root / lib / storage / filestorage.py @ a1860404
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1 | 820bade9 | Helga Velroyen | #
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2 | 820bade9 | Helga Velroyen | #
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3 | 820bade9 | Helga Velroyen | |
4 | 820bade9 | Helga Velroyen | # Copyright (C) 2013 Google Inc.
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5 | 820bade9 | Helga Velroyen | #
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6 | 820bade9 | Helga Velroyen | # This program is free software; you can redistribute it and/or modify
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7 | 820bade9 | Helga Velroyen | # it under the terms of the GNU General Public License as published by
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8 | 820bade9 | Helga Velroyen | # the Free Software Foundation; either version 2 of the License, or
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9 | 820bade9 | Helga Velroyen | # (at your option) any later version.
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10 | 820bade9 | Helga Velroyen | #
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11 | 820bade9 | Helga Velroyen | # This program is distributed in the hope that it will be useful, but
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12 | 820bade9 | Helga Velroyen | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 820bade9 | Helga Velroyen | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 820bade9 | Helga Velroyen | # General Public License for more details.
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15 | 820bade9 | Helga Velroyen | #
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16 | 820bade9 | Helga Velroyen | # You should have received a copy of the GNU General Public License
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17 | 820bade9 | Helga Velroyen | # along with this program; if not, write to the Free Software
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18 | 820bade9 | Helga Velroyen | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 820bade9 | Helga Velroyen | # 02110-1301, USA.
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20 | 820bade9 | Helga Velroyen | |
21 | 820bade9 | Helga Velroyen | |
22 | 820bade9 | Helga Velroyen | """File storage functions.
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23 | 820bade9 | Helga Velroyen |
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24 | 820bade9 | Helga Velroyen | """
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25 | 820bade9 | Helga Velroyen | |
26 | 5d94c034 | Helga Velroyen | import os |
27 | 820bade9 | Helga Velroyen | |
28 | 5d94c034 | Helga Velroyen | from ganeti import errors |
29 | 820bade9 | Helga Velroyen | |
30 | 820bade9 | Helga Velroyen | |
31 | 5d94c034 | Helga Velroyen | def GetSpaceInfo(path): |
32 | 820bade9 | Helga Velroyen | """Retrieves the free and total space of the device where the file is
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33 | 820bade9 | Helga Velroyen | located.
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34 | 820bade9 | Helga Velroyen |
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35 | 820bade9 | Helga Velroyen | @type path: string
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36 | 820bade9 | Helga Velroyen | @param path: Path of the file whose embracing device's capacity is
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37 | 820bade9 | Helga Velroyen | reported.
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38 | 5d94c034 | Helga Velroyen | @return: a dictionary containing 'vg_size' and 'vg_free' given in MebiBytes
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39 | 5d94c034 | Helga Velroyen |
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40 | 820bade9 | Helga Velroyen | """
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41 | 5d94c034 | Helga Velroyen | try:
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42 | 5d94c034 | Helga Velroyen | result = os.statvfs(path) |
43 | 5d94c034 | Helga Velroyen | free = (result.f_frsize * result.f_bavail) / (1024 * 1024) |
44 | 5d94c034 | Helga Velroyen | size = (result.f_frsize * result.f_blocks) / (1024 * 1024) |
45 | 5d94c034 | Helga Velroyen | return {"vg_size": size, "vg_free": free} |
46 | 5d94c034 | Helga Velroyen | except OSError, e: |
47 | 5d94c034 | Helga Velroyen | raise errors.CommandError("Failed to retrieve file system information about" |
48 | 5d94c034 | Helga Velroyen | " path: %s - %s" % (path, e.strerror)) |