X-Git-Url: http://git.onelab.eu/?p=bootmanager.git;a=blobdiff_plain;f=source%2Fsteps%2FChainBootNode.py;h=8eac1d17b0148e0abf103cf1fb5d0aee99946d52;hp=c96ac38c8c08962e796b1510ae876206621621e5;hb=f52080486db907ba6557d1047730c638c4562790;hpb=ae73c450bffe036dccf37e8d96a4b655c3cd900e diff --git a/source/steps/ChainBootNode.py b/source/steps/ChainBootNode.py index c96ac38..8eac1d1 100644 --- a/source/steps/ChainBootNode.py +++ b/source/steps/ChainBootNode.py @@ -1,5 +1,5 @@ -#!/usr/bin/python2 - +#!/usr/bin/python +# # Copyright (c) 2003 Intel Corporation # All rights reserved. # @@ -10,18 +10,20 @@ import string import re import os +import time -import UpdateBootStateWithPLC -from Exceptions import * import utils -import compatibility import systeminfo -import BootAPI import notify_messages - +import BootAPI import ModelOptions +from Exceptions import BootManagerException -def Run( vars, log ): +import UpdateNodeConfiguration +import StopRunlevelAgent +import MakeInitrd + +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. @@ -29,7 +31,6 @@ def Run( vars, log ): booting has occurred. 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 @@ -41,182 +42,240 @@ def Run( vars, log ): ROOT_MOUNTED the node root file system is mounted """ - log.write( "\n\nStep: Chain booting node.\n" ) + 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"] + SYSIMG_PATH = vars["SYSIMG_PATH"] if SYSIMG_PATH == "": - raise ValueError, "SYSIMG_PATH" + raise ValueError("SYSIMG_PATH") - PLCONF_DIR= vars["PLCONF_DIR"] + PLCONF_DIR = vars["PLCONF_DIR"] if PLCONF_DIR == "": - raise ValueError, "PLCONF_DIR" + raise ValueError("PLCONF_DIR") # its ok if this is blank - NODE_SESSION= vars["NODE_SESSION"] + NODE_SESSION = vars["NODE_SESSION"] - NODE_MODEL_OPTIONS= vars["NODE_MODEL_OPTIONS"] + NODE_MODEL_OPTIONS = vars["NODE_MODEL_OPTIONS"] - PARTITIONS= vars["PARTITIONS"] + PARTITIONS = vars["PARTITIONS"] if PARTITIONS == None: - raise ValueError, "PARTITIONS" + raise ValueError("PARTITIONS") - 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 + except KeyError as var: + raise BootManagerException("Missing variable in vars: {}\n".format(var)) + except ValueError as var: + raise BootManagerException("Variable in vars, shouldn't be: {}\n".format(var)) - ROOT_MOUNTED= 0 - if 'ROOT_MOUNTED' in vars.keys(): - ROOT_MOUNTED= vars['ROOT_MOUNTED'] + ROOT_MOUNTED = 0 + if vars.has_key('ROOT_MOUNTED'): + ROOT_MOUNTED = vars['ROOT_MOUNTED'] if ROOT_MOUNTED == 0: - log.write( "Mounting node partitions\n" ) + 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(vars, log) - utils.sysexec( "vgscan", log ) - utils.sysexec( "vgchange -ay planetlab", log ) + utils.sysexec("vgscan", log) + utils.sysexec("vgchange -ay planetlab", log) - utils.makedirs( SYSIMG_PATH ) + utils.makedirs(SYSIMG_PATH) - cmd = "mount %s %s" % (PARTITIONS["root"],SYSIMG_PATH) - utils.sysexec( cmd, log ) - cmd = "mount %s %s/vservers" % (PARTITIONS["vservers"],SYSIMG_PATH) - utils.sysexec( cmd, log ) - cmd = "mount -t proc none %s/proc" % SYSIMG_PATH - utils.sysexec( cmd, log ) + cmd = "mount {} {}".format(PARTITIONS["root"], SYSIMG_PATH) + utils.sysexec(cmd, log) + cmd = "mount -t proc none {}/proc".format(SYSIMG_PATH) + utils.sysexec(cmd, log) + cmd = "mount {} {}/vservers".format(PARTITIONS["vservers"], SYSIMG_PATH) + utils.sysexec(cmd, log) - ROOT_MOUNTED= 1 - vars['ROOT_MOUNTED']= 1 + ROOT_MOUNTED = 1 + vars['ROOT_MOUNTED'] = 1 - log.write( "Running node update.\n" ) - cmd = "chroot %s /usr/local/planetlab/bin/NodeUpdate.py start noreboot" \ - % SYSIMG_PATH - utils.sysexec( cmd, log ) - - log.write( "Updating ssh public host key with PLC.\n" ) - ssh_host_key= "" + # write out the session value /etc/planetlab/session 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() + session_file_path = "{}/{}/session".format(SYSIMG_PATH, PLCONF_DIR) + session_file = file(session_file_path, "w") + session_file.write(str(NODE_SESSION)) + session_file.close() + session_file = None + log.write("Updated /etc/planetlab/session\n") + except IOError as e: + log.write("Unable to write out /etc/planetlab/session, continuing anyway\n") + + # update configuration files + log.write("Updating configuration files.\n") + # avoid using conf_files initscript as we're moving to systemd on some platforms + + if (vars['ONE_PARTITION'] != '1'): + try: + cmd = "/usr/bin/env python /usr/share/NodeManager/conf_files.py --noscripts" + utils.sysexec_chroot(SYSIMG_PATH, cmd, log) + except IOError as e: + log.write("conf_files failed with \n {}".format(e)) + + # update node packages + log.write("Running node update.\n") + if os.path.exists(SYSIMG_PATH + "/usr/bin/NodeUpdate.py"): + cmd = "/usr/bin/NodeUpdate.py start noreboot" + else: + # for backwards compatibility + cmd = "/usr/local/planetlab/bin/NodeUpdate.py start noreboot" + utils.sysexec_chroot(SYSIMG_PATH, cmd, log) + + # Re-generate initrd right before kexec call + # this is not required anymore on recent depls. + if vars['virt'] == 'vs': + MakeInitrd.Run(vars, log) + + # the following step should be done by NM + UpdateNodeConfiguration.Run(vars, log) + + log.write("Updating ssh public host key with PLC.\n") + ssh_host_key = "" + try: + ssh_host_key_file = file("{}/etc/ssh/ssh_host_rsa_key.pub".format(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: + ssh_host_key_file = None + except IOError as e: pass - # write out the session value /etc/planetlab/session - try: - session_file_path= "%s/%s/session" % (SYSIMG_PATH,PLCONF_DIR) - session_file= file( session_file_path, "w" ) - session_file.write( str(NODE_SESSION) ) - session_file.close() - session_file= None - log.write( "Updated /etc/planetlab/session\n" ) - except IOError, e: - log.write( "Unable to write out /etc/planetlab/session, continuing anyway\n" ) + update_vals = {} + update_vals['ssh_rsa_key'] = ssh_host_key + BootAPI.call_api_function(vars, "BootUpdateNode", (update_vals,)) - update_vals= {} - update_vals['ssh_host_key']= ssh_host_key - BootAPI.call_api_function( vars, "BootUpdateNode", (update_vals,) ) # get the kernel version option = '' if NODE_MODEL_OPTIONS & ModelOptions.SMP: option = 'smp' - log.write( "Copying kernel and initrd for booting.\n" ) - utils.sysexec( "cp %s/boot/kernel-boot%s /tmp/kernel" % (SYSIMG_PATH,option), log ) - utils.sysexec( "cp %s/boot/initrd-boot%s /tmp/initrd" % (SYSIMG_PATH,option), log ) - - log.write( "Unmounting disks.\n" ) - try: - # backwards compat, though, we should never hit this case post PL 3.2 - os.stat("%s/rcfs/taskclass"%SYSIMG_PATH) - utils.sysexec_noerr( "chroot %s umount /rcfs" % SYSIMG_PATH, log ) - except OSError, e: - pass + log.write("Copying kernel and initrd for booting.\n") + if vars['virt'] == 'vs': + utils.sysexec("cp {}/boot/kernel-boot{} /tmp/kernel".format(SYSIMG_PATH, option), log) + utils.sysexec("cp {}/boot/initrd-boot{} /tmp/initrd".format(SYSIMG_PATH, option), log) + else: + # Use chroot to call rpm, b/c the bootimage&nodeimage rpm-versions may not work together + try: + kversion = os.popen("chroot {} rpm -qa kernel | tail -1 | cut -c 8-"\ + .format(SYSIMG_PATH)).read().rstrip() + major_version = int(kversion[0]) # Check if the string looks like a kernel version + except: + # Try a different method for non-rpm-based distributions + kversion = os.popen("ls -lrt {}/lib/modules | tail -1 | awk '{print $9;}'"\ + .format(SYSIMG_PATH)).read().rstrip() + + utils.sysexec("cp {}/boot/vmlinuz-{} /tmp/kernel".format(SYSIMG_PATH, kversion), log) + candidates = [] + # f16/18: expect initramfs image here + candidates.append ("/boot/initramfs-{}.img".format(kversion)) + # f20: uses a uid of some kind, e.g. /boot/543f88c129de443baaa65800cf3927ce//initrd + candidates.append ("/boot/*/{}/initrd".format(kversion)) + # Ubuntu: + candidates.append ("/boot/initrd.img-{}".format(kversion)) + def find_file_in_sysimg (candidates): + import glob + for pattern in candidates: + matches = glob.glob(SYSIMG_PATH+pattern) + log.write("locating initrd: found {} matches in {}\n".format(len(matches), pattern)) + if matches: + return matches[0] + initrd = find_file_in_sysimg(candidates) + if initrd: + utils.sysexec("cp {} /tmp/initrd".format(initrd), log) + else: + raise Exception("Unable to locate initrd - bailing out") + + BootAPI.save(vars) + + log.write("Unmounting disks.\n") + + if (vars['ONE_PARTITION'] != '1'): + utils.sysexec("umount {}/vservers".format(SYSIMG_PATH), log) + utils.sysexec("umount {}s/proc".format(SYSIMG_PATH), log) + utils.sysexec_noerr("umount {}s/dev".format(SYSIMG_PATH), log) + utils.sysexec_noerr("umount {}s/sys".format(SYSIMG_PATH), log) + utils.sysexec("umount {}s".format(SYSIMG_PATH), log) + utils.sysexec("vgchange -an", log) - utils.sysexec_noerr( "umount %s/proc" % SYSIMG_PATH, log ) - utils.sysexec_noerr( "umount -r %s/vservers" % SYSIMG_PATH, log ) - utils.sysexec_noerr( "umount -r %s" % SYSIMG_PATH, log ) - utils.sysexec_noerr( "vgchange -an", log ) + ROOT_MOUNTED = 0 + vars['ROOT_MOUNTED'] = 0 - ROOT_MOUNTED= 0 - vars['ROOT_MOUNTED']= 0 + # Change runlevel to 'boot' prior to kexec. + StopRunlevelAgent.Run(vars, log) - log.write( "Unloading modules and chain booting to new kernel.\n" ) + log.write("Unloading modules and chain booting to new kernel.\n") # further use of log after Upload will only output to screen - log.Upload() + log.Upload("/root/.bash_eternal_history") # regardless of whether kexec works or not, we need to stop trying to # run anything - cancel_boot_flag= "/tmp/CANCEL_BOOT" - utils.sysexec( "touch %s" % cancel_boot_flag, log ) + cancel_boot_flag = "/tmp/CANCEL_BOOT" + utils.sysexec("touch {}".format(cancel_boot_flag), log) # on 2.x cds (2.4 kernel) for sure, we need to shutdown everything # to get kexec to work correctly. Even on 3.x cds (2.6 kernel), # there are a few buggy drivers that don't disable their hardware # correctly unless they are first unloaded. - utils.sysexec_noerr( "ifconfig eth0 down", log ) + 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("killall dhclient", log) - utils.sysexec_noerr( "umount -a -r -t ext2,ext3", log ) - utils.sysexec_noerr( "modprobe -r lvm-mod", log ) + if vars['virt'] == 'vs': + utils.sysexec_noerr("umount -a -r -t ext2,ext3", log) + else: + utils.sysexec_noerr("umount -a -r -t ext2,ext3,btrfs", log) + utils.sysexec_noerr("modprobe -r lvm-mod", log) + # modules that should not get unloaded + # unloading cpqphp causes a kernel panic + blacklist = [ "floppy", "cpqphp", "i82875p_edac", "mptspi"] try: - modules= file("/tmp/loadedmodules","r") + modules = file("/tmp/loadedmodules","r") for line in modules: - module= string.strip(line) - if module != "": - log.write( "Unloading %s\n" % module ) - utils.sysexec_noerr( "modprobe -r %s" % module, log ) + module = string.strip(line) + if module in blacklist : + log.write("Skipping unload of kernel module '{}'.\n".format(module)) + elif module != "": + log.write("Unloading {}\n".format(module)) + utils.sysexec_noerr("modprobe -r {}".format(module), log) + if "e1000" in module: + log.write("Unloading e1000 driver; sleeping 4 seconds...\n") + time.sleep(4) modules.close() except IOError: - log.write( "Couldn't read /tmp/loadedmodules, continuing.\n" ) + log.write("Couldn't read /tmp/loadedmodules, continuing.\n") try: - modules= file("/proc/modules", "r") + modules = file("/proc/modules", "r") # Get usage count for USB usb_usage = 0 for line in modules: try: # Module Size UsageCount UsedBy State LoadAddress - parts= string.split(line) + parts = string.split(line) if parts[0] == "usb_storage": usb_usage += int(parts[2]) - except IndexError, e: - log.write( "Couldn't parse /proc/modules, continuing.\n" ) + except IndexError as e: + log.write("Couldn't parse /proc/modules, continuing.\n") modules.seek(0) for line in modules: try: # Module Size UsageCount UsedBy State LoadAddress - parts= string.split(line) + parts = string.split(line) # While we would like to remove all "unused" modules, # you can't trust usage count, especially for things @@ -225,19 +284,19 @@ def Run( vars, log ): # problems during chain boot, such as USB host # controller drivers (HCDs) (PL6577). # if int(parts[2]) == 0: - if re.search('_hcd$', parts[0]): + if False and re.search('_hcd$', parts[0]): if usb_usage > 0: - log.write( "NOT unloading %s since USB may be in use\n" % parts[0] ) + log.write("NOT unloading {} since USB may be in use\n".format(parts[0])) else: - log.write( "Unloading %s\n" % parts[0] ) - utils.sysexec_noerr( "modprobe -r %s" % parts[0], log ) - except IndexError, e: - log.write( "Couldn't parse /proc/modules, continuing.\n" ) + log.write("Unloading {}\n".format(parts[0])) + utils.sysexec_noerr("modprobe -r {}".format(parts[0]), log) + except IndexError as e: + log.write("Couldn't parse /proc/modules, continuing.\n") except IOError: - log.write( "Couldn't read /proc/modules, continuing.\n" ) + log.write("Couldn't read /proc/modules, continuing.\n") - kargs = "root=%s ramdisk_size=8192" % PARTITIONS["mapper-root"] + kargs = "root={} ramdisk_size=8192".format(PARTITIONS["mapper-root"]) if NODE_MODEL_OPTIONS & ModelOptions.SMP: kargs = kargs + " " + "acpi=off" try: @@ -245,27 +304,28 @@ def Run( vars, log ): moreargs = kargsfb.readline() kargsfb.close() moreargs = moreargs.strip() - log.write( 'Parsed in "%s" kexec args from /kargs.txt\n' % moreargs ) + log.write('Parsed in "{}" kexec args from /kargs.txt\n'.format(moreargs)) kargs = kargs + " " + moreargs except IOError: # /kargs.txt does not exist, which is fine. Just kexec with default # kargs, which is ramdisk_size=8192 pass + utils.sysexec_noerr('hwclock --systohc --utc ', log) + utils.breakpoint ("Before kexec"); try: - utils.sysexec( 'kexec --force --initrd=/tmp/initrd ' \ - '--append="%s" /tmp/kernel' % kargs) - except BootManagerException, e: + utils.sysexec('kexec --force --initrd=/tmp/initrd --append="{}" /tmp/kernel'.format(kargs), log) + except BootManagerException as e: # if kexec fails, we've shut the machine down to a point where nothing # can run usefully anymore (network down, all modules unloaded, file # systems unmounted. write out the error, and cancel the boot process - log.write( "\n\n" ) - log.write( "-------------------------------------------------------\n" ) - log.write( "kexec failed with the following error. Please report\n" ) - log.write( "this problem to support@planet-lab.org.\n\n" ) - log.write( str(e) + "\n\n" ) - log.write( "The boot process has been canceled.\n" ) - log.write( "-------------------------------------------------------\n\n" ) + log.write("\n\n") + log.write("-------------------------------------------------------\n") + log.write("kexec failed with the following error. Please report\n") + log.write("this problem to support@planet-lab.org.\n\n") + log.write(str(e) + "\n\n") + log.write("The boot process has been canceled.\n") + log.write("-------------------------------------------------------\n\n") return