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Merge pull request #72080 from Infinisil/znapzend-improvements

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Znapzend improvements
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Linus Heckemann 2019-10-28 09:43:49 +01:00 committed by GitHub
commit e7a6123a07
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1 changed files with 28 additions and 0 deletions
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28
nixos/modules/services/backup/znapzend.nix
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@ -34,6 +34,8 @@ let
description = "string of the form number{b|k|M|G}";
};
enabledFeatures = concatLists (mapAttrsToList (name: enabled: optional enabled name) cfg.features);
# Type for a string that must contain certain other strings (the list parameter).
# Note that these would need regex escaping.
stringContainingStrings = list: let
@ -354,6 +356,22 @@ in
'';
default = false;
};
features.recvu = mkEnableOption ''
recvu feature which uses <literal>-u</literal> on the receiving end to keep the destination
filesystem unmounted.
'';
features.compressed = mkEnableOption ''
compressed feature which adds the options <literal>-Lce</literal> to
the <command>zfs send</command> command. When this is enabled, make
sure that both the sending and receiving pool have the same relevant
features enabled. Using <literal>-c</literal> will skip unneccessary
decompress-compress stages, <literal>-L</literal> is for large block
support and -e is for embedded data support. see
<citerefentry><refentrytitle>znapzend</refentrytitle><manvolnum>1</manvolnum></citerefentry>
and <citerefentry><refentrytitle>zfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>
for more info.
'';
};
};
@ -381,12 +399,22 @@ in
'';
serviceConfig = {
# znapzendzetup --import apparently tries to connect to the backup
# host 3 times with a timeout of 30 seconds, leading to a startup
# delay of >90s when the host is down, which is just above the default
# service timeout of 90 seconds. Increase the timeout so it doesn't
# make the service fail in that case.
TimeoutStartSec = 180;
# Needs to have write access to ZFS
User = "root";
ExecStart = let
args = concatStringsSep " " [
"--logto=${cfg.logTo}"
"--loglevel=${cfg.logLevel}"
(optionalString cfg.noDestroy "--nodestroy")
(optionalString cfg.autoCreation "--autoCreation")
(optionalString (enabledFeatures != [])
"--features=${concatStringsSep "," enabledFeatures}")
]; in "${pkgs.znapzend}/bin/znapzend ${args}";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
Restart = "on-failure";