packer-builds

commit 0b02230cc865b1ba320d57cfaf4138c169bdf903
parent 3dac0a6ed1c8af0a7098c31aed5e2c32492b61fa
Author: Andreas Gruhler <agruhl@gmx.ch>
Date:   Sun, 23 Feb 2025 08:27:24 +0100

feat(borg): readonly files during backup

Diffstat:
M
scripts/borg-backup.sh
 | 
8
++++++--

1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/scripts/borg-backup.sh b/scripts/borg-backup.sh
@@ -53,7 +53,6 @@ cat <<EOF > "$PATTERNSFILE"
 P sh
 # A root path starts with the prefix R, followed by a path
 R /host-nfs
-R /host-srv
 EOF
 
 # Install systemd service unit
@@ -64,8 +63,13 @@ Description=Create a backup with borg
 [Service]
 Type=oneshot
 EnvironmentFile=/root/.config/borg/config
+# prevent file modifications during backup
+# borg error "file changed while we read it!: backup error"
+ExecStart=/usr/bin/chattr -R +i /host-nfs
 ExecStart=/usr/local/bin/borg create -v --stats --compression lz4 {hostname}-{now:%%Y%%m%%dT%%H%%M} --patterns-from "$PATTERNSFILE" --exclude-caches --chunker-params fixed,4096
 ExecStart=/usr/local/bin/borg prune -v --list --match-archives '{hostname}-*' --keep-daily=7 --keep-weekly=4 --keep-monthly=12
+# unlock
+ExecStart=/usr/bin/chattr -R -i /host-nfs
 
 [Install]
 WantedBy=default.target
@@ -78,7 +82,7 @@ Description=Create a backup with borg
 
 [Timer]
 Unit=borg-backup.service
-OnCalendar=*-*-* 11:03:00
+OnCalendar=*-*-* 01:03:00
 
 [Install]
 WantedBy=timers.target