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

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In order to help clients improve the availability for their virtualized servers, IBM tested and certified HACMP with the <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> features of virtual SCSI and virtual Ethernet. Clients can design highly available clusters of dedicated-processor partitions or micro-partitions that use services from Virtual I/O Servers for their critical applications. Information about the announcement of support for HACMP for the <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> feature can be found at: http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10390 The tasks related to maintaining active cluster storage resources in each of the Virtual I/O Servers that serve AIX 5L client partitions (cluster nodes) are handled by the combination of certified software levels and the configuration of disk drives and volume groups. The most important considerations include: ► ► ► ► ► The external storage content (volume groups and logical volumes) is handled at the AIX 5L client partition level. Virtual I/O Servers only connect external storage with HACMP/AIX 5L nodes (client partitions). No disk reservations apply at the hardware level. Storage access, depending on the configuration, is a combination of HACMP/AIX 5L LVM. All the volume groups must be Enhanced Concurrent volume groups regardless of whether they are used in concurrent access mode or not. If any HACMP/AIX 5L nodes access the volume groups through a Virtual I/O Server, then all nodes must access through the Virtual I/O Server. All the HACMP/AIX 5L nodes must use the volume groups with the same basis, concurrent or not concurrent. Figure 4-33 on page 251 shows the basic issues for storage of AIX 5L client partitions and HACMP. 250 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
HACMP cluster AIX Client A VIOS A Failover AIX Client B VIOS B Basic cluster issues: • Storage resources must be active in each VIOS to allow AIX client partitions to vary on VGs • Storage resources are still active in VIOS when served AIX partions get out of service Figure 4-33 Basic issues for storage of AIX 5L client partitions and HACMP This section outlines the supported configurations for using HACMP with the virtual Ethernet and virtual SCSI features. Such configurations should be accomplished with the minimum levels of software and specific virtual Ethernet and virtual SCSI attached disk configurations. Software requirements The levels of software needed in both Virtual I/O Server and AIX 5L client partitions are shown in Table 4-7. Table 4-7 Minimum levels of software to configure HACMP with APV Software Version Maintenance APARs/Fixes level AIX 5L V5.3 5.3 5300-02 IY70082, IY72974 rsct.basic.hacmp fileset 2.4.2.1 rsct.basic.rte fileset 2.4.2.2 rsct.compat.basic.hacmp 2.4.2.0 fileset HACMP 5.1 IY66556 HACMP 5.2 IY68370, IY68387 HACMP 5.3 Virtual I/O Server 1.1 Fix Pack 6.2 IY71303 Virtual I/O Server 1.2 Virtual I/O Server 1.3 Chapter 4. Setting up virtual I/O: advanced 251
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Front cover Advanced</stron
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Note: Before using this information
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2.1 New features in Version 1.3 of
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4.4.2 Configuration on the Virtual
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6.6.4 Managing memory resources . .
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3-9 Processing sharing mode and the
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5-14 Status window . . . . . . . .
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xiv Advanced <stro
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xvi Advanced <stro
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any form without payment to IBM, fo
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The team that wrote this redbook Th
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xxii Advanced <str
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- Additional information about the
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management” on page 257 discusses
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1.1.5 Virtual LAN 1.1.6 Virtual I/O
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The service processor provides the
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Adapter sparing Adapter sparing can
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1.4.1 IBM AIX 5L for System p5 syst
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Note: i5/OS partitions are only sup
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Function / capability IBM System z9
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1.6 The value of the Advanc
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18 Advanced <stron
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2.1 New features in Version 1.3 of
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► throughput and performance. For
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► IVM enhancements Industry leadi
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Shared Ethernet Adapter failover ca
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the partition. This allows you to c
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Figure 2-2 ASMI menu to enable the
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management interface for systems wi
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When setting up a partition, you ha
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partition with 0.50 processing unit
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processors and the other a single o
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Figure 2-5 shows the usage of the s
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2.4.5 Dynamic partitioning Partitio
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Number of virtual processors In gen
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The benefit of SMT is greatest wher
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Setting SMT mode using SMIT Use the
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The Hypervisor firmware and the hos
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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
Page 226 and 227: In Figure 4-11 on page 201, a clien
Page 228 and 229: When Virtual I/O Server 2 returns t
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Page 232 and 233: 4.1.7 Considerations The following
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Page 236 and 237: 7. Check the devices list on your V
Page 238 and 239: Figure 4-17 shows the intended solu
Page 240 and 241: . Click the Create Adapter button,
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Page 244 and 245: Checking which SEA is active Checki
Page 246 and 247: In this scenario, we attach each Vi
Page 248 and 249: 2. Configure the SEA, as described
Page 250 and 251: 5. Check for the vhost adapter usin
Page 252 and 253: 8. Check again, using the lsdev com
Page 254 and 255: Check the mappings, as shown in Exa
Page 256 and 257: 2. Check the MPIO configuration by
Page 258 and 259: To determine which path will use th
Page 260 and 261: 7. On the first LPAR, create an enh
Page 262 and 263: A switch can be forced with the /us
Page 264 and 265: The configurations described in thi
Page 266 and 267: We recommend using mirroring, strip
Page 268 and 269: Supported multi-path configurations
Page 270 and 271: Supported scenarios using one Virtu
Page 272 and 273: Supported scenarios using multiple
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Page 278 and 279: Clients can find the fixes and file
Page 280 and 281: Figure 4-35 shows the basic conside
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Page 284 and 285: 5.1 Dynamic LPAR operations This se
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Page 290 and 291: 2. Select the adapter to be moved a
Page 292 and 293: 5.1.3 Add memory dynamically in AIX
Page 294 and 295: 5.1.4 Removing memory dynamically T
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Page 298 and 299: 2. Figure 5-17 shows the current pr
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Page 302 and 303: 1. Use the diagmenu command to unco
Page 304 and 305: 5. Locate the blinking adapter, rep
Page 306 and 307: ► Figure 5-19 shows you the topol
Page 308 and 309: Example 5-4 shows how to back up th
Page 310 and 311: Example 5-6 Creating a Virtual I/O
Page 312 and 313: 5.2.5 Restoring the Virtual I/O Ser
Page 314 and 315: For an AIX 5L NIM server recovery,
Page 316 and 317: To view the System Plan, Select Sys
Page 318 and 319: In Example 5-11, we look to the map
Page 320 and 321: The last information we need is the
Page 322 and 323: In a mirrored environment, issue th
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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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