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The following is a list of empty SCSI Hot Swap Enclosure device slots: slot 3 [empty slot] In this example, slot 3 is the only available empty slot. When you choose the empty slot, a screen will come up telling you to attach the device and hit Enter to return the LED to the normal state of operation After this, return to the previous menu and choose the List Hot Swap Enclosure Devices option in the menu and you will see the output shown in Example 5-17. Example 5-17 Hot Swap Enclosure Devices list The following is a list of SCSI Hot Swap Enclosure Devices. Status information about a slot can be viewed. Make selection, use Enter to continue. Slot 3 still shows up without an hdisk in it, but as populated. Run the cfgdev command to initialize the disk on the VIOS command line; after returning to this menu, you will see that hdisk1 now appears in slot 3: U787B.001.DNW0974- ses0 P1-T14-L15-L0 slot 1 P1-T14-L8-L0 hdisk3 slot 2 P1-T14-L5-L0 hdisk2 slot 3 [populated] slot 4 P1-T14-L3-L0 hdisk0 U787B.001.DNW0974- ses0 P1-T14-L15-L0 slot 1 P1-T14-L8-L0 hdisk3 slot 2 P1-T14-L5-L0 hdisk2 slot 3 P1-T14-L4-L0 hdisk1 slot 4 P1-T14-L3-L0 hdisk0 5.4.3 Recovering from a failed VIOS disk If a disk failure occurs on a Virtual I/O Server, there are several steps that you need to perform before full recovery is achieved. While getting the failed disk replaced is the key step to recovery, cleaning up the VIOS and the client partition also needs to happen before the rebuilding step is taken. 308 <strong>Advanced</strong> <strong>POWER</strong> <strong>Virtualization</strong> on IBM System p5
The errlog command is used to view what errors have occurred the VIOS. In this case, the following report is produced: IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION 613E5F38 0114201370 P H LVDD I/O ERROR DETECTED BY LVM 8647C4E2 0114201370 P H hdisk1 DISK OPERATION ERROR 613E5F38 0114201370 P H LVDD I/O ERROR DETECTED BY LVM 8647C4E2 0114201370 P H hdisk1 DISK OPERATION ERROR 613E5F38 0114201370 P H LVDD I/O ERROR DETECTED BY LVM 8647C4E2 0114201370 P H hdisk1 DISK OPERATION ERROR As displayed in the error report, hdisk1 has failed on the VIOS. This disk was not part of a RAID set and was not mirrored, so its failure constitutes a fatal error on the VIOS, as logical volumes were lost. Note: The use of a SCSI RAID set for client volume groups is recommended to prevent possible failures due to the loss of a SCSI disk. The volume group clientvg had logical volumes for the root volume groups of clients plus a logical volume for the NIM volume group of a client. The virtual SCSI target and device are still available on the system, as they are not directly connected to the hard disk that failed: vhost0 Available Virtual SCSI Server Adapter vhost1 Available Virtual SCSI Server Adapter vhost2 Available Virtual SCSI Server Adapter vsa0 Available LPAR Virtual Serial Adapter vcl1nimvg Available Virtual Target Device - Logical Volume vcl1rootvg Available Virtual Target Device - Logical Volume vcl2rootvg Available Virtual Target Device - Logical Volume However, the logical volumes that were located on the failing disk are now gone, and rebuilding of the logical volumes and the virtual SCSI target devices is required. Run diagmenu and select Task Selection → Hot Plug Task → SCSI and SCSI RAID Hot Plug Manager to see the following option: Replace/Remove a Device Attached to an SCSI Hot Swap Enclosure Device This option starts the procedure for replacing the faulty disk. The sequence of identifying the disk, replacing, and completing the task is completed in a similar fashion to an AIX 5L partition. Chapter 5. System management 309
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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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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
Page 284 and 285: 5.1 Dynamic LPAR operations This se
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Page 292 and 293: 5.1.3 Add memory dynamically in AIX
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Page 302 and 303: 1. Use the diagmenu command to unco
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Page 330 and 331: hd3 jfs2 1 2 2 open/syncd /tmp hd1
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Page 354 and 355: 5.5.4 The topas command The topas c
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Page 366 and 367: Note: The variable capacity weight
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Page 370 and 371: The sysstat command The sysstat com
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Page 374 and 375: 5.5.7 Monitoring with PLM The Parti
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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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