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1 | # This file is part of systemd. |
2 | # | |
3 | # systemd is free software; you can redistribute it and/or modify it | |
4 | # under the terms of the GNU Lesser General Public License as published by | |
5 | # the Free Software Foundation; either version 2.1 of the License, or | |
6 | # (at your option) any later version. | |
7 | ||
8 | # See tmpfiles.d(5) for details | |
9 | ||
10 | # Set the NOCOW attribute for directories of journal files. This flag | |
11 | # is inheredited by their new files and sub-directories. Matters only | |
12 | # for btrfs filesystems. | |
13 | # | |
14 | # WARNING: Enabling the NOCOW attribute improves journal performance | |
15 | # substantially, but also disables the btrfs checksum logic. In | |
16 | # btrfs RAID filesystems the checksums are needed for rebuilding | |
17 | # corrupted files. Without checksums such rebuilds are not | |
18 | # possible. | |
19 | # | |
20 | # In a single-disk filesystem (or a filesystem without redundancy) | |
21 | # enabling the NOCOW attribute for journal files is safe, because | |
22 | # they have their own checksums and a rebuilding wouldn't be possible | |
23 | # in any case. | |
24 | ||
25 | h /var/log/journal - - - - +C | |
26 | h /var/log/journal/%m - - - - +C | |
27 | h /var/log/journal/remote - - - - +C |