From: Frank Brehm <frank@brehm-online.com>
Date: Wed, 5 Oct 2016 01:10:05 +0000 (+0200)
Subject: daily autocommit
X-Git-Url: https://git.uhu-banane.org/?a=commitdiff_plain;h=9c530e756dc3631a11ebb1c26b6b97db917ac2fa;p=config%2Fbruni%2Fetc.git

daily autocommit
---

diff --git a/tmpfiles.d/journal-nocow.conf b/tmpfiles.d/journal-nocow.conf
new file mode 100644
index 00000000..89fea32a
--- /dev/null
+++ b/tmpfiles.d/journal-nocow.conf
@@ -0,0 +1,27 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+
+# See tmpfiles.d(5) for details
+
+# Set the NOCOW attribute for directories of journal files. This flag
+# is inheredited by their new files and sub-directories. Matters only
+# for btrfs filesystems.
+#
+# WARNING: Enabling the NOCOW attribute improves journal performance
+#     substantially, but also disables the btrfs checksum logic. In
+#     btrfs RAID filesystems the checksums are needed for rebuilding
+#     corrupted files. Without checksums such rebuilds are not
+#     possible.
+#
+# In a single-disk filesystem (or a filesystem without redundancy)
+# enabling the NOCOW attribute for journal files is safe, because
+# they have their own checksums and a rebuilding wouldn't be possible
+# in any case.
+
+#h /var/log/journal - - - - +C
+#h /var/log/journal/%m - - - - +C
+#h /var/log/journal/remote - - - - +C