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

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In Example 5-11, we look to the mapping between the logical and physical volumes and the virtual SCSI server adapters. Example 5-11 lsmap -all $ lsmap -all SVSA Physloc Client Partition ID --------------- -------------------------------------------- ------------------ vhost0 U9111.520.10DDEDC-V4-C30 0x00000000 VTD LUN Backing device Physloc vtscsi2 0x8100000000000000 data1lv SVSA Physloc Client Partition ID --------------- -------------------------------------------- ------------------ vhost2 U9111.520.10DDEDC-V4-C10 0x00000006 VTD LUN Backing device Physloc VTD LUN Backing device Physloc vtscsi0 0x8100000000000000 rootvg_ztest0 vtscsi1 0x8200000000000000 hdisk1 U787A.001.DNZ00XY-P1-T10-L4-L0 Virtual SCSI server adapter vhost0 (defined on slot 30 in HMC) is mapped to Logical Volume datalv by Virtual Target Device vtscsi2. Virtual SCSI server adapter vhost2 has two Virtual Target Devices, vtscsi0 and vtscsi1. They are mapping Logical Volume rootvg_ztest0 and Physical Volume hdisk1 to vhost2 (is defined on slot 10 in HMC). The following commands are used to create our needed Virtual Target Devices: mkvdev -vdev datalv -vadapter vhost0 mkvdev -vdev rootvg_ztest0 -vadapter vhost2 mkvdev -vdev hdisk1 -vadapter vhost2 Note: The names of the Virtual Target Devices are generated automatically, except when you define a name using the -dev flag of the mkvdev command. 292 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
5.3.2 Rebuild network configuration After successfully rebuilding the SCSI configuration, we now are going to rebuild the network configuration. The netstat -state command shows us that en2 is the only active network adapter: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll en2 1500 link#2 0.d.60.a.58.a4 2477 0 777 0 0 en2 1500 9.3.5 9.3.5.147 2477 0 777 0 0 lo0 16896 link#1 153 0 158 0 0 lo0 16896 127 127.0.0.1 153 0 158 0 0 lo0 16896 ::1 153 0 158 0 0 With the lsmap -all -net command, we determine that ent2 is defined as a shared Ethernet adapter mapping physical adapter ent0 to virtual adapter ent1: SVEA Physloc ------ -------------------------------------------- ent1 U9111.520.10DDEDC-V4-C2-T1 SEA Backing device Physloc ent2 ent0 U787A.001.DNZ00XY-P1-C2-T1 The information for the default gateway address is provided by the netstat -routinfo command: Routing tables Destination Gateway Flags Wt Policy If Cost Config_Cost Route Tree for Protocol Family 2 (Internet): default 9.3.5.41 UG 1 - en2 0 0 9.3.5.0 9.3.5.147 UHSb 1 - en2 0 0 => 9.3.5/24 9.3.5.147 U 1 - en2 0 0 9.3.5.147 127.0.0.1 UGHS 1 - lo0 0 0 9.3.5.255 9.3.5.147 UHSb 1 - en2 0 0 127/8 127.0.0.1 U 1 - 0 0 0 To list the subnet mask, we use the lsdev -dev en2 -attr command: netmask 255.255.255.0 Subnet Mask True Chapter 5. System management 293
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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
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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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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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