checking in so i don't lose this snippet, but i need to do this totally different.

storage/badblocks.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+# Email alerts about disks if there are any errors found.
+# It can take a LONG time depending on the speed/type of disk and size of disk.
+# Should probably only cron it once a week or so.
+
+import os
+import pycryptsetup
+import lvm
+import subprocess
+
+def getDisks():
+    disks = []
+    for d in psutil.disk_partitions(all = False):
+        if d.device not in disks:  # Avoid dupes
+            _devpath = os.path.split(d.device)
+            if _devpath[1] == 'mapper':  # It's actually an LVM, LUKS, etc.
+                # Is it an LVM device?
+                if lvm.scan():
+                    continue
+                # Is it a LUKS device?
+                _crypt = pycryptsetup.CryptSetup(d.device)
+                if _crypt.isLuks() == 0:
+                    # We can (and should) get the actual physical device
+                    _dev = _crypt.info()['device']
+                    if _dev not in disks:
+                        disks.append(_dev)
+            else:
+                disks.append(d.device)
+    return(disks)
+
+def chkDisk(disk):
+    pass
+
+def main():
+    pass
+
+def userChk():
+    # Needs to be run as root/with sudo, because of e.g. cryptsetup, etc.
+    if os.geteuid() != 0:
+        raise PermissionError('This script must be run with root privileges.')
+
+if __name__ == '__main__':
+    main()