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The intended usage here is to basically kick restic as a background "do it, but don't bother my normal load" process. This allows passing the following environment variables in to influence scheduling: - NICE: usual CPU nice. Defaults to 0. This requires CAP_SYS_NICE to set a negative nice (IE, prioritize). - IONICE_CLASS: usual ionice class. Note that setting realtime requires CAP_SYS_ADMIN. Also note the actual ionice default is "none". - IONICE_PRIORITY: set the priority within the given class. Ignored if no class is specified due to class default of "no scheduler". --------- Signed-off-by: Brian Harring <ferringb@gmail.com> Co-authored-by: Michael Eischer <michael.eischer@fau.de>
10 lines
338 B
Bash
Executable file
10 lines
338 B
Bash
Executable file
#!/bin/sh -e
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# This must be tested against busybox sh, since there are quirks in its
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# implementation of tooling. Busybox rejects `ionice -c0 -n<something>` for example.
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set -- /usr/bin/restic "$@"
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if [ -n "${IONICE_CLASS}" ]; then
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set -- ionice -c "${IONICE_CLASS}" -n "${IONICE_PRIORITY:-4}" "$@"
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fi
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exec nice -n "${NICE:-0}" "$@"
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