3 # Copyright (c) 2003 Intel Corporation
6 # Copyright (c) 2004-2006 The Trustees of Princeton University
11 from Exceptions import *
19 See if a node installation is valid. More checks should certainly be
20 done in the future, but for now, make sure that the sym links kernel-boot
23 Expect the following variables to be set:
24 SYSIMG_PATH the path where the system image will be mounted
25 (always starts with TEMP_PATH)
26 ROOT_MOUNTED the node root file system is mounted
27 NODE_ID The db node_id for this machine
28 PLCONF_DIR The directory to store the configuration file in
30 Set the following variables upon successfully running:
31 ROOT_MOUNTED the node root file system is mounted
34 log.write( "\n\nStep: Validating node installation.\n" )
36 # make sure we have the variables we need
38 SYSIMG_PATH= vars["SYSIMG_PATH"]
40 raise ValueError, "SYSIMG_PATH"
42 NODE_ID= vars["NODE_ID"]
44 raise ValueError, "NODE_ID"
46 PLCONF_DIR= vars["PLCONF_DIR"]
48 raise ValueError, "PLCONF_DIR"
50 NODE_MODEL_OPTIONS= vars["NODE_MODEL_OPTIONS"]
52 PARTITIONS= vars["PARTITIONS"]
53 if PARTITIONS == None:
54 raise ValueError, "PARTITIONS"
57 raise BootManagerException, "Missing variable in vars: %s\n" % var
58 except ValueError, var:
59 raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
63 if vars.has_key('ROOT_MOUNTED'):
64 ROOT_MOUNTED= vars['ROOT_MOUNTED']
66 # mount the root system image if we haven't already.
67 # capture BootManagerExceptions during the vgscan/change and mount
68 # calls, so we can return 0 instead
71 # simply creating an instance of this class and listing the system
72 # block devices will make them show up so vgscan can find the planetlab
74 systeminfo.get_block_device_list(vars, log)
77 utils.sysexec( "vgscan", log )
78 utils.sysexec( "vgchange -ay planetlab", log )
79 except BootManagerException, e:
80 log.write( "BootManagerException during vgscan/vgchange: %s\n" %
84 utils.makedirs( SYSIMG_PATH )
86 for filesystem in ("root","vservers"):
88 # first run fsck to prevent fs corruption from hanging mount...
89 log.write( "fsck %s file system\n" % filesystem )
90 utils.sysexec("e2fsck -v -p %s" % (PARTITIONS[filesystem]), log, fsck=True)
91 except BootManagerException, e:
92 log.write( "BootManagerException during fsck of %s (%s) filesystem : %s\n" %
93 (filesystem, PARTITIONS[filesystem], str(e)) )
95 log.write( "Trying to recover filesystem errors on %s\n" % filesystem )
96 utils.sysexec("e2fsck -v -y %s" % (PARTITIONS[filesystem]),log, fsck=True)
97 except BootManagerException, e:
98 log.write( "BootManagerException during trying to recover filesystem errors on %s (%s) filesystem : %s\n" %
99 (filesystem, PARTITIONS[filesystem], str(e)) )
102 # disable time/count based filesystems checks
103 utils.sysexec_noerr( "tune2fs -c -1 -i 0 %s" % PARTITIONS[filesystem], log)
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" )