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.

3 files changed, 216 insertions, 13 deletions

diff --git a/abs/core/LinHES-system/PKGBUILD b/abs/core/LinHES-system/PKGBUILD
index 18f1559..c700861 100755
--- a/abs/core/LinHES-system/PKGBUILD
+++ b/abs/core/LinHES-system/PKGBUILD
@@ -1,6 +1,6 @@
 pkgname=LinHES-system
 pkgver=8.3
-pkgrel=21
+pkgrel=22
 arch=('i686' 'x86_64')
 install=system.install
 pkgdesc="Everything that makes LinHES an automated system"
@@ -17,7 +17,8 @@ binfiles="LinHES-start optimize_mythdb.py myth_mtc.py
  install_supplemental_service.sh get_airplay_key importfiles.sh
  lh_system_backup lh_system_backup_job lh_system_restore_job
  lh_system_host_update lh_system_all_host_update
- add_storage.py balance_storage.py diskspace.sh cacheclean lh_backend_control.sh
+ add_storage.py balance_storage_groups.py empty_storage_groups.py
+ diskspace.sh cacheclean lh_backend_control.sh
  create_media_dirs.sh msg_client.py msg_daemon.py mythvidexport.py
  gen_is_xml.py gen_lib_xml.py gen_light_include.py gen_game_xml.py
  misc_recent_recordings.pl misc_status_config.py misc_status_info.sh
@@ -98,7 +99,8 @@ md5sums=('76842f8cff548d2c1289e0992a8b84dd'
          '74e17d6f7453c52d56fecaed5c3f6ad5'
          '47e093e8cfe4b5b96602358e1f540832'
          '63bbc62240f46a9997eaae4a84b09b76'
-         'd67a034fa1d8f253f42982f27a8d88ff'
+         '8ed2474fa52775769255cfb0dba00a1a'
+         '7753c7ce3f0db5944b7372f5d19bb374'
          '2c005d95312018bef80092136f80f254'
          'c8db6a83ecc089ea37ab7fcb0f7a01cf'
          'ca63946920ba33de1f15abda83e74e40'
diff --git a/abs/core/LinHES-system/balance_storage.py b/abs/core/LinHES-system/balance_storage_groups.py
index 5556fd0..e088cb5 100755
--- a/abs/core/LinHES-system/balance_storage.py
+++ b/abs/core/LinHES-system/balance_storage_groups.py
@@ -74,7 +74,7 @@ if __name__ == '__main__':
             freePcent = getFreePercentForDir(directory)
             freeSize = getFreeSpaceForDir(directory)
             SGDIRSdata.append([directory, freePcent, freeSize])
-            print "  " + directory + " - " + str(freePcent * 100) + "%"
+            print "  %s - %.2f%%" % (directory, freePcent * 100)
 
         # Sort data on percent free
         SGDIRSdata = sorted(SGDIRSdata, reverse=True, key=operator.itemgetter(1))
@@ -96,9 +96,9 @@ if __name__ == '__main__':
 
         print "------------------------------------------------"
         print "Most Used Storage Group Directory with files to move: "
-        print "  " + str(mostFull[0]) + " - " + str(mostFull[1] * 100) + "%"
+        print "  %s - %.2f%%" % (mostFull[0], mostFull[1] * 100)
         print "Least Used Storage Group Directory: "
-        print "  " + str(leastFull[0]) + " - " + str(leastFull[1] * 100) + "%"
+        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]:
@@ -107,19 +107,19 @@ if __name__ == '__main__':
 
         # 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")])
-        fileToMove = mostFull[0] + "/" + fileToMove
+        filePathToMove = mostFull[0] + "/" + fileToMove
 
         # Check that the file isn't too big for least used dir
-        fileSize = getFileSize(fileToMove)
+        fileSize = getFileSize(filePathToMove)
         if (fileSize > getFreeSpaceForDir(leastFull[0])):
             # Too big to move
-            print fileToMove + " is too big to move to " + leastFull[0]
+            print filePathToMove + " is too big to move to " + leastFull[0]
             sys.exit()
 
         print "------------------------------------------------"
         print "Move File:"
-        print "  " + fileToMove
-        print "  Size: " + sizeof_fmt(os.path.getsize(fileToMove))
+        print "  " + filePathToMove
+        print "  Size: " + sizeof_fmt(os.path.getsize(filePathToMove))
         print "To:"
         print "  " + leastFull[0]
         print "  Available: " + sizeof_fmt(getFreeSpaceForDir(leastFull[0]))
@@ -136,12 +136,18 @@ if __name__ == '__main__':
                 print "  System is busy. The file will not be moved."
                 sys.exit()
             print "Moving File..."
-            shutil.move(fileToMove, leastFull[0])
+            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(fileToMove + "*.png")
+            pngFiles = glob.glob(filePathToMove + "*.png")
             for p in pngFiles:
                 os.remove(p)
                 print "  " + p
diff --git a/abs/core/LinHES-system/empty_storage_groups.py b/abs/core/LinHES-system/empty_storage_groups.py
new file mode 100755
index 0000000..a143d7d
--- /dev/null
+++ b/abs/core/LinHES-system/empty_storage_groups.py
@@ -0,0 +1,195 @@
+#!/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.")
+    cmdargs = parser.parse_args()
+
+    SGs = []
+    SGDIRS = []
+    SGgrp = "Default"
+    SGselectdata = []
+
+    signal.signal(signal.SIGINT, signal_handler)
+
+    print "\nEmpty a MythTV Storage Group Directory\nPress Ctrl+C to quit"
+
+    # Get Storage Groups from MythDB
+    try:
+        from MythTV import MythDB
+        mythDB = MythDB()
+        records = mythDB.getStorageGroup()
+        recs = mythDB.getStorageGroup()
+    except:
+        print "Couldn't connect to MythTV database."
+        sys.exit(1)
+
+    # get list of non duplicate SGs
+    for record in records:
+        SGs.append(record.groupname)
+        SGs=list(set(SGs))
+    # Move Default to top of list
+    if "Default" in SGs:
+        SGs.remove("Default")
+        SGs.insert(0,"Default")
+
+    # ask user which SG to use
+    print "\n------------------------------------------------"
+    print "Storage Groups:"
+    for i,sg in enumerate(SGs):
+        print str(i+1) + ": " + sg
+
+    try:
+        SGselect=raw_input("\nEnter the number of the storage group to use (default 1): ") or 1
+        SGselect=int(SGselect)
+        if SGselect > len(SGs) or SGselect < 1:
+            SGselect=int("e")
+    except ValueError:
+        print "You must enter a number between 1 and " + str(len(SGs)) + ". Exiting."
+        sys.exit(0)
+
+    SGgrp=SGs[SGselect-1]
+
+    # Get Storage Group directories
+    for record in recs:
+        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:"
+        SGcnt=0
+        # 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
+            # Check if SG has data files to move
+            if len(glob.glob1(directory,"*.mpg")) or len(glob.glob1(directory,"*.nuv")) or len(glob.glob1(directory,"*.jpg")):
+                freePcent = getFreePercentForDir(directory)
+                freeSize = getFreeSpaceForDir(directory)
+                SGDIRSdata.append([directory, freePcent, freeSize])
+                SGcnt=SGcnt+1
+                print "%s: %s - %.2f%%" % (SGcnt, directory, freePcent * 100)
+            else:
+                # Check if the selected SG dir has no data files exit
+                if SGselectdata and SGselectdata[0] == directory:
+                    print "\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting"
+                    sys.exit(0)
+
+        # Exit if no SGs with data found
+        if SGcnt is 0:
+            print "\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting."
+            sys.exit(0)
+
+        # Ask user to select which SG to empty if not already selected
+        if not SGselectdata:
+            try:
+                SGDIRselect=int(raw_input("\nEnter the number of the storage group directory to empty: "))
+                if SGDIRselect > SGcnt or SGDIRselect < 1:
+                    SGDIRselect=int("e")
+            except ValueError:
+                print "You must enter a number between 1 and %s. Exiting." %SGcnt
+                sys.exit(0)
+
+            SGselectdata=SGDIRSdata[SGDIRselect-1]
+
+        # Sort data on percent free
+        SGDIRSdata = sorted(SGDIRSdata, reverse=True, key=operator.itemgetter(1))
+        leastFull = SGDIRSdata[-1]
+
+        # Make sure leastFull and SGselectdata are not the same dir
+        if leastFull[0] == SGselectdata[0]:
+            leastFull = SGDIRSdata[-2]
+
+        # Get random file from user selected dir
+        fileToMove = random.choice([f for f in os.listdir(SGselectdata[0]) if f.endswith(".mpg") or f.endswith(".nuv") or f.endswith(".jpg")])
+        filePathToMove = SGselectdata[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:
+                a=raw_input("\n%s. Overwrite destination (y/n)? " % e)
+                if a == "y" or a == "Y":
+                    os.remove(leastFull[0] + "/" + fileToMove)
+                    shutil.move(filePathToMove, leastFull[0])
+                else:
+                    b=raw_input("\nRemove %s (y/n)? " % filePathToMove)
+                    if b == "y" or b == "Y":
+                        os.remove(filePathToMove)
+            # eg. source or destination doesn't exist
+            except IOError as e:
+                print('Error: %s' % e.strerror)
+
+            # Remove png files for Default & LiveTV SGs
+            if SGgrp == "Default" or SGgrp == "LiveTV":
+                print "------------------------------------------------"
+                print "Removing png Files:"
+                pngFiles = glob.glob(filePathToMove + "*.png")
+                for p in pngFiles:
+                    os.remove(p)
+                    print "  " + p