diff options
author | Jonathan Davies <jpds@protonmail.com> | 2024-02-09 15:03:47 +0000 |
---|---|---|
committer | Jonathan Davies <jpds@protonmail.com> | 2024-05-03 15:01:53 +0100 |
commit | 8e0e9bdee874c3a3cdb50100f93f99c98ac7a7c6 (patch) | |
tree | ef6ffdad6707792afcaf50404ddb14169f689407 /nixos | |
parent | b3741ce0ae8f1703bce69a6622d96f1416c31b4e (diff) |
nixos/zfs: Added a randomizedDelaySec option to ZFS autoscrub/trim timers
Allows operators to space out these IO operations across a fleet of machines, rather than have them all happen at the same time.
Diffstat (limited to 'nixos')
-rw-r--r-- | nixos/modules/tasks/filesystems/zfs.nix | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/nixos/modules/tasks/filesystems/zfs.nix b/nixos/modules/tasks/filesystems/zfs.nix index 2c749d45d7a15..cf8ad94eea135 100644 --- a/nixos/modules/tasks/filesystems/zfs.nix +++ b/nixos/modules/tasks/filesystems/zfs.nix @@ -441,6 +441,18 @@ in {manpage}`systemd.time(7)`. ''; }; + + randomizedDelaySec = mkOption { + default = "6h"; + type = types.str; + example = "12h"; + description = '' + Add a randomized delay before each ZFS trim. + The delay will be chosen between zero and this value. + This value must be a time span in the format specified by + {manpage}`systemd.time(7)` + ''; + }; }; services.zfs.autoScrub = { @@ -456,6 +468,18 @@ in ''; }; + randomizedDelaySec = mkOption { + default = "6h"; + type = types.str; + example = "12h"; + description = '' + Add a randomized delay before each ZFS autoscrub. + The delay will be chosen between zero and this value. + This value must be a time span in the format specified by + {manpage}`systemd.time(7)` + ''; + }; + pools = mkOption { default = []; type = types.listOf types.str; @@ -862,6 +886,7 @@ in timerConfig = { OnCalendar = cfgScrub.interval; Persistent = "yes"; + RandomizedDelaySec = cfgScrub.randomizedDelaySec; }; }; }) @@ -879,7 +904,10 @@ in serviceConfig.ExecStart = "${pkgs.runtimeShell} -c 'for pool in $(zpool list -H -o name); do zpool trim $pool; done || true' "; }; - systemd.timers.zpool-trim.timerConfig.Persistent = "yes"; + systemd.timers.zpool-trim.timerConfig = { + Persistent = "yes"; + RandomizedDelaySec = cfgTrim.randomizedDelaySec; + }; }) ]; } |