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CPUs a domains' vcpus can use. The older 'cpu' config option is prepended to the list of cpus to use and will keep the behavior of pinning VCPU0. The cpus option supports ranges and negation, so: cpus = "0-3,5,^1" produces -> [0,2,3,5] The list is circular, so in a domain with the following config: vcpus = 4 cpus = "0,3,7" # Use any of 0, 3, 7 for this domain. would see vcpus 0-3 pinned to cpus 0,3,7,0 respectively. Also, the pin operation is moved before the memory reservation as vcpu to cpu mapping will be helpful for future NUMA work when trying to allocate pages close to the physical cpus being used. An update to the display of cpumap was needed to normalize the cpumap values to the range of possible cpus. I've also included some text for the xmdomain.cfg(5) man page. Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
149 lines
5.2 KiB
Python
149 lines
5.2 KiB
Python
# -*- mode: python; -*-
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#============================================================================
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# Python configuration setup for 'xm create'.
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# This script sets the parameters used when a domain is created using 'xm create'.
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# You use a separate script for each domain you want to create, or
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# you can set the parameters for the domain on the xm command line.
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#============================================================================
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import os, re
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arch = os.uname()[4]
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if re.search('64', arch):
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arch_libdir = 'lib64'
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else:
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arch_libdir = 'lib'
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#----------------------------------------------------------------------------
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# Kernel image file.
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kernel = "/usr/lib/xen/boot/vmxloader"
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# The domain build function. VMX domain uses 'vmx'.
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builder='vmx'
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# Initial memory allocation (in megabytes) for the new domain.
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memory = 128
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# A name for your domain. All domains must have different names.
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name = "ExampleVMXDomain"
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#-----------------------------------------------------------------------------
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# the number of cpus guest platform has, default=1
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vcpus=1
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# List of which CPUS this domain is allowed to use, default Xen picks
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#cpus = "" # leave to Xen to pick
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#cpus = "0" # all vcpus run on CPU0
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#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
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# Optionally define mac and/or bridge for the network interfaces.
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# Random MACs are assigned if not given.
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# nics default is 1
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#vif = [ 'type=ioemu, mac=aa:00:00:00:00:11, bridge=xenbr0' ]
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nics=1
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# type=ioemu specify the NIC is an ioemu device not netfront
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vif = [ 'type=ioemu, bridge=xenbr0' ]
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#----------------------------------------------------------------------------
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# Define the disk devices you want the domain to have access to, and
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# what you want them accessible as.
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# Each disk entry is of the form phy:UNAME,DEV,MODE
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# where UNAME is the device, DEV is the device name the domain will see,
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# and MODE is r for read-only, w for read-write.
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#disk = [ 'phy:hda1,hda1,r' ]
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disk = [ 'file:/var/images/min-el3-i386.img,ioemu:hda,w' ]
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#----------------------------------------------------------------------------
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# Configure the behaviour when a domain exits. There are three 'reasons'
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# for a domain to stop: poweroff, reboot, and crash. For each of these you
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# may specify:
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#
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# "destroy", meaning that the domain is cleaned up as normal;
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# "restart", meaning that a new domain is started in place of the old
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# one;
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# "preserve", meaning that no clean-up is done until the domain is
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# manually destroyed (using xm destroy, for example); or
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# "rename-restart", meaning that the old domain is not cleaned up, but is
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# renamed and a new domain started in its place.
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#
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# The default is
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#
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# on_poweroff = 'destroy'
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# on_reboot = 'restart'
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# on_crash = 'restart'
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#
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# For backwards compatibility we also support the deprecated option restart
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#
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# restart = 'onreboot' means on_poweroff = 'destroy'
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# on_reboot = 'restart'
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# on_crash = 'destroy'
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#
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# restart = 'always' means on_poweroff = 'restart'
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# on_reboot = 'restart'
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# on_crash = 'restart'
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#
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# restart = 'never' means on_poweroff = 'destroy'
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# on_reboot = 'destroy'
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# on_crash = 'destroy'
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#on_poweroff = 'destroy'
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#on_reboot = 'restart'
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#on_crash = 'restart'
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#============================================================================
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# New stuff
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device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
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#-----------------------------------------------------------------------------
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# Disk image for
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#cdrom=
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#-----------------------------------------------------------------------------
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# boot on floppy (a), hard disk (c) or CD-ROM (d)
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#boot=[a|c|d]
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#-----------------------------------------------------------------------------
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# write to temporary files instead of disk image files
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#snapshot=1
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#----------------------------------------------------------------------------
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# enable SDL library for graphics, default = 0
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sdl=0
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#----------------------------------------------------------------------------
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# enable VNC library for graphics, default = 1
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vnc=1
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#----------------------------------------------------------------------------
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# enable spawning vncviewer(only valid when vnc=1), default = 1
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vncviewer=1
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#----------------------------------------------------------------------------
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# no graphics, use serial port
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#nographic=0
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#-----------------------------------------------------------------------------
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# serial port re-direct to pty deivce, /dev/pts/n
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# then xm console or minicom can connect
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#serial='pty'
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#----------------------------------------------------------------------------
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# enable ne2000, default = 0(use pcnet)
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ne2000=0
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#-----------------------------------------------------------------------------
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# enable audio support
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#enable-audio=1
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#-----------------------------------------------------------------------------
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# set the real time clock to local time [default=0 i.e. set to utc]
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#localtime=1
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#-----------------------------------------------------------------------------
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# start in full screen
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#full-screen=1
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