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

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Supported multi-path configurations in a SAN environment When discussing a supported configuration with MPIO, you need to distinguish two different scenarios: ► ► One Virtual I/O Server attaching a LUN in the SAN over more than one path. In this case, you only need to implement multi-path software on the Virtual I/O Server. Having multiple Virtual I/O Servers connect to the same LUN and backed up to the same client. In this case, the client partition uses MPIO to access the virtual disk as a single device. You may also consider using multi-path software on the Virtual I/O Server to access the LUN over more than one path for path failover and load balancing. Note: This redbook only covers IBM storage solutions. For support statements of other storage vendors, contact your IBM representative or your storage vendor directly and ask for specifications on supported configurations. Supported IBM TotalStorage solutions At the time of writing, the TotalStorage Enterprise Server includes the following models: ► 2105 Enterprise Storage Server® (models 800, 750, and Fxx) ► 2107 Model 921 IBM TotalStorage DS8100 ► 2107 Model 922 IBM TotalStorage DS8300 ► 2107 Model 9A2 IBM TotalStorage DS8300 ► 2107 Model 92E IBM TotalStorage DS8000 Expansion Unit ► 2107 Model 9AE IBM TotalStorage DS8000 Expansion Unit ► 1750 Model 511 IBM TotalStorage DS6800 ► 1750 Model EX1 IBM TotalStorage DS6000 Expansion Unit When attaching the Virtual I/O Server to a IBM TotalStorage DS Family, the RDAC driver is used on the Virtual I/O Server. At the time of writing, the IBM TotalStorage DS Family include the following models: ► DS4100 (FAStT100) ► DS4200 (FAStT200) ► DS4200 (FAStT600) ► DS4400 (FAStT700) ► DS4500 (FAStT900) ► FAStT500 Storage Server 242 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
For other supported IBM Storage solutions, such as the TotalStorage SAN Volume Controller, check the official IBM Web site: http://www14.software.ibm.com/webapp/set2/sas/f/vios/documentation/home .html Using MPIO or other multi-path software There are different multi-path software products supported on the Virtual I/O Server. The following example scenarios will point out which multi-path software is supported in the different configurations. The Virtual I/O Server uses several methods to uniquely identify a disk for use as a virtual SCSI disk. They are: ► Unique device identifier (UDID), used by MPIO ► IEEE volume identifier, used by RDAC with the DS4000 family of products ► Physical volume identifier (PVID), used by other multi-path software Most non-MPIO disk storage multipathing software products use the PVID method instead of the UDID method. Because of the different data format associated with the PVID method, clients with non-MPIO environments should be aware that certain future actions performed in the Virtual I/O Server partition may require data migration, that is, some type of backup and restore of the attached disks. These actions may include but are not limited to the following: ► Conversion from a Non-MPIO environment to MPIO ► Conversion from the PVID to the UDID method of disk identification ► Removal and rediscovery of the Disk Storage from ODM entries ► Updating non-MPIO multipathing software under certain circumstances ► Possible future enhancements to VIO For all configuration, we strongly recommend using MPIO with the appropriate path control module to avoid this migration effort in the future. Note: Use the oem_setup_env command for installing and configuring the multi-path environment on the Virtual I/O Server. All other configurations must be done from the padmin command line interface to avoid invalid configurations. Chapter 4. Setting up virtual I/O: advanced 243
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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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Page 226 and 227: In Figure 4-11 on page 201, a clien
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Page 244 and 245: Checking which SEA is active Checki
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Page 258 and 259: To determine which path will use th
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Page 284 and 285: 5.1 Dynamic LPAR operations This se
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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
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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
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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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