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by Scott Vetter, José Ricardo Ziviani, Stephen Lutz, Breno Leitao, Murilo Opsfelder
IBM PowerKVM: Configuration and Use
Front cover
Figures
Tables
Examples
Notices
Trademarks
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Preface
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Summary of changes
March 2016, Second Edition
Chapter 1. Introduction
1.1 IBM Power Systems
1.1.1 POWER8 processors
1.1.2 IBM scale-out servers
1.1.3 Power virtualization
1.1.4 Simultaneous multithreading
1.1.5 Memory architecture
1.1.6 Micro-Threading
1.1.7 RAS features
1.2 Virtualization
1.2.1 PowerKVM versions
1.2.2 PowerKVM Version 3.1 considerations
1.2.3 Where to download PowerKVM
1.3 Software stack
1.3.1 QEMU
1.3.2 KVM
1.3.3 Open Power Abstraction Layer
1.3.4 Guest operating system
1.3.5 Libvirt software
1.3.6 Virsh interface
1.3.7 Intelligent Platform Management Interface
1.3.8 Petitboot
1.3.9 Kimchi
1.3.10 Slimline Open Firmware
1.3.11 Virtio drivers
1.3.12 RAS stack
1.4 Docker
1.4.1 Architecture
1.4.2 Docker hub
1.4.3 Docker file
1.5 Comparisons of PowerVM and PowerKVM
1.5.1 PowerVM and PowerKVM features
1.5.2 PowerKVM Version 2.1 and Version 3.1
1.6 Terminology
Chapter 2. Host installation and configuration
2.1 Host installation
2.2 Boot over network
2.2.1 Retrieve configuration from URL
2.2.2 Boot LiveDVD over network
2.2.3 Automated boot over DHCP
2.2.4 Automated installation
2.3 Install over existing IBM PowerKVM and host migration
2.4 Configuration
2.4.1 Console configuration for Scale-out Power Systems
2.4.2 Console configuration for Power LC systems
Chapter 3. Managing hosts and guests from a Web interface
3.1 Kimchi
3.1.1 Accessing Kimchi
3.1.2 Getting help
3.2 Host tab
3.3 Storage pool
3.3.1 Local directory
3.3.2 NFS
3.3.3 iSCSI
3.3.4 Logical volume
3.4 Network
3.4.1 NAT network
3.4.2 Bridged network
3.4.3 Isolated network
3.5 Templates
3.5.1 Create a new template
3.5.2 Edit an existing template
3.5.3 Create a template from an existing disk image
3.6 Guests
3.6.1 Create a new guest
3.6.2 Guest management
3.7 Accessing a graphical interface
3.7.1 noVNC
3.7.2 VNC
3.7.3 Custom keyboard layouts in Kimchi noVNC
3.8 Ginger
Chapter 4. Managing guests from the command-line interface
4.1 virsh console
4.1.1 virsh vncdisplay
4.2 Managing storage pools
4.2.1 Create new storage pools
4.2.2 Query available storage pools
4.2.3 List available volumes
4.2.4 Create a new volume
4.2.5 Delete or wipe a volume
4.2.6 Snapshots
4.3 Manage guest networks
4.3.1 Query guest networks
4.3.2 Create a guest network
4.4 Managing guests
4.4.1 Create a new guest
4.4.2 List guests
4.4.3 Start or stop a guest
4.4.4 Suspending and resuming
4.4.5 Delete a guest
4.4.6 Connect to a guest
4.4.7 Edit a guest
4.4.8 Add new storage to an existing guest
4.4.9 Add a new network to an existing guest
4.4.10 PCI I/O pass-through
4.4.11 CPU Hotplug
4.4.12 Memory Hotplug
4.4.13 Clone a guest
4.4.14 Migration
Chapter 5. Processor and memory virtualization
5.1 CPU virtualization
5.1.1 Types of virtualization
5.2 CPU overcommitment
5.3 CPU configuration
5.3.1 CPU compatibility mode
5.3.2 Simultaneous multithreading
5.3.3 Micro-Threading
5.3.4 Configuring NUMA
5.3.5 CPU pinning
5.3.6 CPU shares
5.4 CPU Hotplug
5.4.1 CPU Hotplug with a NUMA configuration
5.4.2 Considerations for CPU Hotplug
5.5 Memory
5.5.1 Memory allocation
5.5.2 Memory ballooning
5.5.3 Kernel SamePage Merging
5.5.4 Huge pages
5.5.5 Restrict NUMA memory allocation
5.6 Memory Hotplug
Chapter 6. I/O virtualization
6.1 Types of virtualization
6.1.1 PowerKVM supported devices
6.1.2 PCI I/O pass-through
6.2 Network virtualization
6.2.1 User mode networking
6.2.2 Network address translation networking
6.2.3 Bridged networking
6.2.4 Open vSwitch
6.3 Storage pools
6.3.1 Storage volume
6.3.2 Block device pools
6.3.3 File-backed pools
6.4 I/O pass-through
6.4.1 SCSI pass-through
6.4.2 USB pass-through
6.4.3 PCI pass-through to a virtual machine
6.4.4 I/O limits
6.5 N_Port ID Virtualization (NPIV)
6.6 Using multipath disks
6.6.1 Multipath disk handling
6.6.2 Direct mapped multipath disks
6.6.3 Multipath disks in a storage pool
6.7 Hot plug
6.7.1 Adding a new vSCSI adapter
Chapter 7. Advanced topics
7.1 Install PowerKVM on a hardware RAID
7.2 Guest migration
7.2.1 Offline migration
7.2.2 Online migration
7.2.3 Live migration
7.3 Booting PowerKVM from Petitboot shell
7.4 Security
7.4.1 SELinux
7.4.2 System updates
7.5 Cloud management
7.5.1 IBM PowerVC
7.5.2 IBM Cloud Manager with OpenStack
7.5.3 OpenStack controller services
7.6 Docker usage
7.6.1 Docker installation
7.6.2 Image management
7.6.3 Container management
7.6.4 Uploading your image to Docker hub
7.6.5 Creating image from scratch
Chapter 8. PowerKVM Development Kit
8.1 Introduction
8.1.1 Libvirt API
8.2 Installation
8.3 Architecture
8.4 Initial example
8.4.1 Using Python binding
8.4.2 Using the API in C
8.5 Query memory and CPU utilization example
8.6 Query guest network information
Related publications
IBM Redbooks
Online resources
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Prev
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Note: Before using this information and the product it supports, read the information in “Notices” on page xvii.
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Tables
Figures
1-1 12-core IBM POWER8 architecture 2
1-2 Front view of the Power S812L 3
1-3 Front view of the Power S822L 4
1-4 S821L and S822L rear view 4
1-5 S824L front view 5
1-6 S824L rear view 5
1-7 NVIDA Tesla adapter 6
1-8 Front view of the Power S822LC 6
1-9 Front view of the Power S812LC 7
1-10 Local and remote memory access in a NUMA architecture 9
1-11 IBM POWER8 core with Micro-Threading enabled 10
1-12 Guests and hypervisor 11
1-13 QEMU monitor window example 13
1-14 Virsh and libvirt architecture 16
1-15 Petitboot window 17
1-16
Kimchi home panel 18
1-17 SLOF during VM boot 19
1-18 Virtio architecture for network stack 20
1-19 Namespaces example 22
1-20 Change root feature 23
1-21 Containers and virtual images on a POWER server 24
1-22 Container and guest OS stack 25
1-23 Build and run process 26
2-1 Petitboot menu 33
2-2 Petitboot system configuration 34
2-3 Language selection 34
2-4 Welcome to IBM PowerKVM 35
2-5 Select the target device to install PowerKVM 36
2-6 Change the name of the volume group and the size of the volumes if needed 36
2-7 Root password 37
2-8 Time zone selection 37
2-9 NTP configuration 38
2-10 Date and time configuration 38
2-11 Configure network 39
2-12 Network device configuration 39
2-13 DNS configuration 40
2-14 Installation summary 40
2-15 Device confirmation 41
2-16 Installer progress bar 41
2-17 Reboot the system 42
2-18 PowerKVM is automatically loaded from the installed device after reboot 42
2-19 Petitboot Retrieve config from URL entry 44
2-20 Petitboot Config Retrieval window 44
2-21 Petitboot configuration retrieved 45
2-22 Install over existing IBM PowerKVM option displayed in the installer menu 53
2-23 Select existing installation window 54
2-24 The ibm-configure-system tool 55
2-25 Reset password 56
2-26 Timezone selection 56
2-27 Select network device 57
2-28 Network device configuration 57
2-29 DNS configuration change 58
2-30 Select firmware configuration 58
2-31 Changing the IPMI password 59
3-1 Login panel 63
3-2 Accessing help 63
3-3 Host tab selected 63
3-4 Host tab information 64
3-5 Host system statistics 65
3-6 Package update and repository manager 65
3-7 Adding a new repository 66
3-8 Generating a new SOS Report 66
3-9 Generating a new SOS Report 67
3-10 List of reports created 67
3-11 Storage tab 68
3-12 Local directory storage pool 69
3-13 Activating a new storage pool 70
3-14 NFS storage pool 71
3-15 iSCSI storage pool 72
3-16 iSCSI volumes list 73
3-17 Creating a template using an iSCSI volume 73
3-18 LVM storage pool 74
3-19 LVM storage pool 75
3-20 Network tab 75
3-21 Starting a network 76
3-22 Creating a new NAT network 77
3-23 Creating a bridged network 78
3-24 Creating an isolated network 79
3-25 Template tab 80
3-26 Selecting the Local ISO Image 80
3-27 Selecting the operating system 80
3-28 Editing a template 81
3-29 Template editor 81
3-30 Storage tab in the template editor 82
3-31 Network tab in the template editor 83
3-32 Processor tab in template editor 83
3-33 Editing CPU topology in template editor 84
3-34 Selecting the local image file 84
3-35 Image disk file path 85
3-36 The guest tab 85
3-37 Creating a new virtual machine 86
3-38 Guest control buttons for stopped guest 87
3-39 Edit a stopped guest 87
3-40 Storage tab interface 88
3-41 Attach an existing volume 88
3-42 Interface tab 89
3-43 Adding a network 89
3-44 Permission tab 90
3-45 Host PCI device tab 90
3-46 Snapshot tab 91
3-47 Guest control buttons for a running guest 91
3-48 Attach a storage to a running guest 92
3-49 Adding a new network interface 93
3-50 List of PCI devices 94
3-51 List of PCI devices 95
3-52 Administration tab 97
3-53 Firmware update tool 97
3-54 Selecting an image from IBM Fix Central 98
3-55 Ginger configuration backup tool 98
3-56 Creating a custom backup 99
3-57 Removing old backups 99
3-58 Network configuration tool 100
3-59 Power Options tool 100
3-60 Changing a profile 100
3-61 Listing SAN adapters connected to the system 101
3-62 Sensor monitor 101
3-63 Starting SEP service 101
3-64 Subscribing a new listener 102
3-65 SEP configuration pane 102
3-66 Listing existing users on the host 102
3-67 Adding a new user 103
4-1 Deleting a snapshot 113
4-2 Interaction between host and guest during PCI hotplug 125
5-1 CPU overcommitment scenario 131
5-2 Example of a POWER8 core with four subcores and two threads each subcore 137
5-3 Four virtual machines running in a single core without Micro-Threading enabled 137
5-4 Four virtual machines running in a single core with Micro-Threading enabled 138
5-5 KSM mapping when VM uses the same page 153
6-1 Bridge architecture 166
6-2 File-backed pool 168
6-3 iSCSI-backed storage pool 169
6-4 NFS-backed storage device 169
6-5 Fibre Channel-backed storage device 170
6-6 Virtual Fibre Channel adapters in Kimchi 178
6-7 Typical multipath environment 182
6-8 IBM Storwize V7000 storage view of LUNs attached to PowerKVM 183
6-9 Added multipath disk in Kimchi 187
7-1
iprconfig
main window 194
7-2 Create a disk array option 195
7-3 Select disk adapter 195
7-4 Select disk units 196
7-5 Select RAID type 196
7-6 Confirmation window for creating disk array 197
7-7 Disk array status 197
7-8 PowerVC interface for advanced virtualization management 205
7-9 Adding a new host to PowerVC 205
7-10 Hosts list on PowerVC 206
7-11 Image upload on PowerVC 207
7-12 Displaying images 208
7-13 Deploy an image on PowerVC 208
7-14 Attachment of an iSCSI disk in PowerVC 209
7-15 IBM Cloud Manager with OpenStack Self Service portal 211
8-1 virConnect structure 233
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