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

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Once the interaction between virtual SCSI server and client adapters is enabled, mapping storage resources from the VIOS to the client partition is needed. The client partition configures and uses the storage resources when it starts up or when it is reconfigured at runtime. The processes runs as follows: ► The HMC enables interaction between virtual SCSI adapters. ► The mapping of storage resources is performed in the VIOS. ► The client partition uses the storage after it has been booted or a cfgmgr command is run. For more information about the technical details of virtual SCSI implementation, refer to 2.9, “Virtual SCSI introduction” on page 89. Figure 3-43 shows the flow needed to enable virtual SCSI resources to AIX 5L or Linux clients. Note that Virtual I/O Server and client partitions do not need to restart when new virtual SCSI server and client adapters are created using the dynamic LPAR menus in the HMC and dynamic LPAR operations are enabled in the operating systems. First time setup (new Virtual SCSI server and client adapters) VIOS LPAR Client LV VIOS LPAR Client LV VIOS LPAR Client LPAR Client 1. Make Virtual SCSI server and client definitions in partition profiles (use DLPAR for running partitions) 2. Map storage resources to Virtual SCSI server adapter (for example vhost0) 4. Reconfigure operating system in client partitions or install client partitions (if not installed and running) Figure 3-43 Basic configuration flow of virtual SCSI resources To enable the AIX 5L or Linux client partitions to interact with virtual SCSI resources, the following steps are necessary: 1. Plan which virtual slot will be used in the Virtual I/O Server for the virtual SCSI server adapter and which slot in the AIX 5L or Linux client partition for the virtual SCSI client adapter (each partition has its own pool of virtual slots). In the VIOS, consider ranges of slot numbers for virtual adapters that serve a specific partition (for example, slots 20 through 29 for virtual SCSI server adapters for an AIX 5L client partition). 176 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
2. Define the virtual SCSI server adapter on the Virtual I/O Server. 3. Define the SCSI client adapter on the AIX 5L or Linux client partition. 4. Map the desired SCSI resources using the mkvdev command, as described in 3.4.4, “Defining virtual disks” on page 163. Once both the Virtual I/O Server and AIX 5L or Linux client partitions are interacting with each other, virtual devices can be mapped online on the Virtual I/O Server and the AIX 5L or Linux client partitions can be reconfigured online to use them, as shown in the Figure 3-44. Configuration of storage resources (existing Virtual SCSI adapters) VIOS LPAR Client LPAR Client LV VIOS LPAR Client LPAR Client LV VIOS LPAR Client LPAR Client 1. Map storage resources to Virtual SCSI server adapter (for example vhost0) 2. Reconfigure operating system Figure 3-44 Basic configuration flow of virtual SCSI resources Chapter 3. Setting up the Virtual I/O Server: the basics 177
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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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Page 164 and 165: 5. Add a virtual SCSI adapter to vi
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Page 172 and 173: You are now ready to use the newly
Page 174 and 175: 3. Specify the Maximum virtual adap
Page 176 and 177: You can use the lsmap -all -net com
Page 178 and 179: 2. Select the check box AIX or Linu
Page 180 and 181: 2. Click Create client adapter. The
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Page 184 and 185: 6. When the operation is complete,
Page 186 and 187: 9. When you have completed adding v
Page 188 and 189: Server SCSI adapters have been adde
Page 190 and 191: Using logical partitions In our bas
Page 192 and 193: Note: Based on the lsdev -vpd comma
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Page 196 and 197: Assuming that a NIM master is confi
Page 198 and 199: 3. Set up the NIM master IP address
Page 200 and 201: 3.4.6 Mirroring the Virtual I/O Ser
Page 204 and 205: Figure 3-45 shows the steps to crea
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Page 208 and 209: 4.1 Providing higher serviceability
Page 210 and 211: Figure 4-1 MPIO and LV Mirroring wi
Page 212 and 213: Some advanced topics with respect t
Page 214 and 215: While EC is an Cisco-specific imple
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Page 218 and 219: Figure 4-6 IP multipathing in the c
Page 220 and 221: SEA Failover works as follows: Two
Page 222 and 223: Although the alternative configurat
Page 224 and 225: ► 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 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
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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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