 MPEG-2 Program Stream Packet Encapsulation 7.5 Fast Ethernet Addressing7.4.3 MPEG-1 System Stream Packet Encapsulation 7.4.4 Thomson Electronics EncapsulationTABLE 7-1 Value of encap Field in MsmConnect 7.6 Specifying Encapsulation7.8 References 7.7 Differences Among Different Types of Links7-10 Sun MediaCenter Server Administrator’s Guide December 8.1 Monitoring MFS Disks Administering MFS Disks8.2.1 mfs df 8.2 MFS Utilitiesmfs df usage is as follows 8.2.2 mfs diskusg 8.2.3 mfs repair mfs repair usage is as follows d deviceTo ﬁnd out which MFS disk has failed, you enter 8.2.4 mkmfs Drive name /dev/rdsk/c1t1d0s2 Drive name /dev/rdsk/c1t2d0s2 8-10 Sun MediaCenter Server Administrator’s Guide December 8.3 Replacing a Failed Diskserver# mfs repair -p -d /dev/rdsk/c1t4d0s2 server# mfs repair -r -d /dev/rdsk/c1t4d0s2server# mfs repair -rp -d /dev/rdsk/c1t4d0s2 Note -Two overlapping disk failures result in a system panic 9.1 ACL Files Access Control Lists9.3 Server ACL 9.2 Permissionsuserpermission nobodypermission9.4 Player ACL 9.6 Session ACL 9.5 Title ACLA session ACL has a single type of permission 9-6 Sun MediaCenter Server Administrator’s Guide December 10.1 Symptoms and Possible Solutions/ Workarounds TroubleshootingServer watchdog resets on start of video stream playback No video displays on client Underperforming stream output10-2 Sun MediaCenter Server Administrator’s Guide December Corrupt disk labels Poor video qualityKernel panic with SAHI queue threshold messages Disk failure10.2.1 Server Console Messages 10.2 Error MessagesUnable to create title on the MFS WARNING stream id 107 ba@426,3,80@ xmit error Q size 10.2.2 MFS Error MessagesNOTICE ba0 qsize OK NOTICE ba3 qsize 9 above hiwat10-6 Sun MediaCenter Server Administrator’s Guide December Setting up the SNMP Agent TABLE A-1 Sun MediaCenter Server MIB Deﬁnitions A.1 The Sun MediaCenter Server MIBdiskError Appendix A Setting up the SNMP Agent A-3diskErrorTable bitPumpdiskTable A-4 Sun MediaCenter Server Administrator’s Guide Decemberfailure onlinesysZonesPerDisk Appendix A Setting up the SNMP Agent A-5sysTimePeriodLength sysNumberOfBuffers1. Become root A.2 Enabling Management by Solstice Domain ManagerThis command creates smsvod.mib.schema and smsvod.mib.oid 5. Run $SNMHOME/bin/mib2schema smsvod.mib4. Copy smsvod.mib to $SNMHOME/agents Under “instance elementCommand”6. Run buildoid with no arguments A.3 Enabling Trap Handling The Sun MediaCenter software ensures delivery of media streams at the same rate at which they were recorded. The bit pump’s missing of a deadline indicates that the machine was, at least momentarily, unable to keep up with the rate of a title. This indicates a resource conﬂict on the server Creating a Content Package B.1 Content Package B.2 The TOC File A TOC ﬁle is described with the following structures B.2.1.1 title B.2.1 ContentObjectsB.2.1.2 version B.2.1.3 formatB.2.1.4 description B.2.2 BitStreamObjectsB.2.2.1 description B.2.2.2 speedB.2.2.3 bitrate B.2.3 DataFileObjectsB.2.2.4 indexﬁle B.2.2.5 indexsizeB.2.3.2 ﬁlepath B.3 Simplest Case TOC FileB.2.3.3 ﬁlesize title B.4 TOC File for Large Filesversion formatB.5 Index File Requirements B.5.1 Normal Play Time B.5.2 File Offset B.6 Tape Storage FormatB.6.1 Tar Format FIGURE B-2 Tape Storage Format Appendix B Creating a Content Package B-13B.6.2 Tapes B.7 ExampleAppendix B Creating a Content Package B-15 CODE EXAMPLE B-1 Example Content PackageB-16 Sun MediaCenter Server Administrator’s Guide December For a ﬁle bambi.1x index ﬁle for normal-speed play B.8 References Appendix B Creating a Content Package B-19 B-20 Sun MediaCenter Server Administrator’s Guide December Glossary-1 GlossaryMedia Stream Manager Glossary-3 Table of ContentsGlossary-4 Sun MediaCenter Server Administrator’s Guide December Index Page Page Page Page Index-6 Sun MediaCenter Server Administrator’s Guide December