6 # Copyright (c) 2003 Intel Corporation
9 # Copyright (c) 2004-2006 The Trustees of Princeton University
10 # All rights reserved.
14 from Exceptions import *
22 See if a node installation is valid. More checks should certainly be
23 done in the future, but for now, make sure that the sym links kernel-boot
26 Expect the following variables to be set:
27 SYSIMG_PATH the path where the system image will be mounted
28 (always starts with TEMP_PATH)
29 ROOT_MOUNTED the node root file system is mounted
30 NODE_ID The db node_id for this machine
31 PLCONF_DIR The directory to store the configuration file in
33 Set the following variables upon successfully running:
34 ROOT_MOUNTED the node root file system is mounted
37 log.write( "\n\nStep: Validating node installation.\n" )
39 # make sure we have the variables we need
41 SYSIMG_PATH= vars["SYSIMG_PATH"]
43 raise ValueError, "SYSIMG_PATH"
45 NODE_ID= vars["NODE_ID"]
47 raise ValueError, "NODE_ID"
49 PLCONF_DIR= vars["PLCONF_DIR"]
51 raise ValueError, "PLCONF_DIR"
53 NODE_MODEL_OPTIONS= vars["NODE_MODEL_OPTIONS"]
55 PARTITIONS= vars["PARTITIONS"]
56 if PARTITIONS == None:
57 raise ValueError, "PARTITIONS"
60 raise BootManagerException, "Missing variable in vars: %s\n" % var
61 except ValueError, var:
62 raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
66 if vars.has_key('ROOT_MOUNTED'):
67 ROOT_MOUNTED= vars['ROOT_MOUNTED']
69 # mount the root system image if we haven't already.
70 # capture BootManagerExceptions during the vgscan/change and mount
71 # calls, so we can return 0 instead
74 # simply creating an instance of this class and listing the system
75 # block devices will make them show up so vgscan can find the planetlab
77 systeminfo.get_block_device_list(vars, log)
80 utils.sysexec( "vgscan", log )
81 utils.sysexec( "vgchange -ay planetlab", log )
82 except BootManagerException, e:
83 log.write( "BootManagerException during vgscan/vgchange: %s\n" %
87 utils.makedirs( SYSIMG_PATH )
89 for filesystem in ("root","vservers"):
91 # first run fsck to prevent fs corruption from hanging mount...
92 log.write( "fsck %s file system\n" % filesystem )
93 utils.sysexec("e2fsck -v -p %s" % (PARTITIONS[filesystem]),log)
94 except BootManagerException, e:
95 log.write( "BootManagerException during fsck of %s (%s) filesystem : %s\n" %
96 (filesystem, PARTITIONS[filesystem], str(e)) )
98 log.write( "Trying to recover filesystem errors on %s\n" % filesystem )
99 utils.sysexec("e2fsck -v -y %s" % (PARTITIONS[filesystem]),log)
100 except BootManagerException, e:
101 log.write( "BootManagerException during trying to recover filesystem errors on %s (%s) filesystem : %s\n" %
102 (filesystem, PARTITIONS[filesystem], str(e)) )
106 # then attempt to mount them
107 log.write( "mounting root file system\n" )
108 utils.sysexec("mount -t ext3 %s %s" % (PARTITIONS["root"],SYSIMG_PATH),log)
109 except BootManagerException, e:
110 log.write( "BootManagerException during mount of /root: %s\n" % str(e) )
114 PROC_PATH = "%s/proc" % SYSIMG_PATH
115 utils.makedirs(PROC_PATH)
116 log.write( "mounting /proc\n" )
117 utils.sysexec( "mount -t proc none %s" % PROC_PATH, log )
118 except BootManagerException, e:
119 log.write( "BootManagerException during mount of /proc: %s\n" % str(e) )
123 VSERVERS_PATH = "%s/vservers" % SYSIMG_PATH
124 utils.makedirs(VSERVERS_PATH)
125 log.write( "mounting vserver partition in root file system\n" )
126 utils.sysexec("mount -t ext3 %s %s" % (PARTITIONS["vservers"], VSERVERS_PATH), log)
127 except BootManagerException, e:
128 log.write( "BootManagerException during mount of /vservers: %s\n" % str(e) )
132 vars['ROOT_MOUNTED']= 1
134 # check if the base kernel is installed
135 # these 2 links are created by our kernel's post-install scriplet
136 log.write("Checking for a custom kernel\n")
138 os.stat("%s/boot/kernel-boot" % SYSIMG_PATH)
140 log.write( "Couldn't locate base kernel (you might be using the stock kernel).\n")
143 # check if the model specified kernel is installed
145 if NODE_MODEL_OPTIONS & ModelOptions.SMP:
148 os.stat("%s/boot/kernel-boot%s" % (SYSIMG_PATH,option))
150 # smp kernel is not there; remove option from modeloptions
151 # such that the rest of the code base thinks we are just
152 # using the base kernel.
153 NODE_MODEL_OPTIONS = NODE_MODEL_OPTIONS & ~ModelOptions.SMP
154 vars["NODE_MODEL_OPTIONS"] = NODE_MODEL_OPTIONS
155 log.write( "WARNING: Couldn't locate smp kernel.\n")
157 # write out the node id to /etc/planetlab/node_id. if this fails, return
158 # 0, indicating the node isn't a valid install.
160 node_id_file_path= "%s/%s/node_id" % (SYSIMG_PATH,PLCONF_DIR)
161 node_id_file= file( node_id_file_path, "w" )
162 node_id_file.write( str(NODE_ID) )
165 log.write( "Updated /etc/planetlab/node_id\n" )
167 log.write( "Unable to write out /etc/planetlab/node_id\n" )
170 log.write( "Node installation appears to be ok\n" )