4 # Copyright (C) 2013 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """File storage functions.
28 from ganeti import errors
31 def GetSpaceInfo(path):
32 """Retrieves the free and total space of the device where the file is
36 @param path: Path of the file whose embracing device's capacity is
38 @return: a dictionary containing 'vg_size' and 'vg_free' given in MebiBytes
42 result = os.statvfs(path)
43 free = (result.f_frsize * result.f_bavail) / (1024 * 1024)
44 size = (result.f_frsize * result.f_blocks) / (1024 * 1024)
45 return {"vg_size": size, "vg_free": free}
47 raise errors.CommandError("Failed to retrieve file system information about"
48 " path: %s - %s" % (path, e.strerror))