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