7d4356eb3479d281c74001682db9faba.ppt
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IBM Power Systems Power. VM Live Partition Mobility César Diniz Maciel Executive IT Specialist IBM Global Techline cmaciel@us. ibm. com © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Live Partition Mobility Move a running partition from one POWER 6 or POWER 7 server to another with no application downtime §Reduce planned downtime by moving workloads to another server during system maintenance §Rebalance processing power across servers when and where you need it Live Partition Mobility requires the purchase of the optional Power. VM Enterprise Edition IBM i only supports LPM between POWER 7 systems 2 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Partition Mobility: Active and Inactive LPARs Active Partition Mobility § Active Partition Migration is the actual movement of a running LPAR from one physical machine to another without disrupting the operation of the OS and applications running in that LPAR. § Applicability § Workload consolidation (e. g. many to one) § Workload balancing (e. g. move to larger system) § Planned CEC outages for maintenance/upgrades § Impending CEC outages (e. g. hardware warning received) § Ability to move from Power 7 servers to Power 8 servers (when available) without an outage Inactive Partition Mobility § Inactive Partition Migration transfers a partition that is logically ‘powered off’ (not running) from one system to another. Suspended Partition Mobility § Suspended Partition Migration transfers a partition that is suspended from one system to another. 3 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference What Live Partition Mobility Isn’t § It is not a replacement for High Availability. – It is not automatic. – LPARs cannot be migrated live from failed CECs. – Failed OS’s cannot be dynamically migrated. § It is not a Disaster Recovery Solution. – For the same reasons as above. – Migration across long distances not supported in first delivery. – Additional SAN and LAN considerations to treat. © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Requirements – AIX/Linux Software Ø HMC/Firmware Ø version 7 releases 3. 2 Ø Note that for POWER 7 it has to be the minimum level supported with the system Ø Firmware service 01 Ex 320 (POWER 6), or later – All POWER 7 systems are supported (except the Power 755 and Power 775) Ø Power. VM Enterprise Edition Ø VIOS 1. 5. 1. 1 or later (VIOS 2 or later on POWER 7) Ø Supported client operating systems Ø AIX 5. 3 TL 7 SP 1, AIX 6 and AIX 7 Ø Red. Hat Linux 5 U 1 or later Ø Su. SE 10 or later I/O Ø All I/O through the VIOS Øv. SCSI, NPIV, Virtual Ethernet Ø External Storage ØStorage must be SAN-attached to both source and target systems Ø POWER 6 or POWER 7 processor-based systems ØBoth source and destination on same Ethernet network 5 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Requirements – IBM i Software Ø HMC/Firmware Ø version 7 releases 7. 5 Ø Firmware service pack 730_xx, 740_xx, or later Ø Power. VM Enterprise Edition Ø VIOS 2. 2. 1. 4 Ø Supported client operating systems Ø IBM i 7. 1 TR 4 I/O Ø All I/O through the VIOS Øv. SCSI, NPIV, Virtual Ethernet Ø External Storage ØStorage must be SAN-attached to both source and target systems Ø POWER 7 processor-based systems ØBoth source and destination on same Ethernet network 6 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Live Partition Mobility System #1 System #2 Suspended Partition 1 M M M M A en 0 vscsi 0 Shell Partition 1 Once enough memory Finish the migration Validate environment pages migrating and shell partition Create remove SCSI Create virtual the Start have been for appropriate moved, suspend the on target system memory LPAR original pages devices resources source system definitions M M M M ent 0 HMC Hypervisor VASI vhost 0 vtscsi 0 ent 2 SEA fcs 0 ent 0 vscsi 0 VLAN Hypervisor ent 1 Mover Service A ent 0 VLAN en 0 ent 1 ent 2 SEA vtscsi 0 Mover Service VIOS VASI en 2 (if) vhost 0 ent 0 fcs 0 Storage Subsystem A 7 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference If using 5250 interactive support, ensure both the source and target systems have the "5250 application capable" set to “True”. AIX Active Memory Expansion is another HW capability that must be available on target system if being used on source system 8 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference VIOS - Mover service partition (MSP) § Required for ACTIVE Partition Mobility only § Maximum of four (4) concurrent migrations per control point – With Power. VM 2. 2. 2, maximum of 8 concurrent migrations per MSP § Provides VIOS functions: – Asynchronously extracts, transports, installs partition state during migrations 9 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Can have 2 MSPs for a total of 16 concurrent Migrations with Power. VM 2. 2. 2 10 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference No Required, only Desired virtual adapters allowed 11 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Restrictions § The logical partition must have all disks backed by physical volumes. § The logical partition must not be assigned a virtual SCSI optical or tape device or an NPIV attached tape device. § The logical partition cannot be activated with a partition profile which has a virtual SCSI server adapter: can not be hosting another partition. § The logical partition cannot be activated with a partition profile which has a virtual SCSI client adapter that is hosted by another IBM i logical partition § No virtual SCSI server adapters can be dynamically added to the logical partition. § No virtual SCSI client adapters that are hosted by another IBM i logical partition can be dynamically added to the logical partition being moved. § The logical partition must not be an alternative error logging partition. – An alternative error logging partition is a target from the HMC for error logs. § The logical partition cannot collect physical I/O statistics. § The logical partition must not be a time reference partition. – Used to synchronize time between partitions • The VIOS partitions will synchronize the time automatically as part of the migration 12 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Restricted IO Partition § During validation, if the partition has any of the following “restricted resources”, the validation fails: – Virtual server is designated as service partition. – Server SCSI adapter. – Client SCSI adapter. – BSR array. – Huge pages. – Is EWLM virtual server – Redundant error path reporting virtual server. – Incompatible LMB size. – More than one VASI adapter. – HCA adapter. – Is a system profile. – Virtual Opticonnect adapter – Physical Opticonnect adapter. – Is a member of a failover pool. – VTERM open. 13 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference v. SCSI Zoning Source VIOS IBM i Client (System 1) System 1 FC HBA Hypervisor Destination POWER 7 with IBM i 7. 1 TR 4 VIOS FC HBA All zoning is done to the physical HBA in the VIOS Assign storage to the physical HBAs in both the VIOS lpars Make sure to set no_reserve on the hdisks (chdev -dev hdisk. X attr reserve_policy=no_reserve) Hypervisor POWER 7 with IBM i 7. 1 TR 4 14 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference NPIV Zoning for Mobility Source System 1 IBM i Client (System 1) VIOS 8 Gbs HBA Hypervisor POWER 7 with IBM i 7. 1 TR 4 Destination VIOS 8 Gbs HBA 1. Zone your storage ports to both WWPNs on the Virtual Fibre Channel Adapter. 2. No need to zone physical WWPNs to the storage. Hypervisor POWER 7 with IBM i 7. 1 TR 4 3. Only assign storage to the virtual WWPNs 15 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Virtual LAN requirements § The migrating partition uses the virtual LAN for network access. – Must be bridged to a physical network using a shared Ethernet adapter in the VIOS partition. – Must be configured such that migrating partitions can continue to communicate with other necessary clients and servers after a migration is completed. • The VLAN IDs used must exist on both systems. 16 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Source Managed System – Migrating From Destination Managed System – Migrating To 17 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Logical Partition Mobility - Process § Validate - Live Partition Mobility and Mobility Readiness Check § Select the partition to be validated § Operations –> Mobility -> Validate 18 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference 19 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration Validation – components involved 20 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference HMC validation § Checks the source and destination systems, POWER Hypervisor, Virtual I/O Servers, and mover service partitions for active partition migration capability and compatibility § Checks that the RMC connections to the mobile partition, the source and destination Virtual I/O Servers, and the connection between the source and destination mover service partitions are established § Checks that there are no required physical adapters in the mobile partition and that there are no required virtual serial slots higher than slot 2 § Checks that no client virtual SCSI disks on the mobile partition are backed by logical volumes and that no disks map to internal disks § Checks the mobile partition, its OS, and its applications for active migration capability. § Checks that the logical memory block size is the same on the source and destination systems § Checks that the mobile partition is not configured with barrier synchronization registers § Checks that the mobile partition is not configured with huge pages § Checks that the partition state is active or running § Checks that the mobile partition is not in a partition workload group § Checks the uniqueness of the mobile partition’s virtual MAC addresses § Checks that the mobile partition’s name is not already in use on the destination server § Checks the number of current active migrations against the number of supported active migrations 21 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference § No Network Connection – RMC won’t function § Internal Storage would cause another failure on Validation - must be shared external storage 23 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migrate 24 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard 25 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 26 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 27 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 28 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 29 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 30 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Migration wizard continued… 31 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Performance Considerations § Active partition migration involves moving the state of a partition from one system to another while the partition is still running. – Partition memory state is tracked while transferring memory state to the destination system – Multiple memory transfers are done until a sufficient amount of clean pages have been moved. § Memory updates on the source system affect transfer time – Reduce the partition’s memory update activity prior to the migration § Network speed affects the transfer time – Use a dedicated network, if possible – At least 1 Gb speed § Recommend using link aggregated ports for redundancy § Power. VM 2. 2. 2 increases memory migration performance by 3 x! 32 © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Destination partition looks like the source partition § Partition name is the same. § Logical partition configuration is the same – min, online, and max logical cpus – min, online, and max logical memory blocks – min, actual, and max entitled capacity § Same processor interface – Instructions, feature set, cache line size, reservation granule size, … § Same FW interface § Same Logical Device Configuration – Virtual MAC addresses – Same IP addresses – Same LUN map to target devices © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Destination partition is different from source partition § Partition number is different § Server serial number § Maximum number of potential (hot pluggable) and installed physical processors § Maximum number of PHBs that can be configured § The model class (i. e. D 5 -> H 5 server is supported) § L 1 and L 2 cache characteristics – Cache size and associativity – No functional issues here, just performance issues © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Applications that would want to know about migration § § § § § License Managers Capacity planning and chargeback tools Performance analysis tools Workload managers like LL, PLM, e. WLM Power. HA CSM / RSCT Uninterruptible power supply (UPS) programs L 1 cache aware programs – Java JIT builds optimized instruction streams – Some HPC programs carefully lay out data Programs that use processor and memory affinity © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Thank you!! César Diniz Maciel cmaciel@us. ibm. com © 2012 IBM Corporation
IBM Power Systems STG Technical Enablement Conference Special notices This document was developed for IBM offerings in the United States as of the date of publication. IBM may not make these offerings available in other countries, and the information is subject to change without notice. Consult your local IBM business contact for information on the IBM offerings available in your area. Information in this document concerning non-IBM products was obtained from the suppliers of these products or other public sources. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products. IBM may have patents or pending patent applications covering subject matter in this document. The furnishing of this document does not give you any license to these patents. Send license inquires, in writing, to IBM Director of Licensing, IBM Corporation, New Castle Drive, Armonk, NY 10504 -1785 USA. All statements regarding IBM future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. The information contained in this document has not been submitted to any formal IBM test and is provided "AS IS" with no warranties or guarantees either expressed or implied. All examples cited or described in this document are presented as illustrations of the manner in which some IBM products can be used and the results that may be achieved. Actual environmental costs and performance characteristics will vary depending on individual client configurations and conditions. IBM Global Financing offerings are provided through IBM Credit Corporation in the United States and other IBM subsidiaries and divisions worldwide to qualified commercial and government clients. Rates are based on a client's credit rating, financing terms, offering type, equipment type and options, and may vary by country. Other restrictions may apply. Rates and offerings are subject to change, extension or withdrawal without notice. IBM is not responsible for printing errors in this document that result in pricing or information inaccuracies. All prices shown are IBM's United States suggested list prices and are subject to change without notice; reseller prices may vary. IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply. Any performance data contained in this document was determined in a controlled environment. Actual results may vary significantly and are dependent on many factors including system hardware configuration and software design and configuration. Some measurements quoted in this document may have been made on development-level systems. There is no guarantee these measurements will be the same on generallyavailable systems. Some measurements quoted in this document may have been estimated through extrapolation. Users of this document should verify the applicable data for their specific environment. Revised September 26, 2006 38 © 2012 IBM Corporation
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