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author | Britney Fransen <brfransen@gmail.com> | 2015-12-16 15:29:20 (GMT) |
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committer | Britney Fransen <brfransen@gmail.com> | 2015-12-16 15:29:20 (GMT) |
commit | bd3cd46cfcbc9998150faefb71027957a5304e28 (patch) | |
tree | c74b9ad786f1b99b9c8a9194513322199d09c239 /abs/core/LinHES-system/balance_storage_groups.py | |
parent | 47c4885d06e57403a183a843c3cf35491dab9d86 (diff) | |
download | linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.zip linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.tar.gz linhes_pkgbuild-bd3cd46cfcbc9998150faefb71027957a5304e28.tar.bz2 |
LinHES-system: add empty_storage_groups.py
empty_storage_groups.py is a utility that will move files from the selected storage group dir to an available least full storage group dir.
renamed balance_storage.py to balance_storage_groups.py.
Diffstat (limited to 'abs/core/LinHES-system/balance_storage_groups.py')
-rwxr-xr-x | abs/core/LinHES-system/balance_storage_groups.py | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/abs/core/LinHES-system/balance_storage_groups.py b/abs/core/LinHES-system/balance_storage_groups.py new file mode 100755 index 0000000..e088cb5 --- /dev/null +++ b/abs/core/LinHES-system/balance_storage_groups.py @@ -0,0 +1,153 @@ +#!/usr/bin/python2 + +import argparse, glob, operator, os, random, shutil, subprocess, sys, signal +shouldQuit = False + +def getFreeSpaceForDir(dir): + stats = os.statvfs(dir) + return (stats.f_bavail * stats.f_frsize) + +def getFreePercentForDir(dir): + stats = os.statvfs(dir) + total = (stats.f_blocks) + avail = (stats.f_bavail) + return (total - avail) / float(total) + +def getFileSize(fullPath): + return os.path.getsize(fullPath) + +def sizeof_fmt(num, suffix='B'): + for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']: + if abs(num) < 1024.0: + return "%3.1f %s%s" % (num, unit, suffix) + num /= 1024.0 + return "%.1f %s%s" % (num, 'Yi', suffix) + +def signal_handler(signal, frame): + print "\nWill quit when file has been moved.\nMoving File..." + global shouldQuit + shouldQuit = True + +if __name__ == '__main__': + parser = argparse.ArgumentParser() + parser.add_argument('-c', '--checkonly', action='store_true', help="Check only, don't move any files.") + parser.add_argument('-p', '--percent', type=int, default=7, help="The percentage difference between the most full dir and least full dir that will stop balancing.") + cmdargs = parser.parse_args() + + SGDIRS = [] + SGgrp = "Default" + + signal.signal(signal.SIGINT, signal_handler) + + print "\nBalance MythTV Storage Group Directories\nPress Ctrl+C to quit" + + # Get Storage Groups from MythDB + try: + from MythTV import MythDB + mythDB = MythDB() + records = mythDB.getStorageGroup() + except: + print "Couldn't connect to MythTV database." + sys.exit(1) + + # Get Storage Group directories + for record in records: + if record.groupname == SGgrp: + dirname = record.dirname + SGDIRS.append(dirname) + + # If there are less than 2 directories defined bail as we can't move anything + if len(SGDIRS) < 2: + print "There are less than 2 directories defined. Exiting." + sys.exit(0) + + while not shouldQuit: + SGDIRSdata = [] + print "\n------------------------------------------------" + print "'" + SGgrp + "' Storage Group Directories - Percent Used:" + # Get percent free and size free + for directory in SGDIRS: + # Check if SG path exists + if not os.path.exists(directory): + print " " + directory + " - Not Mounted" + continue + freePcent = getFreePercentForDir(directory) + freeSize = getFreeSpaceForDir(directory) + SGDIRSdata.append([directory, freePcent, freeSize]) + print " %s - %.2f%%" % (directory, freePcent * 100) + + # Sort data on percent free + SGDIRSdata = sorted(SGDIRSdata, reverse=True, key=operator.itemgetter(1)) + #print SGDIRSdata + + # Check if SG has any mpg or nuv files + i=0 + for dir in SGDIRSdata: + mostFull = SGDIRSdata[i] + i=i+1 + if len(glob.glob1(mostFull[0],"*.mpg")) or len(glob.glob1(mostFull[0],"*.nuv")): + break + else: + if i == 1: + print "------------------------------------------------" + print " " + mostFull[0] + " - NO files to move" + + leastFull = SGDIRSdata[-1] + + print "------------------------------------------------" + print "Most Used Storage Group Directory with files to move: " + print " %s - %.2f%%" % (mostFull[0], mostFull[1] * 100) + print "Least Used Storage Group Directory: " + print " %s - %.2f%%" % (leastFull[0], leastFull[1] * 100) + + # Check if mostFull and leastFull are within the percent var of each other + if mostFull[1] - (float(cmdargs.percent) / 100) < leastFull[1]: + print "\nThe most used and least used storage group directories are\nwithin " + str(cmdargs.percent) + "% used of each other. No files will be moved." + sys.exit() + + # Get random file from most used dir + fileToMove = random.choice([f for f in os.listdir(mostFull[0]) if f.endswith(".mpg") or f.endswith(".nuv")]) + filePathToMove = mostFull[0] + "/" + fileToMove + + # Check that the file isn't too big for least used dir + fileSize = getFileSize(filePathToMove) + if (fileSize > getFreeSpaceForDir(leastFull[0])): + # Too big to move + print filePathToMove + " is too big to move to " + leastFull[0] + sys.exit() + + print "------------------------------------------------" + print "Move File:" + print " " + filePathToMove + print " Size: " + sizeof_fmt(os.path.getsize(filePathToMove)) + print "To:" + print " " + leastFull[0] + print " Available: " + sizeof_fmt(getFreeSpaceForDir(leastFull[0])) + + # Move file + if cmdargs.checkonly: + print "------------------------------------------------" + print"Check Only option was used. No files were moved." + shouldQuit = True + else: + print "------------------------------------------------" + print "Checking System Status..." + if subprocess.call(["/usr/bin/python2", "/usr/LH/bin/idle.py", "-s"]): + print " System is busy. The file will not be moved." + sys.exit() + print "Moving File..." + try: + shutil.move(filePathToMove, leastFull[0]) + # eg. src and dest are the same file + except shutil.Error as e: + print('Error: %s' % e) + except IOError as e: + print('Error: %s' % e.strerror) + + # Remove png files + print "------------------------------------------------" + print "Removing png Files:" + pngFiles = glob.glob(filePathToMove + "*.png") + for p in pngFiles: + os.remove(p) + print " " + p |