-{ pkgs, lib, config, hostName, ... }:
+{ 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 = {
- "${hostName}/home" = {
- autosnap = true;
- autoprune = true;
- hourly = 12;
- daily = 3;
- monthly = 0;
- yearly = 0;
- recursive = true;
+ # syncoid --create-bookmark --no-privilege-elevation --no-sync-snap --recvoptions '' --sendoptions raw --recursive oignon/home off2/julm/backup/oignon/home
+ # zfs list -t snapshot -o name | grep ^oignon/home | while read -r snap; do zfs bookmark "$snap" "${snap//@/#}"; done
+ # Take regular snapshots, and prune old ones
+ services.sanoid = {
+ enable = true;
+ extraArgs = [ "--verbose" ];
+ datasets = {
+ "${hostName}/home" = {
+ autosnap = true;
+ autoprune = true;
+ hourly = 12;
+ daily = 3;
+ monthly = 0;
+ yearly = 0;
+ recursive = true;
+ };
+ "${hostName}/var" = {
+ autosnap = true;
+ autoprune = true;
+ hourly = 12;
+ daily = 1;
+ monthly = 0;
+ yearly = 0;
+ recursive = true;
+ };
+ "off2/julm/backup/oignon" = {
+ autosnap = false;
+ autoprune = true;
+ hourly = 0;
+ daily = 7;
+ monthly = 3;
+ yearly = 0;
+ recursive = true;
+ };
};
- "${hostName}/var" = {
- autosnap = true;
- autoprune = true;
- hourly = 12;
- daily = 1;
- monthly = 0;
- yearly = 0;
- recursive = true;
- };
- "off2/julm/backup/oignon" = {
- autosnap = false;
- autoprune = true;
- hourly = 0;
- daily = 7;
- monthly = 3;
- yearly = 0;
- recursive = true;
- };
- };
-};
-# 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;
+ # 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";
+ };
};
- 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";
+ # 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
+ # 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/"$DESTPOOL" \
- --verbose
+ [$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
+ 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@"$DESTPOOL"
+ '' + " %I";
+ };
+ };
+ programs.bash.interactiveShellInit = ''
+ mount-zfs-backup () {
+ (
set -eux
- # Only if the zpool still exists to avoid uninterruptible hanging
- if zpool status -v "$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";
+ 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";
};
-};
-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";
-};
}