文件操作 - journal-nocow.conf
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文件: /usr/lib/tmpfiles.d/journal-nocow.conf
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# 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 inherited 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
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