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

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7. On the first LPAR, create an enhanced concurrent capable volume group: # mkvg -C -y myvg hdiskN The system will inform you that the volume group is not varied on automatically and that it has to be done manually. Although it is possible to create an enhanced concurrent capable volume group without cluster manager software installed, it is not recommend. All accesses to the enhanced concurrent enabled volume group are not coordinated between both servers, which can lead to data corruption on this volume group. 8. On the second Virtual I/O Server, scan for the disk: $ cfgdev 9. On the second Virtual I/O Server, change the SCSI reservation of that disk: $ chdev -dev hdiskN -attr reserve_policy=no_reserve 10.On the second Virtual I/O Server, assign the disk to the second LPAR $ mkvdev -vdev hdiskN -vadapter vhostN [ -dev XXX ] 11.On the second LPAR, import the volume group from the disk in learning mode: importvg -L -y myvg hdiskN where N is the number of the disk in question. 4.5 Scenario 4: Network Interface Backup in the client Network Interface Backup, NIB can be used in a redundant network configuration when two Virtual I/O Servers are used. See Figure 4-10 on page 197. NIB is configured in the client by using two virtual Ethernet adapters. These adapters must have different PVIDs corresponding to each of the Virtual I/O Servers. In our configuration, we use PVID=1 for VIO_Server1 and PVID=2 for VIO_Server2. We use the DB_server as an example where the Ethernet adapter ent0 has PVID=1 and Ethernet adapter ent1 has PVID=2. These are the steps to configure Network Interface Backup for the client: 1. Enter smit → Devices → Communication → EtherChannel / IEEE 802.3ad Link Aggregation → Add An EtherChannel / Link Aggregation. Select the primary adapter, ent0, and press Enter. Example 4-26 on page 235 shows the SMIT menu for adding an EtherChannel / Link Aggregation. 234 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
Example 4-26 Add An EtherChannel / Link Aggregation smit menu Add An EtherChannel / Link Aggregation Type or select values in entry fields. Press Enter AFTER making all desired changes. [Entry Fields] EtherChannel / Link Aggregation Adapters ent0 + Enable Alternate Address no + Alternate Address [] + Enable Gigabit Ethernet Jumbo Frames no + Mode standard + Hash Mode default + Backup Adapter ent1 + Automatically Recover to Main Channel yes + Perform Lossless Failover After Ping Failure yes + Internet Address to Ping [9.3.5.41] Number of Retries [] +# Retry Timeout (sec) [] +# F1=Help F2=Refresh F3=Cancel F4=List Esc+5=Reset F6=Command F7=Edit F8=Image F9=Shell F10=Exit Enter=Do We use ent1 as the backup adapter and the gateway 9.3.5.41 for the Internet address to ping. 2. Press Enter to complete. This gives ent2 as the aggregated adapter. 3. Define the IP interface on en2 and the setup is complete. If the primary adapter cannot reach the gateway address, going through VIO_Server1 in our case, communication is switched to the backup adapter, which goes through VIO_Server2. To check which channel is active, you can use the entstat command. See Example 4-27. Note: You will also receive an error message in the errorlog when a switch has taken place. Example 4-27 CheckSwitching channels in a NIB configurationing which channel is active # entstat -d ent2 | grep Active Active channel: primary channel Chapter 4. Setting up virtual I/O: advanced 235
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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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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 238 and 239: Figure 4-17 shows the intended solu
Page 240 and 241: . Click the Create Adapter button,
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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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