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from __future__ import division
import os
from twisted.internet.defer import succeed
from landscape.lib.disk import (get_mount_info, get_filesystem_for_path)
def format_megabytes(megabytes):
if megabytes >= 1024 * 1024:
return "%.2fTB" % (megabytes / (1024 * 1024))
elif megabytes >= 1024:
return "%.2fGB" % (megabytes / 1024)
else:
return "%dMB" % (megabytes)
def usage(info):
total = info["total-space"]
used = total - info["free-space"]
return "%0.1f%% of %s" % ((used / total) * 100, format_megabytes(total))
class Disk(object):
def __init__(self, mounts_file="/proc/mounts", statvfs=os.statvfs):
self._mounts_file = mounts_file
self._statvfs = statvfs
def register(self, sysinfo):
self._sysinfo = sysinfo
def run(self):
main_info = get_filesystem_for_path("/home", self._mounts_file,
self._statvfs)
if main_info is not None:
total = main_info["total-space"]
if total <= 0:
root_main_info = get_filesystem_for_path(
"/", self._mounts_file, self._statvfs)
if root_main_info is not None:
total = root_main_info["total-space"]
main_info = root_main_info
if total <= 0:
main_usage = "unknown"
else:
main_usage = usage(main_info)
self._sysinfo.add_header("Usage of " + main_info["mount-point"],
main_usage)
else:
self._sysinfo.add_header("Usage of /home", "unknown")
seen_mounts = set()
seen_devices = set()
infos = list(get_mount_info(self._mounts_file, self._statvfs))
infos.sort(key=lambda i: len(i["mount-point"]))
for info in infos:
total = info["total-space"]
mount_seen = info["mount-point"] in seen_mounts
device_seen = info["device"] in seen_devices
seen_mounts.add(info["mount-point"])
seen_devices.add(info["device"])
if mount_seen or device_seen:
continue
if total <= 0:
# Some "virtual" filesystems have 0 total space. ignore them.
continue
used = ((total - info["free-space"]) / total) * 100
if used >= 85:
self._sysinfo.add_note("%s is using %s"
% (info["mount-point"], usage(info)))
return succeed(None)