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zfs.autoScrub service: init

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Franz Pletz 2017-03-02 17:13:54 +01:00
parent 98523861f6
commit 7566b36259
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GPG key ID: 846FDED7792617B4
1 changed files with 61 additions and 2 deletions
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63
nixos/modules/tasks/filesystems/zfs.nix
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@ -13,12 +13,14 @@ let
cfgZfs = config.boot.zfs;
cfgSnapshots = config.services.zfs.autoSnapshot;
cfgSnapFlags = cfgSnapshots.flags;
cfgScrub = config.services.zfs.autoScrub;
inInitrd = any (fs: fs == "zfs") config.boot.initrd.supportedFilesystems;
inSystem = any (fs: fs == "zfs") config.boot.supportedFilesystems;
enableAutoSnapshots = cfgSnapshots.enable;
enableZfs = inInitrd || inSystem || enableAutoSnapshots;
enableAutoScrub = cfgScrub.enable;
enableZfs = inInitrd || inSystem || enableAutoSnapshots || enableAutoScrub;
kernel = config.boot.kernelPackages;
@ -217,6 +219,37 @@ in
'';
};
};
services.zfs.autoScrub = {
enable = mkOption {
default = false;
type = types.bool;
description = ''
Enables periodic scrubbing of ZFS pools.
'';
};
interval = mkOption {
default = "Sun, 02:00";
type = types.str;
example = "daily";
description = ''
Systemd calendar expression when to scrub ZFS pools. See
<citerefentry><refentrytitle>systemd.time</refentrytitle>
<manvolnum>5</manvolnum></citerefentry>.
'';
};
pools = mkOption {
default = [];
type = types.listOf types.str;
example = [ "tank" ];
description = ''
List of ZFS pools to periodically scrub. If empty, all pools
will be scrubbed.
'';
};
};
};
###### implementation
@ -282,7 +315,7 @@ in
zfsSupport = true;
};
environment.etc."zfs/zed.d".source = "${packages.zfsUser}/etc/zfs/zed.d/*";
environment.etc."zfs/zed.d".source = "${packages.zfsUser}/etc/zfs/zed.d/";
system.fsPackages = [ packages.zfsUser ]; # XXX: needed? zfs doesn't have (need) a fsck
environment.systemPackages = [ packages.zfsUser ]
@ -391,5 +424,31 @@ in
};
}) snapshotNames);
})
(mkIf enableAutoScrub {
systemd.services.zfs-scrub = {
description = "ZFS pools scrubbing";
after = [ "zfs-import.target" ];
serviceConfig = {
Type = "oneshot";
};
script = ''
${packages.zfsUser}/bin/zpool scrub ${
if cfgScrub.pools != [] then
(concatStringsSep " " cfgScrub.pools)
else
"$(${packages.zfsUser}/bin/zpool list -H -o name)"
}
'';
};
systemd.timers.zfs-scrub = {
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = cfgScrub.interval;
Persistent = "yes";
};
};
})
];
}