bitkeeper revision 1.638 (3fca7788evQFw3E81lBB0aqsSAxjwA)

Slightly more complicated example script

diff --git a/.rootkeys b/.rootkeys
index fe17b6d2ab31f2b9e1d9202efb1531bdf6e82eee..f5af9fa9213cb6c1d84f7cbed92b9cf854340204 100644 (file)
--- a/.rootkeys
+++ b/.rootkeys
@@ -42,6 +42,7 @@
 3fbe2f12OPAkzIUtumU3wRAihnhocQ tools/examples/createlinuxdom.py
 3fbe2f12dZbmXLlgQdMgkmnSUj23AQ tools/examples/destroydom.py
 3fbe2f12ltvweb13kBSsxqzZDAq4sg tools/examples/listdoms.py
+3fca7788tBihusQSq3HJI-YKQTN2iQ tools/examples/mynewdom.py
 3fca7700PVj36cZObaFZlQicRiw1pQ tools/examples/pincpu.py
 3fbe2f12Bnt8mwmr1ZCP6HWGS6yvYw tools/examples/stopdom.py
 3f776bd2Xd-dUcPKlPN2vG89VGtfvQ tools/misc/Makefile

diff --git a/tools/examples/mynewdom.py b/tools/examples/mynewdom.py
new file mode 100755 (executable)
index 0000000..49dba2d
--- /dev/null
+++ b/tools/examples/mynewdom.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+
+#
+# Example script for creating and building a new Linux guest OS for Xen.
+#
+
+import Xc, XenoUtil, sys, os, socket, re
+
+# Variable declaration. Set these up properly later on, as needed.
+nfsserv = nfspath = root_partn = usr_partn = ""
+shost = re.search( '([a-zA-Z]+)[-.]', socket.gethostname() ).group(1)
+
+# STEP 1. Specify kernel image file.
+image = "/usr/groups/srgboot/%s/xenolinux.gz" % shost
+
+# STEP 2. How many megabytes of memory for the new domain?
+memory_megabytes = 64
+
+# STEP 3. A handy name for your new domain.
+domain_name = "My new domain"
+
+# Allocate new domain
+xc = Xc.new()
+id = xc.domain_create( mem_kb=memory_megabytes*1024, name=domain_name )
+if id <= 0:
+    print "Error creating domain"
+    sys.exit()
+
+# Set the CPU, or leave to round robin
+#xc.domain_pincpu( dom=id, cpu=1 )
+
+# STEP 4. Specify IP address, netmask and gateway for the new domain.
+ipaddr  = XenoUtil.add_to_ip(XenoUtil.addr_of_iface('eth0'),id)
+netmask = XenoUtil.get_current_ipmask()
+gateway = XenoUtil.get_current_ipgw()
+
+# STEP 5a. Specify NFS server and path to rootfs (only needed for network boot)
+#nfsserv = "ADDRESS"
+#nfspath = "FULL_PATH_TO_ROOT_DIR"
+
+# STEP 5b. Specify root partition on local disc (if not NFS booting)
+root_partn = "/dev/sda%d" % (7+id)
+# (NB. The following is only needed for a separate shared read-only /usr)
+usr_partn  = "/dev/sda6"
+
+# STEP 6. Check that the following cmdline setup is to your taste.
+cmdline = "ip="+ipaddr+":"+nfsserv+":"+gateway+":"+netmask+"::eth0:off"
+if root_partn:
+    # Boot from local disc. May specify a separate /usr.
+    cmdline = cmdline + " root="+root_partn+" ro"
+    if usr_partn:
+        " usr="+usr_partn
+elif nfsserv:
+    # NFS boot
+    cmdline = cmdline + " root=/dev/nfs"
+    cmdline = cmdline + " nfsroot="+nfspath
+
+if root_partn:
+    root_info = XenoUtil.lookup_blkdev_partn_info(root_partn)
+    if not root_info:
+        print "Could not obtain info on partition '" + root_partn + "'"
+        sys.exit()
+
+if usr_partn:
+    usr_info = XenoUtil.lookup_blkdev_partn_info(usr_partn)
+    if not usr_info:
+        print "Could not obtain info on partition '" + usr_partn + "'"
+        sys.exit()
+
+if not os.path.isfile( image ):
+    print "Image file '" + image + "' does not exist"
+    sys.exit()
+
+
+if xc.linux_build( dom=id, image=image, cmdline=cmdline ):
+    print "Error building Linux guest OS"
+    xc.domain_destroy ( dom=id )
+    sys.exit()
+
+if root_partn:
+    if xc.vbd_create( dom=id, vbd=root_info[0], writeable=1 ):
+        print "Error creating root VBD"
+        xc.domain_destroy ( dom=id )
+        sys.exit()
+    if xc.vbd_add_extent( dom=id,
+                          vbd=root_info[0],
+                          device=root_info[1],
+                          start_sector=root_info[2],
+                          nr_sectors=root_info[3] ):
+        print "Error populating root VBD"
+        xc.domain_destroy ( dom=id )
+        sys.exit()
+
+if usr_partn:
+    if xc.vbd_create( dom=id, vbd=usr_info[0], writeable=0 ):
+        print "Error creating usr VBD"
+        xc.domain_destroy ( dom=id )
+        sys.exit()
+    if xc.vbd_add_extent( dom=id,
+                          vbd=usr_info[0],
+                          device=usr_info[1],
+                          start_sector=usr_info[2],
+                          nr_sectors=usr_info[3] ):
+        print "Error populating usr VBD"
+        xc.domain_destroy ( dom=id )
+        sys.exit()
+
+XenoUtil.setup_vfr_rules_for_vif( id, 0, ipaddr )
+
+if xc.domain_start( dom=id ):
+    print "Error starting domain"
+    xc.domain_destroy ( dom=id )
+    sys.exit()