Application and Partition Mobility

Transcription

1 IBM System p Application and Mobility Francis COUGARD IBM Products and Solutions Support Center Montpellier Copyright IBM Corporation 2009

2 Index Application and Mobility Presentation Videocharger and DB2 VPS Mobility Demonstration 2

3 IBM System p Application Mobility Presentation An AIX Version 6 Feature Francis COUGARD IBM Products and Solutions Support Center Montpellier Copyright IBM Corporation 2009

4 AIX s Improved administrative efficiency by reducing the number of AIX images to maintain Software partitioned system capacity Each obtains a regulated share of system resources Each can have unique, filesystems and security Two types of s System s Application s Separate administrative control Each System partition is a separate administrative and security domain Shared system resources Operating System, I/O, Processor, Memory Application Server BI Test Web Server AIX Billing Test Separate regions of application space within a single AIX image 4

5 IBM Power Systems AIX Virtualization Continuum AIX s complement Logical s LPAR / Micropartitions AIX V5.3 on POWER5 or later Resource Flexibility AIX Manager AIXV on POWER3 or later s AIX 6 on POWER4 or later Isolation 5

6 Two WPAR AIX Offerings AIX 6 s (WPAR) included in AIX 6 Element (single system) WPAR Management s Manager Enablement for Live Application Mobility Cross System Management for s Automated, Policy-based Application Mobility Part of IBM System Director Family WPAR Manager 6

7 AIX Live Application Mobility Move a running from one server to another for outage avoidance and multi-system workload balancing Web AIX App Server Dev s Manager Policy Data Mining AIX Billing QA Works on any hardware supported by AIX 6, including POWER5 and POWER4 7

8 Bibliography SG

9 IBM System p Mobility Presentation A Power 6 Feature Francis COUGARD IBM Products and Solutions Support Center Montpellier Copyright IBM Corporation 2009

10 PowerVM Enhancements Live Mobility Live Mobility requires the purchase of the optional PowerVM Enterprise Edition Move a running partition from one POWER6 processorbased server to another with no application downtime Movement to a different server with no loss of service Virtualized SAN SAN and and Network Infrastructure Reduce planned downtime by moving workloads to another server during system maintenance Rebalance processing power across servers when and where you need it 10

11 Mobility: Active and Inactive LPARs Active Mobility Active 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 consolidation (e.g. many to one) balancing (e.g. move to larger system) Planned CEC outages for maintenance/upgrades Impending CEC outages (e.g. hardware warning received) Inactive Mobility Inactive Migration transfers a partition that is logically powered off (not running) from one system to another. Mobility supported on POWER6 AIX 5.3, AIX 6.1 and Linux 11

12 Hardware / software requirements Minimum of two POWER6-based systems Advanced Power virtualization (APV) = PowerVM Enterprise Edition required Storage Area Network (SAN) Supported by Virtual I/O Server (VIOS) Virtualization Manager Hardware Management Console (HMC) Integrated Virtualization Manager LAN (Gbit Minimum) between both Virtual I/O Servers efw 3.2 Operating System Minimum Level AIX Version 5.3 Technology Level 7 AIX6.1 Linux RHEL V5 update 1 Linux SLES 10 Service pack 1 12

13 Mobility virtualized components and required level Virtual Disk Mapped through VIO Server to a LUN Virtual Ethernet Mapped through SEA in VIO Server Hypervisor vscsi Virtual Ethernet Support for migration VIO Server Provides the Virtual I/O VASI interface to Hypervisor Mover Service (MSP) Must be at release level 1.5 or later HMC Configuration of required capabilities Validation of configuration Orchestrates the sequence of events version and release must be at V7R320 or later VASI = Virtual Asynchronous Services Interface Private HMC HYPV Service processor vhost0 VASI MSP Ethernet Network System A ent1 virt en0 hdisk0 vfscsi0 en2 if ent2 SEA ent0 Lpar 1 hdiskx fsc0 VIO Storage Area Network LUN 13

14 Mobility Preparation task The same LMB (Logical Memory Block) size on each System Must have sufficient resources (e.g. CPU & Memory) available No partition with the same name as the one which is to be Migrated LPAR mig1 HYPV System A HYPV System B en0 hdisk0 vfscsi0 vhost0 HMC hdiskx fsc0 en2 if ent2 SEA ent0 VASI MSP ent1 virt Service processor Private PUblic Private Service processor VASI MSP ent1 virt en2 if ent2 SEA ent0 hdiskx fsc0 Ethernet Storage Area Network LUN 14

15 Mobility Basic requirements The partition to be Migrated : Not set for Redundant error path reporting No additional Virtual Serial ports Not part of a group Not using Barrier Synchronization Register Not using Huge Pages Not using physical I/O Disk Setup All systems in a migration domain must be connected on a Storage Area Network (SAN) to shared physical disks - No internal or VIOS-based disks SAN disks must be configured to be visible from both systems Both redundant, that is, Multi-Path I/O (MPIO), and non-redundant Virtual SCSI configurations supported * Important Planning Note: All user-defined virtual devices must have a Virtual Slot number higher than 10. This will be enforced by the HMC code. 15

16 Migration Flow User identifies migrating partition and systems involved in migration Verification test is performed target system equivalency Migration is initiated on source system Data is transferred from source to target system When a percentage of data has been transferred is suspended on source system resumes execution on target system When all data has been transferred Migration completes resources on source system are freed If an error is detected at any point, migration is aborted 16

17 Mobility Initial steps System A System B LPAR mig1 HYPV HYPV en0 hdisk0 hdiskx vfscsi0 en2 if vhost0 VASI MSP HMC vhost0 VASI MSP en2 if vfscsi0 hdiskx fsc0 ent2 SEA ent0 ent1 virt Service processor Private PUblic Private Service processor ent1 virt ent2 SEA ent0 fsc0 Ethernet Storage Area Network LUN 17

18 Mobility recreated on server B en0 HYPV HYPV en0 hdisk0 Server A HMC hdisk0 Server B vfscsi0 vhost0 PUblic vhost0 vfscsi0 hdiskx en2 if VASI MSP Logical Memory Copy VASI MSP en2 if hdiskx ent2 SEA ent1 virt ent1 virt ent2 SEA fsc0 ent0 Service processor Private Private Service processor ent0 fsc0 Memory Ethernet Copy over Storage Area Network LUN 18

19 Mobility Migration completion The source Virtual I/O Servers unlock, unconfigure, or undefine virtual resources on the source servers. The HMC removes the hosting virtual adapter slots from the source Virtual I/O Server logical partition profiles as required. Finally, the source LPAR is removed. HYPV HYPV Lpar mig1 System B en0 System A hdisk0 HMC vhost0 vfscsi0 hdiskx fsc0 en2 if ent2 SEA ent0 VASI MSP ent1 virt Service processor Private PUblic Private Service processor VASI MSP ent1 virt en2 if ent2 SEA ent0 hdiskx fsc0 Ethernet Storage Area Network LUN 19

20 Target Is Different From Source number is different Server serial number is different Maximum number of potential (hot-pluggable) and installed physical processors may be different The model class may be different (high-end vs. low-end system) Same partition name Same logical partition configuration min, online, and max logical CPUs min, online, and max logical memory min, actual, and max entitled capacity Same logical device configuration Same IP addresses Same vscsi setup to access disk 20

21 Mobility Dual VIO Dual VIO Server Dual Virtual I/O Server and client mirroring may be used if you have two independent storage subsystems providing disk space Dual Virtual I/O Server and multipath I/O only if the destination system is configured with two Virtual I/O Servers that can provide the same multipath setup * Important Planning Note: All user-defined virtual devices must have a Virtual Slot number higher than 10. This will be enforced by the HMC code. 21

22 Dynamic Heterogeneous Multi-Path I/O Delivers flexibility for Live Mobility environments Provides efficient path redundancy to SAN resources Supported between virtual NPIV and physical Fibre Channel Adapters AIX 5.3 and 6.1 partitions POWER6 processor-based servers VIOS VIOS FC Adapter Virtual FC Adapter FC Adapter FC Adapter Virtual FC Adapter FC Adapter NPIV Power Hypervisor NPIV Power Hypervisor 1) Real adapter 3) moves via virtual adapter 4) Real adapter 2) Virtual adapter to prepare for mobility 22

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