41CO Operation and Maintaining PowerVM VIOS with IBM ischd.ws/hosted_files/commons17/6a/41CO...

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Cognitive Systems

41CO Operation and Maintaining PowerVM VIOS with IBM iGary Konicek – konicek@us.ibm.comIBM Lab Services

170299

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Fix Strategy – before June 2015

• Service packs (SPs):

– Miscellaneous enhancements and fixes

– ie 2.2.1.3-FP25 SP-01

– Must be applied to the correct Fix pack

– Optional installation: to get enhancements

– Released as needed

• Interim fixes (iFix):

– Specific fix – like an individual PTF

– ie VIOS_2.2.0.10_IZ90550

• Base releases:

– i.e. 2.2.1.0

– i.e. 2.2.3.0

– Releases are supported for 36 months or more

– ioslevel command shows current release level of VIOS

• Cumulative fix packs (FPs):

– Contain fixes and new function

– ie 2.2.1.1-FP25

VIOS maintenance strategy: https://www-304.ibm.com/webapp/set2/sas/f/vios/svcstrategy.html

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Fix Strategy – post June 2015

• VRMF – Version – Release – Maintenance – Fix level

– VIOS release eg v1.5.0, v2.2.1, v2.2.2, v2.2.3, v2.2.4 (announced 10/5)

• ioslevel command shows current level

– VIOS service pack - eg v2.2.1.7, v2.2.2.3, v2.2.3.4, v2.2.3.50 (new)

• Fix level for service packs will be multiple of 10 (ie 2.2.3.50, 2.2.3.60, etc)

– VIOS mini pack – eg v2.2.3.51, v2.2.3.52

• Fix level for minipacks will increment by 1’s off the associated service pack (ie 2.2.3.51, 2.2.3.52, etc)

• Minipacks will be associated with service pack level

• Interim fixes (iFix):

– Specific fix – like an individual PTF

– ie VIOS_2.2.0.10_IZ90550

VIOS maintenance strategy: https://www-304.ibm.com/webapp/set2/sas/f/vios/svcstrategy.html

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Update Process

• Access fixes and new release levels from IBM Fix Central

• http://www.ibm.com/support/fixcentral/

Run ioslevel command to find out current version

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Sample downloads

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Fix Pack upgrade information – Same version example

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Fix Pack upgrade information – New version example

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Download fixes

• Download fix package

– Some use .iso files to burn to media

– Some use packages of files to be FTP’d to VIOS

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Use the read me instructions

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Things to watch out for

• Don’t make assumptions on fix apply steps• Follow the documented steps

• Use –accept parameter on updateios command

• License acceptance required on some fixes

• When not entered can give very confusing messages

• Media problems messages can be cryptic• geninstall failures

• Fix content verification can show failure messages• Check read me documentation

• lssw (list software) command is often used to check software levels

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Installation Summary Example from lssw command

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Adapter Firmware Updates

• Occasionally, adapter firmware updates will be recommended before a VIOS Update

• Documented on Fix Level Recommendation Tool or VIOS Readme

• Use lsfware –all to see current firmware levels for system and adapters

• User VIOS command diagmenu

• HMC server firmware update

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VIOS Management Interfaces

• When implementing VIOS on Power Servers, there are two primary ways to manage VIOS partitions

• HMC

• For configuring/sharing resources that are virtualized to client partitions

• VIOS command line

• For configuring/sharing resources that are virtualized to client partitions

• For management and operations of the VIOS operating system and data

• Other options

• Integrated Virtualization Manager on Power blades and scale out Power Servers

• Flexible Service Manager on PureFlex / Flex nodes

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HMC – Virtual Resources – Enhanced+

Manage Virtual Disk, Optical, Tape

Manage Virtual Ethernet

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Virtual Storage – Enhanced+ - Client Focus

• Virtual SCSI – Storage View

– VIOS resource name, IBM i resource name

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• Virtual SCSI – Adapter View

– IBM i resource name, adapter slot : VIOS resource name, adapter slot

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• Virtual Fiber Channel – Storage View

– IBM i resource name, VIOS physical port, virtual WWPN

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• Virtual Fiber Channel – Adapter View

– IBM i resource name, adapter slot; VIOS resource name, adapter slot; VIOS Physical port; virtual WWPN

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Manage Physical Volumes - Classic

• Make virtual device: mkvdev (maps a volume to a virtual adapter)

• Example: mkvdev –vdev hdisk7 –vadapter vhost0

• Change device attributes: chdev

• List device attributes: lsdev

• List physical volume: lspv

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Manage Optical Devices

Make virtual media repository: mkrep

Make virtual optical media file: mkvopt

Load/unload media: loadopt / unloadopt

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Manage Virtual Fibre Channel - Classic

• Map virtual fibre channel ports: vfcmap

– Example: vfcmap –vadapater vfchost7 –fcp fcs4

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Use HMC to Create Shared Ethernet Adapters

• Forces user to make one VIOS Primary and one Secondary for each SEA• Prevents broadcast storm

• Requires control channel to be created before creating SEA with failover• Change specific settings using chdev after building the SEA if necessary

Manage Profiles or Dynamic Partitioning Virtual Network Management

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Reconfiguring Shared Ethernet Adapters

• When changing configuration of a shared ethernet adapter, a delete and recreate of the SEA is often required:

• i.e., changing VLANs, adding aggregated links, etc.

• HMC will provide list of steps needed to properly remove the SEA so you can create it again

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Use lsdev Command to View Devices in VIOS

• lsdev –dev hdisk* or lsdev | grep hdisk

• lsdev –dev ent* or lsdev | grep ent

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List Attributes of a Device

• Change attribute with: chdev –dev ent6 –attr attribute=value -perm

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List Vital Product Data (VPD) of a Device

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Storage Mapping – VSCSI and NPIV

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List Virtual Adapter Slots

HMC and lsdev -slots Command

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Working with the VIOS operating system

• Install VIOS• installios

• HMC Virtual I/O Server Image Repository

• Physical DVD media via system DVD drive or HMC DVD drive

• Update VIOS (upgrade or apply fixes) – updateios

• Mirror the VIOS disk - mirrorios

• Backup VIOS – backupios

• View VIOS release level – ioslevel

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Working with VIOS users

• Make (create) a new user account – mkuser *

• Change attributes of a user account – chuser

• Remove a user account – rmuser

• List user attributes – lsuser

• Change user password – passwd

* NOTE: Attributes of a user are not documented in the VIOS command reference

for mkuser but they are documented on the chuser command

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View VIOS Logs

• View VIOS error log: errlog

• View VIOS error log one page at a time with details: errlog -ls | more

• Clear messages from the VIOS error log: errlog –rm <Days>

• View install log: cat install.log | more

• View command log: cat ioscli.log

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VIOS Menu Interface - cfgassist

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Backing up VIOS

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Backup Process and Options

• Backup has a couple of options

• Backup VIOS configuration to a file in VIOS (viosbr)• User-defined virtual resources

• Used for restoring to the same VIOS partition from which it was backed up

• Backup VIOS running environment (backupios)• Base code, fix packs, custom device drivers, and some user-defined metatdata

• backupios target can be a:

• Tape

• DVD-RAM

• File (File server, NIM server, etc.)

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backupios command overview

• The backupios command creates a backup of the Virtual I/O Server and places it onto a file system, bootable tape, or DVD.

• Use it to reinstall a system to its original state if it has been corrupted.

• IBM Knowledge Center:• https://www-01.ibm.com/support/knowledgecenter/8286-42A/p8hb1/p8hb1_vios_backup_backup.htm

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viosbr command overview

• viosbr -backup -file <FileName>

• backs up: • Logical devices

• storage pools, file-backed storage pools, the virtual media repository, and PowerVM Active Memory Sharing (AMS) paging devices.

• Virtual devices• Etherchannel, shared Ethernet adapters (SEAs), virtual server adapters, and server virtual

fibre channel (SVFC) adapters.

• Includes the device attributes

• To the /home/padmin directory

• After recovering VIOS, restore configuration with following command• viosbr –restore –file <FileName>

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When Should I Backup VIOS?

• Backup VIOS

• After initial install and configuration

• Before and After a VIOS update or upgrade

• After virtual devices or physical adapters are added / changed

• Monthly or quarterly in case you forgot to backup after making changes

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File Management

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VIOS File Systems

• VIOS is installed in several file systems and the available storage for each file system may need to be modified to ensure you have enough storage for files and data

• Service packs and fixes for VIOS

• File sets, products etc. that you will install on the client LPARs

• Available storage can be displayed on all mounted file systems with the df command

• displayed as number of 512-byte blocks

• to display in GBs, use df –g

• command can be run from VIOS or the root shell

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Viewing Storage Usage

• Iused = Inodes Used

• An inode is a data structure used to store file attributes for all files

• If Inode Used = 100%, you won’t be able to create more files in the file system

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Changing the Size of a File System

• Increase or decrease file system storage with the chfs command

• Example: increase size of file system mounted on /home by 2GB

• chfs –a size=+2G /home

• The chfs command must be run from the unrestricted shell

• oem_setup_env (to enter unrestricted shell)

• Increasing the size of a file system will increase the number of inodes available in that file system

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Monitoring

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VIOS Monitoring Tools

• VIOS Performance Advisor

– Monitors VIOS and provides a health check report

– Recommends configuration changes or areas to investigate

– Packaged as part of VIOS Version 2.2.2 and beyond

• IBM iDoctor for i – VIOS Investigator

– Collection of storage metrics using topas_nmon data with import into iDoctor

– iDoctor analysis produces reports/graphs on VIOS storage performance

– Disk storage mapping is available between IBM i disks and VIOS disks

– Both Virtual SCSI and NPIV are now supported

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Performance Advisor: How does it work?

• Polls key performance metrics for over a period of time• Analyzes the data• Produces an XML formatted report for viewing in a browser• “part” command is available in VIOS restricted shell

– (Performance Analysis and Reporting Tool).

• “part” command can be executed in two different modes– Monitoring Mode (actually uses nmon recording now)– Post Processing nmon Recording Mode

• The final report along with the supporting files are bundled together in a “tar” formatted file

• Users can download and extract it to their PC or machines with browser installed to view the reports in a browser.

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Transfer and view report

Monitoring Mode: 5 to 60 minutes

IBM Virtual I/O Server

login: padmin

$ part -i 30

IBM Virtual I/O Server

login: padmin

$ part -f vio1_130915_1205.nmon

Post-processing nmon recording

Transfer the generated tar file to

a machine with browser support

Extract the tar file

Load *.xml file in browser

Collect data

- or -

VIOS Performance Advisor: Process

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VIOS Performance Advisor: Browser view

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VIOS Performance Advisor: IO total and disks

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FC utilization

based on peak

IOPS rates

VIOS Performance Advisor: FC details

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“part” command$ part -?

usage: part {-i INTERVAL | -f FILENAME} [-t LEVEL] [--help|-?]

-i <minutes> interval can range between 10-60

-f <file> any nmon recording

-t <level> 1 - Basic logging, 2 - Detailed logging

-? usage message

-f filename

Specifies the nmon recording to be analyzed by the part command and generates advisory reports based on the recording.

-i Interval

Specifies the duration for which the part command must monitor the VIOS and generate advisories based on it.

-t level

Specifies the trace level, which is either 1 or 2 for basic, detailed tracing, and logging facility respectively.

Note: Options -i and -f are mutually exclusive.

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iDoctor VIOS Investigator – Start Data Collection menu in GUI

• First add VIOS partitions to the iDoctor connection list

• Use this wizard to start an NMON collection via iDoctor GUI

• SSH 2.0+ must be installed on the VIOS.

• The user id must be authorized to run topas_nmon

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Disk Mapping Detail

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Disk path rankings graph (requires Disk Mapping)

• Example showing I/O rates per IBM i unit/resource name

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Analyzing NPIV: Advanced graphs example - Total writes [VFC]

• Advanced graphs show a single metric on each Y axis

• Example: Show each virtual fibre channel adapter mapped to the same physical port. Identify who is using the physical resource.

#COMMONS17www.common.org

Don’t Forget Your Session Surveys

• Sign in to the Online Session Guide (www.common.org/sessions)

• Go to your personal schedule

• Click on the session that you attended

• Click on the Feedback Survey button located above the abstract

Completing session surveys helps us plan future programming and provides feedback used in speaker awards. Thank you for your participation.

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https://facebook.com/IBMPowerSystems

https://twitter.com/IBMPowerSystems

https://www.linkedin.com/company/ibm-power-systems

IBM Power Systems Official Channels:

http://www.youtube.com/c/ibmpowersystems

https://www.ibm.com/blogs/systems/topics/servers/power-

systems/

Power Systems Social Media

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More to Follow:

Blogs to Follow More to Follow Hashtags To Use

• IBM Systems Magazine You and I (Steve Will)

• IBM Systems Magazine i-Can (Dawn May)

• IBM Systems Magazine: iDevelop (Jon Paris and

Susan Gantner)

• IBM Systems Magazine: iTalk with Tuohy

• IBM DB2 for i (Mike Cain)

• IBM DB2 Web Query for i (Doug Mack)

@IBMSystems@COMMONug

@IBMChampions@IBMSystemsISVs

@LinuxIBMMag@OpenPOWERorg

@AIXMag@IBMiMag

@SAPonIBMi@SiDforIBMi

@IBMAIXeSupp@IBMAIXdoc

#PowerSystems

#IBMAIX

#POWER8

#LinuxonPower

#OpenPOWER

#HANAonPower

#ITinfrastructure

#OpenSource

#HybridCloud

#BigData

41CO Operation and Maintaining PowerVM VIOS with IBM ischd.ws/hosted_files/commons17/6a/41CO...

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