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Parameter Name Description Type
VCPUs-params configuration parameters for
the selected VCPU policy.
You can tune a VCPU's
pinning with
xe vm-param-set \
uuid=<vm_uuid> \
VCPUs-params:mask=1,2,3
A VM created from this
template will then run on
physical CPUs 1, 2, and 3
only.
You can also tune the VCPU
priority (xen scheduling)
with the cap and weight
parameters; for example
xe vm-param-set \
uuid=<vm_uuid> \
VCPUs-params:weight=512
xe vm-param-set \
uuid=<vm_uuid> \
VCPUs-params:cap=100
A VM based on this template
with a weight of 512 will get
twice as much CPU as a
domain with a weight of 256
on a contended XenServer
host. Legal weights range
from 1 to 65535 and the
default is 256.
The cap optionally fixes the
maximum amount of CPU a
VM based on this template
will be able to consume, even
if the XenServer host has
idle CPU cycles. The cap is
expressed in percentage of
one physical CPU: 100 is 1
physical CPU, 50 is half a
CPU, 400 is 4 CPUs, etc. The
default, 0, means there is no
upper cap.
read/write map parameter
VCPUs-max maximum number of VCPUs read/write
VCPUs-at-startup boot number of VCPUs read/write
- Published June 2010 1
- 1.1 Edition 1
- Table of Contents 3
- Document Overview 21
- Managing users 22
- Upgrading from XenServer 5.5 23
- User authentication 25
- Removing access for a user 26
- Leaving an AD domain 26
- Role Based Access Control 27
- RBAC process 28
- Definitions of permissions 30
- To add a subject to RBAC 36
- Auditing 37
- Creating a resource pool 40
- Adding shared storage 41
- High Availability 43
- Configuration Requirements 44
- Restart priorities 44
- Enabling HA using the CLI 45
- Host Power On 47
- Key/Value Pairs 48
- Sample Script 49
- Storage Overview 50
- Virtual Block Devices (VBDs) 51
- Summary of Storage objects 51
- Virtual Disk Data Formats 51
- VHD-based VDIs 52
- Storage configuration 53
- VDI types 54
- Probing an SR 55
- Storage Multipathing 58
- Storage Repository Types 59
- Local LVM 60
- Local EXT3 VHD 60
- EqualLogic 61
- Creating a VDI using the CLI 63
- FlexVols 64
- Aggregates 64
- Thick or thin provisioning 65
- FAS Deduplication 65
- Access Control 65
- Licenses 65
- Further information 65
- Software iSCSI Support 67
- Sample QLogic iSCSI HBA setup 68
- LVM over iSCSI 69
- LVM over hardware HBA 73
- To create a CSLG SR 76
- Managing Storage Repositories 78
- Destroying or forgetting a SR 79
- Introducing an SR 79
- Resizing an SR 80
- Virtual disk QoS settings 81
- Configuring VM memory 83
- The concept of static range 84
- DMC Behaviour 84
- How does DMC Work? 84
- Memory constraints 85
- Supported operating systems 85
- Updating memory properties 87
- Upgrade issues 88
- Networking 89
- Network objects 90
- Networks 90
- NIC bonds 91
- Creating VLANs 93
- Bonding two NICs together 94
- Reverting NIC bonds 95
- Hostname 100
- DNS servers 100
- Management interface 101
- Disabling management access 101
- Adding a new physical NIC 102
- Verifying NIC ordering 102
- Re-ordering NICs 102
- Networking Troubleshooting 103
- Workload Balancing 105
- Workload Balancing Overview 106
- Supported XenServer Versions 108
- Supported Operating Systems 108
- Recommended Hardware 108
- Installing Workload Balancing 111
- Configuring Firewalls 114
- Upgrading Workload Balancing 114
- Upgrading SQL Server 115
- Scheduled 119
- Tuning Metric Weightings 124
- VM Optimization Criteria 126
- Disabling Workload Balancing 131
- Introduction 134
- Report Generation Features 137
- Toolbar Buttons 137
- Host Health History 138
- Pool Audit Log History 139
- Pool Health 140
- Pool Health History 141
- Pool Optimization History 141
- Backup and recovery 143
- VM Snapshots 146
- Regular Snapshots 147
- Quiesced Snapshots 147
- Snapshots with memory 147
- Creating a VM Snapshot 147
- Deleting a snapshot 149
- Snapshot Templates 150
- Coping with machine failures 153
- Pool failures 154
- Physical Machine failure 154
- Customizing Alerts 157
- Configuring Email Alerts 158
- Custom Fields and Tags 159
- Custom Searches 159
- Troubleshooting 160
- XenCenter logs 161
- Basic xe syntax 162
- Special characters and syntax 163
- Command types 164
- Parameter types 165
- Low-level param commands 165
- Low-level list commands 166
- Bonding commands 167
- CD commands 168
- Console commands 169
- Event commands 170
- Host selectors 171
- Host parameters 171
- Log commands 181
- Message commands 182
- Network commands 183
- Patch (update) commands 184
- PBD commands 185
- PIF commands 186
- PIF parameters 187
- Pool commands 190
- Storage Manager commands 193
- SR commands 194
- Task commands 196
- Template commands 197
- Template parameters 198
- Update commands 205
- User commands 205
- VBD commands 206
- VDI commands 208
- VDI parameters 209
- VIF commands 212
- 213
- VLAN commands 215
- VM commands 215
- Workload Balancing commands 230
- <-5> \ 232
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