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44 import os, sys, shutil
52 Setup the install environment:
53 - unmount anything in the temp/sysimg path (possible from previous
55 - create temp directories
57 Expect the following variables from the store:
58 TEMP_PATH the path to download and store temp files to
59 SYSIMG_DIR the directory name of the system image
60 contained in TEMP_PATH
61 PLCONF_DIR The directory to store the configuration file in
63 Sets the following variables:
64 SYSIMG_PATH the directory where the system image will be mounted,
65 (= TEMP_PATH/SYSIMG_DIR)
68 log.write( "\n\nStep: Install: Initializing.\n" )
70 # make sure we have the variables we need
72 TEMP_PATH= vars["TEMP_PATH"]
74 raise ValueError("TEMP_PATH")
76 SYSIMG_PATH= vars["SYSIMG_PATH"]
78 raise ValueError("SYSIMG_PATH")
80 PLCONF_DIR= vars["PLCONF_DIR"]
82 raise ValueError, "PLCONF_DIR"
85 raise BootManagerException, "Missing variable in vars: %s\n" % var
86 except ValueError, var:
87 raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
89 # if this is a fresh install, then nothing should be
90 # here, but we support restarted installs without rebooting
91 # so who knows what the current state is
93 log.write( "Unmounting any previous mounts\n" )
96 # backwards compat, though, we should never hit this case post PL 3.2
97 os.stat("%s/rcfs/taskclass"%SYSIMG_PATH)
98 utils.sysexec_noerr( "chroot %s umount /rcfs" % SYSIMG_PATH, log )
102 utils.sysexec_noerr( "umount %s/proc" % SYSIMG_PATH, log )
103 utils.sysexec_noerr( "umount %s/mnt/cdrom" % SYSIMG_PATH, log )
104 utils.sysexec_noerr( "umount %s/vservers" % SYSIMG_PATH, log )
105 utils.sysexec_noerr( "umount %s" % SYSIMG_PATH, log )
107 log.write( "Removing any old files, directories\n" )
108 utils.removedir( TEMP_PATH )
110 log.write( "Cleaning up any existing PlanetLab config files\n" )
111 utils.removedir( PLCONF_DIR )
113 # create the temp path and sysimg path. since sysimg
114 # path is in temp path, both are created here
115 log.write( "Creating system image path\n" )
116 utils.makedirs( SYSIMG_PATH )