destinations=""
# Default settings, can be overwritten in backup-script.conf:
-conf_d="/etc/backup-script.d"
+[ -d "/usr/local/etc/backup-script.d" ] \
+ && conf_d="/usr/local/etc/backup-script.d" \
+ || conf_d="/etc/backup-script.d"
pre_exec=""
post_exec=""
default_source_root="/"
-default_target=""
+default_target="/var/backups"
default_user="root"
default_ssh_args_add=""
default_rsync_args_add=""
echo
echo "When no <system> is given, all defined systems are used."
echo
+ echo "Configuration file is \"$conf\","
+ echo "using \"$conf_d\" as configuration directory."
+ echo
exit 1
}
CleanUp
echo -n "Aborted: "; date
echo
+ sleep 3
exit 9
}
"btrfs")
btrfs subvolume create "$volume" >/dev/null || return 1
;;
+ "zfs")
+ zfs create "$(echo "$volume" | cut -c2-)" || return 1
+ ;;
*)
echo "CreateSubvolume: Incompatible FS type \"$fs\" on \"$dir\"!"
return 9
local snapshot="$3"
local dir
local fs
+ local link_name
dir=$(dirname "source")
fs=$(GetFS "$source")
"btrfs")
btrfs subvolume snapshot "$source" "$snapshot" >/dev/null || return 1
;;
+ "zfs")
+ zfs snapshot "$snapshot" || return 1
+ link_name="$(echo "$snapshot" | cut -d@ -f2-)"
+ ln -s \
+ "$volume/.zfs/snapshot/$link_name" \
+ "$(dirname "$volume")/$link_name"
+ ;;
*)
echo "CloneSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
return 9
"btrfs")
mv "$source" "$target" || return 1
;;
+ "zfs")
+ zfs rename \
+ "$(echo "$source" | cut -c2-)" \
+ "$(echo "$target" | cut -c2-)" \
+ || return 1
+ ;;
*)
echo "RenameSubvolume: Incompatible FS type \"$fs\" on \"$source\"!"
return 9
DeleteSubvolume() {
local volume="$1"
local fs
+ local id
+ local snapshot
- fs=$(GetFS "$source")
+ fs=$(GetFS "$volume")
case "$fs" in
"btrfs")
btrfs subvolume delete "$volume" >/dev/null || return 1
;;
+ "zfs")
+ id="$(basename "$volume")"
+ if [ -h "$volume" ]; then
+ snapshot="$(dirname "$volume")/current@$id"
+ else
+ snapshot="$volume"
+ fi
+ zfs destroy -r "$(echo "$snapshot" | cut -c2-)" >/dev/null || return 1
+ [ -h "$volume" ] && rm "$volume"
+ ;;
*)
echo "DeleteSubvolume: Incompatible FS type \"$fs\" on \"$volume\"!"
return 9
return 0
}
+Initialize_Last_SysTarget_Snapshot() {
+ sys_target="$1"
+ unset last
+ unset snapshot
+
+ fs=$(GetFS "$sys_target")
+ case "$fs" in
+ "btrfs")
+ # Search directory of last generation, if any
+ last=$(ls -1d "$sys_target"/[0-9]* 2>/dev/null | sort -r | head -n1)
+ if [ -n "$last" ]; then
+ if [ ! -d "$last" ]; then
+ echo "Last snapshot \"$last\" seems not to be a directory!? \"$system\" skipped!"
+ echo
+ return 1
+ fi
+ fi
+ sys_target="$sys_target/$(date +%Y%m%d-%H%M%S)"
+ snapshot="$sys_target"
+ ;;
+ "zfs")
+ # On ZFS, the last generation is always named "current"
+ if [ -e "$sys_target/current" ]; then
+ last="$sys_target/current"
+ if [ "$(uname)" = "Linux" ]; then
+ date=$(LC_ALL=C stat "$1" | grep "^Modify: " \
+ | cut -d':' -f2- | cut -d. -f1)
+ else
+ date=$(LC_ALL=C stat -f "%Sc" "$1")
+ fi
+ date=$(echo "$date" | sed -e's/^ //g' -e 's/[-:]//g' -e 's/ /-/g')
+
+ else
+ last=""
+ date="$(date +%Y%m%d-%H%M%S)"
+ fi
+ snapshot="$(echo "$sys_target/current" | cut -c2-)@$date"
+ sys_target="$sys_target/current"
+ ;;
+ *)
+ echo "Initialize_Last_SysTarget_Snapshot: Incompatible FS type \"$fs\" on \"$sys_target\"!"
+ return 1
+ esac
+ return 0
+}
+
+# Search configuration file (last one is used as default!)
+for conf in \
+ "/usr/local/etc/backup-script.conf" \
+ "/etc/backup-script.conf" \
+ "${conf_d}/backup-script.conf" \
+ "/usr/local/etc/backup-script.conf" \
+; do
+ [ -r "$conf" ] && break
+done
+
while [ $# -gt 0 ]; do
case "$1" in
"-n"|"--dry-run")
echo -n "Started: "; date
-for conf in "/etc/backup-script.conf" "${conf_d}/backup-script.conf"; do
- if [ -r "$conf" ]; then
- echo "Reading configuration: \"$conf\" ..."
- source "$conf"
- fi
-done
+# Read in configuration file
+if [ -r "$conf" ]; then
+ echo "Reading configuration: \"$conf\" ..."
+ source "$conf"
+else
+ echo "No configuration file found, using defaults."
+fi
echo
if [ $# -ge 1 ]; then
job_pre_exec="$default_job_pre_exec"
job_post_exec="$default_job_post_exec"
+ # Compatibility with backup-pull(1) script: Save global values ...
+ pre_exec_saved="$pre_exec"
+ post_exec_saved="$post_exec"
+
+ # Compatibility with backup-pull(1) script: Set defaults
+ unset host
+ unset source
+ unset pre_exec
+ unset post_exec
+
# Read in system configuration file
source "$f"
+ # Compatibility with backup-pull(1) script: Fix up configuration
+ [ "$system" = "$fname" -a -n "$host" ] \
+ && system="$host"
+ [ "$source_root" = "$default_source_root" -a -n "$source" ] \
+ && source_root="$source"
+ [ -z "$job_pre_exec" -a -n "$pre_exec" ] \
+ && job_pre_exec="$pre_exec"
+ [ -z "$job_post_exec" -a -n "$post_exec" ] \
+ && job_post_exec="$post_exec"
+
+ # Compatibility with backup-pull(1) script: Restore global values ...
+ pre_exec="$pre_exec_saved"
+ post_exec="$post_exec_saved"
+
# Validate configuration
- [ "$system" = "localhost" -o "$system" = "127.0.0.1" ] && local=1
+ if [ "$system" = "localhost" -o "$system" = "127.0.0.1" ]; then
+ # Local system
+ local=1
+ compress=0
+ fi
+
+ # Make sure "source" ends with a slash ("/")
+ case "$source" in
+ "*/")
+ ;;
+ "*")
+ source="$source/"
+ esac
+
+ # Make sure "target" DOESN'T end with a slash ("/")
+ case "$target" in
+ "*/")
+ target=$( echo "$target" | sed -e 's/\/$//g' )
+ ;;
+ esac
[ "$system" = "$fname" ] \
&& systxt="\"$system\"" \
sys_target="$target/$fname"
sys_root="$sys_target"
- if [ "$DRYRUN" -eq 0 ]; then
- mkdir -p "$sys_target" >/dev/null 2>&1
+ if [ "$DRYRUN" -eq 0 -a ! -e "$sys_target" ]; then
+ if [ $generations -gt 0 ]; then
+ CreateSubvolume "$sys_target"
+ else
+ mkdir -p "$sys_target"
+ fi
if [ $? -ne 0 ]; then
echo "Can't create \"$sys_target\"!? \"$system\" skipped!"
echo; continue
echo; continue
fi
- # Search directory of last generation, if any
- last=$(ls -1d "$sys_target"/[0-9]* 2>/dev/null | sort -r | head -n1)
- if [ -n "$last" ]; then
- if [ ! -d "$last" ]; then
- echo "Last snapshot \"$last\" seems not to be a directory!? \"$system\" skipped!"
- echo; continue
- fi
- fi
- sys_target="$sys_target/$(date +%Y%m%d-%H%M%S)"
- snapshot="$sys_target"
+ Initialize_Last_SysTarget_Snapshot "$sys_target" || continue
if [ -n "$last" -a ! -e "$last/.stamp" ]; then
# Old backup directory without "stamp file", continue
fi
echo "Created new snapshot in \"$snapshot\"."
else
- echo " *** Trial run, not creating new snapshot in \"$sys_target\"!"
+ echo " *** Trial run, not creating new snapshot in \"$snapshot\"!"
fi
else
# No old backup found, create new subvolume
projects / backup-script.git / blobdiff