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256 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
5 Chapter 5. System management This chapter provides a discussion of the following topics: ► Dynamic LPAR operations ► Backup and restore of the Virtual I/O Server ► Rebuilding the Virtual I/O Server, if no restore is possible ► System maintenance for the Virtual I/O Server ► Monitoring a virtualized environment ► Sizing considerations for Virtual I/O Servers ► Security considerations for Virtual I/O Servers © Copyright IBM Corp. 2004, 2005, 2007. All rights reserved. 257
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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
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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
Page 232 and 233: 4.1.7 Considerations The following
Page 234 and 235: . On step 10, allocate an unused Et
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,
Page 242 and 243: Tip: Mismatching SEA and SEA Failov
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
Page 274 and 275: 4.7.2 Supported Ethernet configurat
Page 276 and 277: In order to help clients improve th
Page 278 and 279: Clients can find the fixes and file
Page 280 and 281: Figure 4-35 shows the basic conside
Page 284 and 285: 5.1 Dynamic LPAR operations This se
Page 286 and 287: 5. Figure 5-3 shows you the Virtual
Page 288 and 289: another partition. Use the lsslot -
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
Page 296 and 297: The following command shows the eff
Page 298 and 299: 2. Figure 5-17 shows the current pr
Page 300 and 301: et1 Defined 01-09 IEEE 802.3 Ethern
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
Page 324 and 325: Figure 5-23 shows that the virtual
Page 326 and 327: csm.diagnostics 1.5.0.0 # Cluster S
Page 328 and 329: os.txt.spell 5.3.0.10 # Writer's To
Page 330 and 331: 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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