-# enabling this will cause the node to ask for breakpoint-mode at startup
-# production code should read False/False
-PROMPT_MODE=False
-# default for when prompt is turned off, or it's on but the timeout triggers
-BREAKPOINT_MODE=False
-# in seconds : if no input, proceed
-PROMPT_TIMEOUT=5
-
-def prompt_for_breakpoint_mode ():
-
- global BREAKPOINT_MODE
- if PROMPT_MODE:
- default_answer=BREAKPOINT_MODE
- answer=''
- if BREAKPOINT_MODE:
- display="[y]/n"
- else:
- display="y/[n]"
- sys.stdout.write ("Want to run in breakpoint mode ? %s "%display)
- sys.stdout.flush()
- r,w,e = select.select ([sys.stdin],[],[],PROMPT_TIMEOUT)
- if r:
- answer = string.strip(sys.stdin.readline())
- else:
- sys.stdout.write("\nTimed-out (%d s)"%PROMPT_TIMEOUT)
- if answer:
- BREAKPOINT_MODE = ( answer == "y" or answer == "Y")
- else:
- BREAKPOINT_MODE = default_answer
- label="Off"
- if BREAKPOINT_MODE:
- label="On"
- sys.stdout.write("\nCurrent BREAKPOINT_MODE is %s\n"%label)
-
-def breakpoint (message, cmd = None):
-
- if BREAKPOINT_MODE:
-
- if cmd is None:
- cmd="/bin/sh"
- message=message+" -- Entering bash - type ^D to proceed"
-
- print message
- os.system(cmd)
+def sha1_file(filename):
+ """Calculate sha1 hash of file."""
+ try:
+ try:
+ import hashlib
+ m = hashlib.sha1()
+ except:
+ import sha
+ m = sha.new()
+ f = file(filename, 'rb')
+ while True:
+ # 256 KB seems ideal for speed/memory tradeoff
+ # It wont get much faster with bigger blocks, but
+ # heap peak grows
+ block = f.read(256 * 1024)
+ if len(block) == 0:
+ # end of file
+ break
+ m.update(block)
+ # Simple trick to keep total heap even lower
+ # Delete the previous block, so while next one is read
+ # we wont have two allocated blocks with same size
+ del block
+ return m.hexdigest()
+ except IOError:
+ raise BootManagerException("Cannot calculate SHA1 hash of {}".format(filename))
+
+def display_disks_status(PARTITIONS, message, log):
+ log.write("{} - PARTITIONS status - BEG\n".format(message))
+ sysexec_noerr("vgdisplay", log)
+ sysexec_noerr("pvdisplay", log)
+ for name, path in PARTITIONS.items():
+ log.write("PARTITIONS[{}]={}\n".format(name,path))
+ sysexec_noerr("ls -l {}".format(path), log)
+ log.write("{} - PARTITIONS status - END\n".format(message))