Advanced POWER Virtualization on IBM System p5 - Previous ...

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1.1.5 Virtual LAN 1.1.6 Virtual I/O A function of the <strong>POWER</strong> Hypervisor, Virtual LAN allows secure communication between logical partitions without the need for a physical I/O adapter. The ability to securely share Ethernet bandwidth across multiple partitions increases hardware utilization. Virtual I/O provides the capability for a single physical I/O adapter and disk to be used by multiple logical partitions of the same server, allowing consolidation of I/O resources and minimizing the number of I/O adapters required. 1.1.7 Capacity Upgrade on Demand There are multiple Capacity Upgrade on Demand (CUoD) possibilities offered, including: ► Permanent Capacity Upgrade on Demand Enables permanent system upgrades by activating processors or memory. ► On/Off Capacity Upgrade on Demand Usage based billing that allows for activation and deactivation of both processors and memory as required. ► Reserve Capacity Upgrade on Demand Prepaid agreement that adds reserve processor capacity to the shared processor pool, which is used if the base shared pool capacity is exceeded. ► Trial Capacity Upgrade on Demand Partial or total activation of installed processors or memory for a fixed period of time. 1.1.8 Multiple operating system support The <strong>POWER</strong>5 processor based System p5 products support IBM AIX 5L Version 5.2 ML2, IBM AIX 5L Version 5.3, i5/OS, and Linux distributions from SUSE and Red Hat. 1.1.9 Integrated <strong>Virtualization</strong> Manager The Integrated <strong>Virtualization</strong> Manager (IVM) is a hardware management solution that inherits the most basic of Hardware Management Console (HMC) features and removes the requirement of an external HMC. It is limited to managing a single System p5 server. IVM runs on the Virtual I/O Server Version 1.3. 4 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
1.2 RAS of virtualized systems As individual System p5 systems become capable of hosting more system images, the importance of isolating and handling outages that might occur becomes greater. Hardware and operating system functions have been integrated into the system design to monitor system operation, predict where outages may occur, isolate outage conditions that do occur, then handle the outage condition, and when possible, continue operation. IBM reliability, availability, and serviceability (RAS) engineers are constantly improving server design to help ensure that System p5 servers support high levels of concurrent error detection, fault isolation, recovery, and availability. 1.2.1 Reliability, availability, and serviceability The goal of the RAS is to minimize outages. This section highlights specific RAS capabilities introduced or enhanced in the System p5 products. Reducing and avoiding outages The base reliability of a computing system is, at its most fundamental level, dependent upon the intrinsic failure rates of the components that comprise it. Highly reliable servers are built with highly reliable components. The System p5 servers allow for redundancies of several system components and mechanisms that diagnose and handle special situations, errors, or failures at the component level. System surveillance Fault detection and isolation are key elements of high availability and serviceable server design. In the System p5 systems, three elements, the <strong>POWER</strong> Hypervisor, service processor, and Hardware Management Console (HMC), cooperate in detecting, reporting, and managing hardware faults. Service processor The service processor enables <strong>POWER</strong> Hypervisor and Hardware Management Console surveillance, selected remote power control, environmental monitoring, reset and boot features, and remote maintenance and diagnostic activities, including console mirroring. On systems without an HMC, the service processor can place calls to report surveillance failures with the <strong>POWER</strong> Hypervisor, critical environmental faults, and critical processing faults. Chapter 1. Introduction 5
Page 1: Front cover Advanced</stron
Page 4 and 5: Note: Before using this information
Page 6 and 7: 2.1 New features in Version 1.3 of
Page 8 and 9: 4.4.2 Configuration on the Virtual
Page 10 and 11: 6.6.4 Managing memory resources . .
Page 12 and 13: 3-9 Processing sharing mode and the
Page 14 and 15: 5-14 Status window . . . . . . . .
Page 16 and 17: xiv Advanced <stro
Page 18 and 19: xvi Advanced <stro
Page 20 and 21: any form without payment to IBM, fo
Page 22 and 23: The team that wrote this redbook Th
Page 24 and 25: xxii Advanced <str
Page 26 and 27: - Additional information about the
Page 28 and 29: management” on page 257 discusses
Page 32 and 33: The service processor provides the
Page 34 and 35: Adapter sparing Adapter sparing can
Page 36 and 37: 1.4.1 IBM AIX 5L for System p5 syst
Page 38 and 39: Note: i5/OS partitions are only sup
Page 40 and 41: Function / capability IBM System z9
Page 42 and 43: 1.6 The value of the Advanc
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Page 46 and 47: 2.1 New features in Version 1.3 of
Page 48 and 49: ► throughput and performance. For
Page 50 and 51: ► IVM enhancements Industry leadi
Page 52 and 53: Shared Ethernet Adapter failover ca
Page 54 and 55: the partition. This allows you to c
Page 56 and 57: Figure 2-2 ASMI menu to enable the
Page 58 and 59: management interface for systems wi
Page 60 and 61: When setting up a partition, you ha
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Page 64 and 65: processors and the other a single o
Page 66 and 67: Figure 2-5 shows the usage of the s
Page 68 and 69: 2.4.5 Dynamic partitioning Partitio
Page 70 and 71: Number of virtual processors In gen
Page 72 and 73: The benefit of SMT is greatest wher
Page 74 and 75: Setting SMT mode using SMIT Use the
Page 76 and 77: The Hypervisor firmware and the hos
Page 78 and 79: Partition 2 is configured with one
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Note: The Virtual I/O Server suppor
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Most ISVs consider partitions with
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When a partition is running as unca
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► ► ► Selected IBM software p
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Shared pool = 4 CPU Sum EC = 3.0 PU
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For more information about the use
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Table 2-5 Licensing estimation for
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Maximum virtual processors used Cap
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2.8 Virtual and Shared Ethernet int
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► VLAN 2 - Node A-2 - Node B-3 -
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VLAN support in AIX 5L is based on
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2. Tagged port receives a packet ta
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page 78. EtherChannel and Link Aggr
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Note: In this type of configuration
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Figure 2-18 Shared Ethernet Adapter
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Other aspects that have to be taken
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► Only packets for the VLAN speci
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► Packets tagged with a VLAN othe
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► The value proposition enabling
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Figure 2-21 Virtual SCSI architectu
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Figure 2-23 and Figure 2-24 show th
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4. In the Virtual I/O Server, vios1
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The following are the steps to unco
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► ► A logical volume on the Vir
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I/O configuration, performance is a
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Hardware management is done by an H
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VMC allows IVM to provide basic log
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Virtual TTY In order to allow LPAR
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2.13.1 Linux device drivers for IBM
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Mirroring Linux can mirror disks by
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Figure 2-29 Bridging a virtual and
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116 Advanced <stro
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3.1 Getting started This section pr
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lspath mkpath mkvdev mkvt rmdev rmp
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3.1.2 Hardware resources managed Th
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3.2 Creating a Virtual I/O Server p
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3. Enter the partition name and ID
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5. You have the option to change th
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7. Select the Shared check box for
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9. Specify the processing sharing m
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11.Skip setting the I/O pools, as s
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2. Click the Create adapter button
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5. Add a virtual SCSI adapter to vi
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7. Select Normal for your boot mode
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A few seconds after the status wind
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3. Select the VIO_Server1 profile a
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You are now ready to use the newly
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3. Specify the Maximum virtual adap
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You can use the lsmap -all -net com
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2. Select the check box AIX or Linu
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2. Click Create client adapter. The
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4. Click Create server adapter and
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6. When the operation is complete,
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9. When you have completed adding v
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Server SCSI adapters have been adde
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Using logical partitions In our bas
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Note: Based on the lsdev -vpd comma
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It is useful to be able to map the
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Assuming that a NIM master is confi
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3. Set up the NIM master IP address
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3.4.6 Mirroring the Virtual I/O Ser
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Once the interaction between virtua
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Figure 3-45 shows the steps to crea
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Ethernet server adapter and a physi
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4.1 Providing higher serviceability
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Figure 4-1 MPIO and LV Mirroring wi
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Some advanced topics with respect t
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While EC is an Cisco-specific imple
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Alternatives for network high avail
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Figure 4-6 IP multipathing in the c
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SEA Failover works as follows: Two
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Although the alternative configurat
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► With NIB, the two internal netw
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In Figure 4-11 on page 201, a clien
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When Virtual I/O Server 2 returns t
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few cycles to set up, but none for
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4.1.7 Considerations The following
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. On step 10, allocate an unused Et
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7. Check the devices list on your V
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Figure 4-17 shows the intended solu
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. Click the Create Adapter button,
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Tip: Mismatching SEA and SEA Failov
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Checking which SEA is active Checki
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In this scenario, we attach each Vi
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2. Configure the SEA, as described
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5. Check for the vhost adapter usin
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8. Check again, using the lsdev com
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Check the mappings, as shown in Exa
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2. Check the MPIO configuration by
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To determine which path will use th
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7. On the first LPAR, create an enh
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A switch can be forced with the /us
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The configurations described in thi
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We recommend using mirroring, strip
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Supported multi-path configurations
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Supported scenarios using one Virtu
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Supported scenarios using multiple
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4.7.2 Supported Ethernet configurat
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In order to help clients improve th
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Clients can find the fixes and file
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Figure 4-35 shows the basic conside
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256 Advanced <stro
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5.1 Dynamic LPAR operations This se
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5. Figure 5-3 shows you the Virtual
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another partition. Use the lsslot -
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2. Select the adapter to be moved a
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5.1.3 Add memory dynamically in AIX
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5.1.4 Removing memory dynamically T
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The following command shows the eff
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2. Figure 5-17 shows the current pr
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et1 Defined 01-09 IEEE 802.3 Ethern
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1. Use the diagmenu command to unco
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5. Locate the blinking adapter, rep
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► Figure 5-19 shows you the topol
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Example 5-4 shows how to back up th
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Example 5-6 Creating a Virtual I/O
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5.2.5 Restoring the Virtual I/O Ser
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For an AIX 5L NIM server recovery,
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To view the System Plan, Select Sys
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In Example 5-11, we look to the map
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The last information we need is the
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In a mirrored environment, issue th
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Figure 5-23 shows that the virtual
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csm.diagnostics 1.5.0.0 # Cluster S
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os.txt.spell 5.3.0.10 # Writer's To
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hd3 jfs2 1 2 2 open/syncd /tmp hd1
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Adding a PCI hot plug adapter The t
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The following is a list of empty SC
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After the disk is replaced and brou
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2. Get a larger disk from the Virtu
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The updateios command does not comm
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Note: You can use dsh based on rsh,
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2 Checking if Redundancy with dual
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STATUS=`lspath -l $n | grep Failed
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Traditional performance measurement
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CPU statistics in shared-processors
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This is shown in Example 5-22 and E
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5.5.4 The topas command The topas c
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capped, and uncapped. The Mem and t
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Tip: The output of topas -cecdisp w
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These files can now be processed wi
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interval and count parameters. The
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The lparstat command POWER<
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Note: The variable capacity weight
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Column Measured parameter Comments
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The sysstat command The sysstat com
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write: wps avgserv minserv maxserv
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5.5.7 Monitoring with PLM The Parti
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Use the perfwb command to start the
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Using the r and p switches after st
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The nmon process runs in the backgr
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The POWER Hypervis
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5.7 Security considerations for Vir
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The firewall can be switched on and
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Enable mail client (dismaildmndls):
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Network option extendednetstats (ex
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Enable unsecure daemons (disrmtdmns
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Minimum number of chars (mindiffhls
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370 Advanced <stro
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6.1 Partition Load Manager introduc
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Notes: ► The PLM server may resid
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When PLM is notified that a partiti
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6.1.4 Memory management PLM manages
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However, the managed nodes know not
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sh and rcp During its installation,
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2. Create a toc file with the inuto
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. Append the PLM server public key
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You can set up the RMC using a scri
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Define a PLM policy as follows: 1.
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Table 6-2 CPU-related tunables CPU
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Memory tunables Table 6-4 shows the
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1. Start the Web-based System Manag
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4. Complete the information in the
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. Fill out the values for the tunab
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8. Specify the CPU resource policy
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Clicking the OK button will create
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. From the Web-based System Manager
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2. Click the Groups tab, and then t
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Figure 6-21 Edit Policy File partit
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The policy_file and log_file parame
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In its short form, the xlplm -Q com
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6.3 Point-in-time and recurring rec
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Select the type of operation you wi
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6.4 Tips and troubleshooting PLM Th
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Note: Exchanging keys is an importa
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The Identity entry is either based
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120200c10d3ad7a20951523b7c01bd31f42
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► ► PLM does not directly state
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6.6 Resource management Owners of I
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Characteristics of WLM, PLM, and sh
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Evaluating CPU utilization Traditio
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Shared-processor partitions support
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438 Advanced <stro
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FDX FLOP FRU FTP GDPS GID GPFS GUI
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442 Advanced <stro
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Other publications These publicatio
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► ► ► ► Virtual I/O Server
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cfgdev command 163, 203, 264 cfgmgr
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excess weight, PLM 376 extendlv com
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Micro-Partitioning 3, 32-33 49 capp
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processor dispatch 43, 50 processor
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VIO 59 virtual processor 61 mainten
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target 90, 92 virtual SCSI Server a
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Back cover Advanced</strong
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