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emellor@leeni.uk.xensource.com
bc8ed50e6c
entries in vif to guide the configuration. This is much less confusing. Closes bug #440. Change the example configuration files to match. Also change them to use the XenSource OUI in the MAC addresses. Also change xm-test to match. Remove the obsolete ipaddr configuration entry, and the backend_mac vif config option. Remove the preprocess_vifs function, folding it into the configure_vifs function, and creating a simple comma_sep_kv_to_dict helper. Remove the configure_vfr method, as it is unused. Signed-off-by: Ewan Mellor <ewan@xensource.com>
177 lines
6.2 KiB
Python
177 lines
6.2 KiB
Python
# -*- mode: python; -*-
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#============================================================================
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# Example Python setup script 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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#
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# This is a relatively advanced script that uses a parameter, vmid, to control
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# the settings. So this script can be used to start a set of domains by
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# setting the vmid parameter on the 'xm create' command line. For example:
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#
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# xm create vmid=1
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# xm create vmid=2
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# xm create vmid=3
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#
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# The vmid is purely a script variable, and has no effect on the the domain
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# id assigned to the new domain.
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#============================================================================
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# Define script variables here.
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# xm_vars is defined automatically, use xm_vars.var() to define a variable.
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# This function checks that 'vmid' has been given a valid value.
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# It is called automatically by 'xm create'.
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def vmid_check(var, val):
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val = int(val)
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if val <= 0:
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raise ValueError
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return val
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# Define the 'vmid' variable so that 'xm create' knows about it.
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xm_vars.var('vmid',
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use="Virtual machine id. Integer greater than 0.",
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check=vmid_check)
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# Check the defined variables have valid values..
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xm_vars.check()
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#----------------------------------------------------------------------------
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# Kernel image file.
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kernel = "/boot/vmlinuz-2.6.10-xenU"
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# Optional ramdisk.
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#ramdisk = "/boot/initrd.gz"
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# The domain build function. Default is 'linux'.
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#builder='linux'
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# Initial memory allocation (in megabytes) for the new domain.
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memory = 64
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# A name for the new domain. All domains have to have different names,
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# so we use the vmid to create a name.
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name = "VM%d" % vmid
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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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#cpus = "%s" % vmid # set based on vmid (mod number of CPUs)
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# Number of Virtual CPUS to use, default is 1
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#vcpus = 1
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vcpus = 4 # make your domain a 4-way
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#----------------------------------------------------------------------------
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# Define network interfaces.
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# By default, no network interfaces are configured. You may have one created
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# with sensible defaults using an empty vif clause:
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#
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# vif = [ '' ]
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#
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# or optionally override backend, bridge, ip, mac, script, type, or vifname:
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#
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# vif = [ 'mac=00:16:3e:00:00:11, bridge=xenbr0' ]
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#
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# or more than one interface may be configured:
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#
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# vif = [ '', 'bridge=xenbr1' ]
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vif = [ '' ]
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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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# This makes the disk device depend on the vmid - assuming
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# that devices sda7, sda8 etc. exist. The device is exported
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# to all domains as sda1.
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# All domains get sda6 read-only (to use for /usr, see below).
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disk = [ 'phy:sda%d,sda1,w' % (7+vmid),
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'phy:sda6,sda6,r' ]
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#----------------------------------------------------------------------------
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# Define to which TPM instance the user domain should communicate.
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# The vtpm entry is of the form 'instance=INSTANCE,backend=DOM'
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# where INSTANCE indicates the instance number of the TPM the VM
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# should be talking to and DOM provides the domain where the backend
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# is located.
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# Note that no two virtual machines should try to connect to the same
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# TPM instance. The handling of all TPM instances does require
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# some management effort in so far that VM configration files (and thus
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# a VM) should be associated with a TPM instance throughout the lifetime
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# of the VM / VM configuration file. The instance number must be
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# greater or equal to 1.
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#vtpm = ['instance=%d,backend=0' % (vmid) ]
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#----------------------------------------------------------------------------
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# Set the kernel command line for the new domain.
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# You only need to define the IP parameters and hostname if the domain's
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# IP config doesn't, e.g. in ifcfg-eth0 or via DHCP.
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# You can use 'extra' to set the runlevel and custom environment
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# variables used by custom rc scripts (e.g. VMID=, usr= ).
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# Set if you want dhcp to allocate the IP address.
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#dhcp="dhcp"
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# Set netmask.
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#netmask=
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# Set default gateway.
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#gateway=
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# Set the hostname.
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#hostname= "vm%d" % vmid
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# Set root device.
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root = "/dev/sda1 ro"
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# Root device for nfs.
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#root = "/dev/nfs"
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# The nfs server.
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#nfs_server = '169.254.1.0'
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# Root directory on the nfs server.
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#nfs_root = '/full/path/to/root/directory'
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# Sets runlevel 4 and the device for /usr.
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extra = "4 VMID=%d usr=/dev/sda6" % vmid
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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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