X-Git-Url: http://git.onelab.eu/?p=bootmanager.git;a=blobdiff_plain;f=source%2Fsteps%2FChainBootNode.py;h=1fa960933ad3e296ee24a616cd7a0a209b6e766c;hp=a279c1c1aedbf97e41cba8c1ea73ef6f846a7b58;hb=75a5bf6f50a6ddccda6afcc9f3dc610f1b25d9c7;hpb=f42e550320ca54ea6439e0b54aa165ea11e1f3a3 diff --git a/source/steps/ChainBootNode.py b/source/steps/ChainBootNode.py index a279c1c..1fa9609 100644 --- a/source/steps/ChainBootNode.py +++ b/source/steps/ChainBootNode.py @@ -10,19 +10,20 @@ import string import re import os +import time -import UpdateNodeConfiguration -import MakeInitrd -from Exceptions import * import utils import systeminfo -import BootAPI import notify_messages -import time - +import BootAPI import ModelOptions +from Exceptions import BootManagerException + +import UpdateNodeConfiguration +import StopRunlevelAgent +import MakeInitrd -def Run( vars, log ): +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. @@ -41,194 +42,256 @@ 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: - 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 + ROOT_MOUNTED = 0 if vars.has_key('ROOT_MOUNTED'): - ROOT_MOUNTED= vars['ROOT_MOUNTED'] + ROOT_MOUNTED = vars['ROOT_MOUNTED'] if ROOT_MOUNTED == 0: - log.write( "Mounting node partitions\n" ) + log.write("Mounting node partitions\n") # 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) + systeminfo.get_block_devices_dict(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 -t proc none %s/proc" % SYSIMG_PATH - utils.sysexec( cmd, log ) - cmd = "mount %s %s/vservers" % (PARTITIONS["vservers"],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 + + utils.display_disks_status(PARTITIONS, "In ChainBootNode", log) # 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_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, e: - log.write( "Unable to write out /etc/planetlab/session, continuing anyway\n" ) + 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" ) - try: - cmd = "/etc/init.d/conf_files start --noscripts" - utils.sysexec_chroot( SYSIMG_PATH, cmd, log ) - except IOError, e: - log.write("conf_files failed with \n %s" % 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 ) + 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 - MakeInitrd.Run( vars, log ) + # 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 ) + UpdateNodeConfiguration.Run(vars, log) - log.write( "Updating ssh public host key with PLC.\n" ) - ssh_host_key= "" + 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 = 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 - update_vals= {} - update_vals['ssh_rsa_key']= ssh_host_key - BootAPI.call_api_function( vars, "BootUpdateNode", (update_vals,) ) + update_vals = {} + update_vals['ssh_rsa_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("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() + + # kernel and initrd come in various locations depending on the distro + + kernel_candidates = [] + kernel_candidates.append("/boot/vmlinux-{}*".format(kversion)) + # on f23 starting dec. 2015 - what a twisted naming scheme + kernel_candidates.append("/boot/*/{}*/initrd".format(kversion)) + + initrd_candidates = [] + # f16/18: expect initramfs image here + initrd_candidates.append ("/boot/initramfs-{}.img".format(kversion)) + # f20: uses a uid of some kind, e.g. /boot/543f88c129de443baaa65800cf3927ce//initrd + initrd_candidates.append ("/boot/*/{}/initrd".format(kversion)) + # Ubuntu: + initrd_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] + + kernel = find_file_in_sysimg(kernel_candidates) + if kernel: + utils.sysexec("cp {} /tmp/kernel".format(kernel), log) + else: + raise Exception("Unable to locate kernel - bailing out") + + + initrd = find_file_in_sysimg(initrd_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" ) - utils.sysexec( "umount %s/vservers" % SYSIMG_PATH, log ) - utils.sysexec( "umount %s/proc" % SYSIMG_PATH, log ) - utils.sysexec_noerr( "umount %s/dev" % SYSIMG_PATH, log ) - utils.sysexec_noerr( "umount %s/sys" % SYSIMG_PATH, log ) - utils.sysexec( "umount %s" % SYSIMG_PATH, log ) - utils.sysexec( "vgchange -an", log ) + log.write("Unmounting disks.\n") + + if (vars['ONE_PARTITION'] != '1'): + utils.sysexec("umount {}/vservers".format(SYSIMG_PATH), log) + utils.sysexec("umount {}/proc".format(SYSIMG_PATH), log) + utils.sysexec_noerr("umount {}/dev".format(SYSIMG_PATH), log) + utils.sysexec_noerr("umount {}/sys".format(SYSIMG_PATH), log) + utils.sysexec("umount {}".format(SYSIMG_PATH), log) + utils.sysexec("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("/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) - 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) + module = string.strip(line) if module in blacklist : - log.write("Skipping unload of kernel module '%s'.\n"%module) + log.write("Skipping unload of kernel module '{}'.\n".format(module)) elif module != "": - log.write( "Unloading %s\n" % module ) - utils.sysexec_noerr( "modprobe -r %s" % module, log ) + 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 @@ -239,17 +302,17 @@ def Run( vars, log ): # if int(parts[2]) == 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["root"]) if NODE_MODEL_OPTIONS & ModelOptions.SMP: kargs = kargs + " " + "acpi=off" try: @@ -257,28 +320,28 @@ 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"); + utils.sysexec_noerr('hwclock --systohc --utc ', log) +# utils.breakpoint("Before kexec"); try: - utils.sysexec( 'kexec --force --initrd=/tmp/initrd --append="%s" /tmp/kernel' % kargs, log) - 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