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nixos/duplicity: add options to exercise all possible verbs 

except restore ;)
master
Guillaume Girol 2021-05-13 12:00:00 +00:00
parent e67e79642e
commit 41c7fa448f
1 changed files with 28 additions and 2 deletions
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30
nixos/modules/services/backup/duplicity.nix
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@ -84,7 +84,7 @@ in
extraFlags = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "--full-if-older-than" "1M" ];
example = [ "--backend-retry-delay" "100" ];
description = ''
Extra command-line flags passed to duplicity. See
<citerefentry><refentrytitle>duplicity</refentrytitle>
@ -92,6 +92,20 @@ in
'';
};
fullIfOlderThan = mkOption {
type = types.str;
default = "never";
example = "1M";
description = ''
If <literal>"never"</literal> (the default) always do incremental
backups (the first backup will be a full backup, of course). If
<literal>"always"</literal> always do full backups. Otherwise, this
must be a string representing a duration. Full backups will be made
when the latest full backup is older than this duration. If this is not
the case, an incremental backup is performed.
'';
};
cleanup = {
maxAge = mkOption {
type = types.nullOr types.str;
@ -112,6 +126,16 @@ in
associated incremental sets).
'';
};
maxIncr = mkOption {
type = types.nullOr types.int;
default = null;
example = 1;
description = ''
If non-null, delete incremental sets of all backups sets that are
older than the count:th last full backup (in other words, keep only
old full backups and not their increments).
'';
};
};
};
@ -133,10 +157,12 @@ in
${dup} cleanup ${target} --force ${extra}
${lib.optionalString (cfg.cleanup.maxAge != null) "${dup} remove-older-than ${lib.escapeShellArg cfg.cleanup.maxAge} ${target} --force ${extra}"}
${lib.optionalString (cfg.cleanup.maxFull != null) "${dup} remove-all-but-n-full ${toString cfg.cleanup.maxFull} ${target} --force ${extra}"}
exec ${dup} incr ${lib.escapeShellArgs (
${lib.optionalString (cfg.cleanup.maxIncr != null) "${dup} remove-all-incr-but-n-full ${toString cfg.cleanup.maxIncr} ${target} --force ${extra}"}
exec ${dup} ${if cfg.fullIfOlderThan == "always" then "full" else "incr"} ${lib.escapeShellArgs (
[ cfg.root cfg.targetUrl ]
++ concatMap (p: [ "--include" p ]) cfg.include
++ concatMap (p: [ "--exclude" p ]) cfg.exclude
++ (lib.optionals (cfg.fullIfOlderThan != "never" && cfg.fullIfOlderThan != "always") [ "--full-if-older-than" cfg.fullIfOlderThan ])
)} ${extra}
'';
serviceConfig = {