{ pkgs, lib, hostName, ... }:
with builtins;
{
- # syncoid --create-bookmark --no-privilege-elevation --no-sync-snap --recvoptions '' --sendoptions raw --recursive oignon/home off2/julm/backup/oignon/home
- # zfs list -t snapshot -o name | grep ^oignon/home | while read -r snap; do zfs bookmark "$snap" "${snap//@/#}"; done
- # Take regular snapshots, and prune old ones
services.sanoid = {
enable = true;
extraArgs = [ "--verbose" ];
datasets = {
- "${hostName}/home" = {
+ "${hostName}/root/home/mo" = {
autosnap = true;
autoprune = true;
- hourly = 12;
- daily = 3;
+ hourly = 0;
+ daily = 15;
monthly = 0;
yearly = 0;
recursive = true;
};
- "${hostName}/var" = {
+ "${hostName}/root/home/mo/.cache" = {
+ autosnap = false;
+ };
+ "${hostName}/root/home/mo/.mozilla" = {
autosnap = true;
autoprune = true;
- hourly = 12;
- daily = 1;
- monthly = 0;
- yearly = 0;
- recursive = true;
+ daily = 3;
};
- "off2/julm/backup/oignon" = {
- autosnap = false;
+ "${hostName}/root/home/mo/.thunderbird" = {
+ autosnap = true;
autoprune = true;
- hourly = 0;
+ hourly = 12;
daily = 7;
- monthly = 3;
- yearly = 0;
- recursive = true;
+ };
+ "${hostName}/root/home/mo/Documents" = {
+ autosnap = true;
+ autoprune = true;
+ hourly = 12;
+ daily = 31;
+ };
+ "${hostName}/root/home/mo/Telechargements" = {
+ autosnap = false;
};
};
};
- # Trigger backups when disks are plugged
- services.udev.extraRules = ''
- ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd*", ENV{ID_SERIAL}=="WDC_WD10JPVT-22A1YT0_WD-WX21AC2F3987", ENV{SYSTEMD_WANTS}+="zfs-local-backup-home@WD10JPVT.service", ENV{SYSTEMD_ALIAS}="/sys/subsystem/usb/WD10JPVT"
- # See https://github.com/systemd/systemd/issues/7587#issuecomment-381428545
- ACTION=="remove", SUBSYSTEM=="block", KERNEL=="sd*", ENV{ID_SERIAL}=="WDC_WD10JPVT-22A1YT0_WD-WX21AC2F3987", TAG+="systemd"
- '';
- # Show what's happening to the user
- systemd.services."zfs-term@" = {
- description = "ZFS terminal for: %I";
- unitConfig.StopWhenUnneeded = false;
- environment.DISPLAY = ":0";
- environment.XAUTHORITY = "/home/julm/.Xauthority";
- after = [ "graphical.target" ];
- bindsTo = [ "sys-subsystem-usb-%i.device" ];
- serviceConfig = {
- Type = "simple";
- PrivateTmp = true;
- ExecStart = pkgs.writeShellScript "zfs-force-import" ''
- DESTPOOL=$1
- set -eux
- ${pkgs.xterm}/bin/xterm -fg white -bg black -fa Monospace -fs 6 \
- -title "ZFS backup to: $DESTPOOL" -e "journalctl -f -o short \
- -u zfs-force-import@$DESTPOOL \
- -u zfs-local-backup-home@$DESTPOOL"
- '' + " %I";
- };
- };
- # Force zpool import, even if the disk has not been exported, or has been imported on another computer
- systemd.services."zfs-force-import@" = {
- description = "ZFS force import: %I";
- unitConfig = {
- StartLimitBurst = 5;
- StartLimitInterval = 200;
- StopWhenUnneeded = true;
- };
- wants = [ "zfs-term@%i.service" ];
- bindsTo = [ "sys-subsystem-usb-%i.device" ];
- path = lib.mkBefore [ "/run/booted-system/sw" ];
- serviceConfig = {
- Type = "oneshot";
- RemainAfterExit = true;
- PrivateTmp = true;
- SyslogIdentifier = "zfs-force-import@%i";
- Restart = "on-failure";
- ExecStart = pkgs.writeShellScript "zfs-force-import" ''
- DESTPOOL=$1
- set -eux
- # Import the zpool, using stable paths
- zpool import -d /dev/disk/by-id/ || true
- zpool import -lFd /dev/disk/by-id/ "$DESTPOOL" ||
- zpool reopen "$DESTPOOL" ||
- zpool import -f -d /dev/disk/by-id/ "$DESTPOOL" ||
- zpool clear -nFX "$DESTPOOL"
- '' + " %I";
- };
- };
- # Prune old snapshots on the backup and send new ones
- systemd.services."zfs-local-backup-home@" = {
- description = "ZFS backup home, on: %I";
- wants = [ "zfs-term@%i.service" ];
- after = [ "zfs-force-import@%i.service" ];
- requires = [ "zfs-force-import@%i.service" ];
- bindsTo = [ "sys-subsystem-usb-%i.device" ];
- path = lib.mkBefore [ "/run/booted-system/sw" ];
- serviceConfig = rec {
- Type = "oneshot";
- PrivateTmp = true;
- CacheDirectory = [ "zfs-usb-backup/%I" ];
- RuntimeDirectory = [ "zfs-usb-backup/%I" ];
- User = "julm";
- Group = "users";
- SyslogIdentifier = "zfs-local-backup-home@%i";
- ExecStartPre = "+" + pkgs.writeShellScript "zfs-local-backup-home-startPre" ''
- DESTPOOL=$1
- set -eux
- if zpool status "$DESTPOOL"; then
- zfs allow ${User} bookmark,hold,mount,send ${hostName}/home
- zfs allow ${User} bookmark,create,destroy,load-key,mount,mountpoint,receive,rollback,snapshot "$DESTPOOL"/${User}
- zpool scrub -p "$DESTPOOL" || true
- fi
- '' + " %I";
- ExecStart = pkgs.writeShellScript "zfs-local-backup-home" ''
- set -eu
- DESTPOOL=$1
- # sanoid is quite conservative:
- # by setting hourly=24, a snapshot must be >24 hours old
- # and there must been >24 total hourly snapshots,
- # or nothing is pruned.
- install -D -m 400 /dev/stdin /tmp/sanoid/sanoid.conf <<EOF
- [template_remote]
- autoprune=true
- autosnap=false
- process_children_only=false
-
- [$DESTPOOL/${User}/backup/${hostName}/home]
- hourly=6
- daily=31
- monthly=3
- recursive=true
- use_template=remote
- EOF
- set -x
- ${pkgs.sanoid}/bin/sanoid \
- --cache-dir /var/cache/zfs-usb-backup/"$DESTPOOL" \
- --configdir /tmp/sanoid \
- --prune-snapshots \
- --run-dir /run/zfs-usb-backup/"$DESTPOOL" \
- --verbose
-
- for dataset in ${hostName}/home; do
- ${pkgs.sanoid}/bin/syncoid \
- --create-bookmark \
- --exclude "home/room" \
- --force-delete \
- --no-privilege-elevation \
- --no-sync-snap \
- --recursive \
- --recvoptions "" \
- --sendoptions raw \
- --skip-parent \
- "$dataset" \
- "$DESTPOOL"/${User}/backup/"$dataset"
- done
- '' + " %I";
- ExecStartPost = "+" + pkgs.writeShellScript "zfs-local-backup-home-startPost" ''
- DESTPOOL=$1
- set -eux
- # Only if the zpool still exists to avoid uninterruptible hanging
- if zpool status -v "$DESTPOOL"; then
- # Scrub the zpool 1 minute (in the background)
- zpool scrub "$DESTPOOL"
- sleep 60
- fi
- while zpool status -v "$DESTPOOL"; do
- zpool scrub -p "$DESTPOOL" || true
- sleep 20
- # Export the zpool (to avoid a forced import later on)
- zpool export "$DESTPOOL" || true
- done
- systemctl --no-block stop zfs-term@"$DESTPOOL"
- '' + " %I";
- };
- };
- programs.bash.interactiveShellInit = ''
- mount-zfs-backup () {
- (
- set -eux
- zpool="$1"
- zpool status "$zpool" 2>/dev/null ||
- sudo zpool import -d /dev/disk/by-id/ "$zpool"
- trap "sudo zpool export $zpool" EXIT
- zfs list -rH -t filesystem -o mounted,mountpoint,name "$zpool"/"$USER"/backup |
- grep "^no\\s*/" | cut -f 3 | xargs -ortL1 sudo zfs mount -Olv || true
- ${pkgs.mate.caja-with-extensions}/bin/caja --browser /mnt/"$zpool"/"$USER"/backup
- )
- }
- '';
- programs.bash.shellAliases = {
- mount-backup-WD10JPVT = "mount-zfs-backup WD10JPVT";
- };
}
sourcephile / git / julm / julm-nix.git / blobdiff