--- /dev/null
+import string
+
+from Exceptions import *
+import utils
+import compatibility
+from systeminfo import systeminfo
+import BootAPI
+
+
+def Run( vars, log ):
+ """
+ Load the kernel off of a node and boot to it.
+ This step assumes the disks are mounted on SYSIMG_PATH.
+
+ Expect the following variables:
+ BOOT_CD_VERSION A tuple of the current bootcd version
+ SYSIMG_PATH the path where the system image will be mounted
+ (always starts with TEMP_PATH)
+ ROOT_MOUNTED the node root file system is mounted
+
+ Sets the following variables:
+ ROOT_MOUNTED the node root file system is mounted
+ """
+
+ log.write( "\n\nStep: Chain booting node.\n" )
+
+ # make sure we have the variables we need
+ try:
+ BOOT_CD_VERSION= vars["BOOT_CD_VERSION"]
+ if BOOT_CD_VERSION == "":
+ raise ValueError, "BOOT_CD_VERSION"
+
+ SYSIMG_PATH= vars["SYSIMG_PATH"]
+ if SYSIMG_PATH == "":
+ raise ValueError, "SYSIMG_PATH"
+
+ except KeyError, var:
+ raise BootManagerException, "Missing variable in vars: %s\n" % var
+ except ValueError, var:
+ raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+ ROOT_MOUNTED= 0
+ if 'ROOT_MOUNTED' in vars.keys():
+ ROOT_MOUNTED= vars['ROOT_MOUNTED']
+
+ if ROOT_MOUNTED == 0:
+ log.write( "Mounting node partitions\n" )
+
+ # old cds need extra utilities to run lvm
+ if BOOT_CD_VERSION[0] == 2:
+ compatibility.setup_lvm_2x_cd( vars, log )
+
+ # simply creating an instance of this class and listing the system
+ # block devices will make them show up so vgscan can find the planetlab
+ # volume group
+ systeminfo().get_block_device_list()
+
+ utils.sysexec( "vgscan", log )
+ utils.sysexec( "vgchange -ay planetlab", log )
+
+ utils.makedirs( SYSIMG_PATH )
+
+ utils.sysexec( "mount /dev/planetlab/root %s" % SYSIMG_PATH, log )
+ utils.sysexec( "mount /dev/planetlab/vservers %s/vservers" %
+ SYSIMG_PATH, log )
+
+ ROOT_MOUNTED= 1
+ vars['ROOT_MOUNTED']= 1
+
+
+ node_update_cmd= "/usr/local/planetlab/bin/NodeUpdate.py start noreboot"
+
+ log.write( "Running node update.\n" )
+ utils.sysexec( "chroot %s %s" % (SYSIMG_PATH,node_update_cmd), log )
+
+ log.write( "Updating ssh public host key with PLC.\n" )
+ ssh_host_key= ""
+ try:
+ ssh_host_key_file= file("%s/etc/ssh/ssh_host_rsa_key.pub"%SYSIMG_PATH,"r")
+ ssh_host_key= ssh_host_key_file.read().strip()
+ ssh_host_key_file.close()
+ ssh_host_key_file= None
+ except IOError, e:
+ pass
+
+ update_vals= {}
+ update_vals['ssh_host_key']= ssh_host_key
+ BootAPI.call_api_function( vars, "BootUpdateNode", (update_vals,) )
+
+
+ log.write( "Copying kernel and initrd for booting.\n" )
+ utils.sysexec( "cp %s/boot/kernel-boot /tmp/kernel" % SYSIMG_PATH, log )
+ utils.sysexec( "cp %s/boot/initrd-boot /tmp/initrd" % SYSIMG_PATH, log )
+
+ log.write( "Unmounting disks.\n" )
+ utils.sysexec_noerr( "chroot %s umount /rcfs" % SYSIMG_PATH, log )
+ utils.sysexec_noerr( "umount -r /dev/planetlab/vservers", log )
+ utils.sysexec_noerr( "umount -r /dev/planetlab/root", log )
+ utils.sysexec_noerr( "vgchange -an", log )
+
+ ROOT_MOUNTED= 0
+ vars['ROOT_MOUNTED']= 0
+
+ if BOOT_CD_VERSION[0] == 2:
+ log.write( "Unloading modules and chaining booting to new kernel.\n" )
+ else:
+ log.write( "Chaining booting to new kernel.\n" )
+
+ # further use of log after Upload will only output to screen
+ log.Upload()
+
+ # on 2.x cds (2.4 kernel) for sure, we need to shutdown everything to
+ # get kexec to work correctly
+
+ utils.sysexec_noerr( "ifconfig eth0 down", log )
+
+ if BOOT_CD_VERSION[0] == 2:
+ utils.sysexec_noerr( "killall dhcpcd", log )
+ elif BOOT_CD_VERSION[0] == 3:
+ utils.sysexec_noerr( "killall dhclient", log )
+
+ utils.sysexec_noerr( "umount -a -r -t ext2,ext3", log )
+ utils.sysexec_noerr( "modprobe -r lvm-mod", log )
+
+ try:
+ modules= file("/tmp/loadedmodules","r")
+
+ for line in modules:
+ module= string.strip(line)
+ if module != "":
+ utils.sysexec_noerr( "modprobe -r %s" % module, log )
+ except IOError:
+ log.write( "Couldn't load /tmp/loadedmodules to unload, continuing.\n" )
+
+ utils.sysexec( "kexec --force --initrd=/tmp/initrd " \
+ "--append=ramdisk_size=8192 /tmp/kernel" )
+
+ return