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iap10@labyrinth.cl.cam.ac.uk
64a240698b
domain_create allows CPU to be specified. defaults file binds domain to CPU (vmid % num_cpus).
97 lines
3.1 KiB
Plaintext
97 lines
3.1 KiB
Plaintext
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##### Edit this python file to reflect the configuration of your system
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##### This example script expects a variable called 'vmid' to be set.
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def config_usage ():
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print >>sys.stderr,"""
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The config file '%s' requires the following variable to be defined:
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vmid -- Numeric identifier for the new domain, used to calculate
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the VM's IP address and root partition. E.g. -Dvmid=1
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""" % config_file
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try:
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vmid=int(vmid) # convert to integer
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except:
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print >>sys.stderr,"%s: This script expects 'vmid' to be set using -D vmid=X" % config_file
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assert()
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if vmid == 0:
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print >>sys.stderr,"%s: 'vmid' must be greater than 0" % config_file
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assert()
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# STEP 1. Specify kernel image file and otional ramdisk. Can be gzip'ed.
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image = "../../../install/boot/xenolinux.gz"
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ramdisk = ""
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#ramdisk = "/boot/initrd.gz"
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builder_fn='linux' # this is a linux domain
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# STEP 2. The initial memory allocation (in megabytes) for the new domain.
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mem_size = 64
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# STEP 3. A handy name for your new domain.
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domain_name = "This is VM %d" % vmid
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# STEP 4. Which CPU to start domain on?
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#cpu = -1 # leave to Xen to pick
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cpu = vmid # set based on vmid (mod number of CPUs)
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# STEP 5. Specify IP address(es), for the new domain. You need to
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# configure IP addrs within the domain just as you do normally. This
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# is just to let Xen know about them so it can route packets
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# appropriately.
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#vfr_ipaddr = ["111.222.333.444","222.333.444.555"]
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vfr_ipaddr = [xenctl.utils.add_offset_to_ip(xenctl.utils.get_current_ipaddr(),vmid),
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xenctl.utils.add_offset_to_ip('169.254.1.0',vmid),]
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# STEP 6. Identify any physcial partitions or virtual disks you want the
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# domain to have access to, and what you want them accessible as
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# e.g. vbd_list = [ ('phy:sda1','sda1', 'w'),
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# ('phy:sda%d' % (3+vmid), 'hda2', 'r'),
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# ('vd:as73gd784dh','hda1','w'),
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# ('phy:cdrom','hdd','r')
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vbd_list = [ ('phy:sda%d'%(7+vmid),'sda1','w' ),
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('phy:sda6','sda6','r') ]
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# STEP 5b. Set the VBD expertise level. Most people should leave this
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# on 0, at least to begin with - this script can detect most dangerous
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# disk sharing between domains and with this set to zero it will only
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# allow read only sharing.
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vbd_expert = 0
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# STEP 7. Build the command line for the new domain. Edit as req'd.
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# You only need the ip= line if you're NFS booting or the root file system
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# doesn't set it later e.g. in ifcfg-eth0 or via DHCP
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# You can use 'extrabit' 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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netmask = xenctl.utils.get_current_ipmask()
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gateway = xenctl.utils.get_current_ipgw()
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nfsserv = '169.254.1.0'
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cmdline_ip = "ip="+vfr_ipaddr[0]+":"+nfsserv+":"+gateway+":"+netmask+"::eth0:off"
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cmdline_root = "root=/dev/sda1 ro"
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#cmdline_root = "root=/dev/nfs nfsroot=/full/path/to/root/directory"
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cmdline_extra = "4 VMID=%d usr=/dev/sda6" % vmid
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# STEP 8. Set according to whether you want the script to watch the domain
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# and auto-restart it should it die or exit.
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auto_restart = False
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#auto_restart = True
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# STEP 9. (Optional) Define a console port number for the new domain.
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# console_port = 9610+vmid
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