rzerres/dsnap-sync
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snap-sync: itroduce parameter for snap-sync template

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- when creating a snapper structure on target system
  use the defined snap-sync template (default search-path /etc/snapper/config-templates)

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>
This commit is contained in:
Ralf Zerres
2018-01-17 18:22:15 +01:00
parent 36964526f8
commit bd10895634
1 changed files with 23 additions and 13 deletions
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36
bin/snap-sync
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@@ -59,6 +59,7 @@ selected_uuid='none'
selected_target='none' selected_target='none'
selected_subvol='none' selected_subvol='none'
snapper_snapshots=".snapshots" # hardcoded in snapper snapper_snapshots=".snapshots" # hardcoded in snapper
snapper_snapsync_template="snap-sync"
### ###
# functions # functions
@@ -217,7 +218,7 @@ get_answer_yes_no () {
} }
get_config(){ get_config(){
local config=${1:-/etc/snapper/config-templates/snap-sync} local config=${1:-/etc/snapper/config-templates/"$snapper_snapsync_template"}
local config_key=${2:-SUBVOLUME} local config_key=${2:-SUBVOLUME}
# IFS="=" # IFS="="
@@ -993,7 +994,7 @@ select_target_disk () {
} }
set_config(){ set_config(){
local config=${1:-/etc/snapper/config-templates/snap-sync} local config=${1:-/etc/snapper/config-templates/"$snapper_snapsync_template"}
local config_key=${2:-SUBVOLUME} local config_key=${2:-SUBVOLUME}
local config_value=${3:-/var/lib/snap-sync} local config_value=${3:-/var/lib/snap-sync}
@@ -1074,22 +1075,22 @@ verify_snapper_structure () {
# verify that we have a snapper compatible structure for selected config on target # verify that we have a snapper compatible structure for selected config on target
if $ssh [ ! -d $backup_root/$snapper_config ]; then if $ssh [ ! -d $backup_root/$snapper_config ]; then
if $ssh [ ! -f $SNAPPER_TEMPLATES/snap-sync ]; then if $ssh [ ! -f $SNAPPER_TEMPLATES/snap-sync ]; then
printf "A snapper template %s to configure the snapper subvolume %s is missing in %s.\n" "snap-sync" "$snapper_config" "$SNAPPER_TEMPLATES" printf "A snapper template %s to configure the snapper subvolume %s is missing in %s on %s.\n" "$snapper_snapsync_template" "$snapper_config" "$SNAPPER_TEMPLATES" "$remote_host"
printf "Did you miss to install the snap-sync's default snapper template?\n" printf "Did you miss to install the snap-sync's default snapper template on %s?\n" "$remote"
die "snapper template %s to configure the snapper subvolume %s is missing in %s.\n" "snap-sync" "$snapper_config" "$SNAPPER_TEMPLATES" die "snapper template %s to configure the snapper subvolume %s is missing in %s on %s.\n" "$snapper_snapsync_template" "$snapper_config" "$SNAPPER_TEMPLATES" "$remote_host"
fi fi
if [ ! "$dryrun" ]; then if [ ! "$dryrun" ]; then
if [ "$verbose" ]; then if [ "$verbose" ]; then
printf "Create new snapper capable subvolume in '%s' ...\n" "$backup_root/$snapper_config" printf "Create new snapper capable subvolume in '%s:%s' ...\n" "$remote_host" "$backup_root/$snapper_config"
fi fi
# notify if SUBVOLUME has changed # notify if SUBVOLUME has changed
create_config="btrfs subvolume create $backup_root/$snapper_config" create_config="btrfs subvolume create $backup_root/$snapper_config"
$ssh $create_config || die "Snapper structure for config %s to hold target snapshots could not be created in directory on %s.\n" "$snapper_config" "$backup_root" $ssh $create_config || die "Snapper structure for config %s to hold target snapshots could not be created in directory on %s on %s.\n" "$snapper_config" "$backup_root" "$remote_host"
if $ssh [ ! -f /etc/snapper/configs/$snapper_config ]; then if $ssh [ ! -f /etc/snapper/configs/$snapper_config ]; then
# snapper-logic will create $backup_root/$snapper_config/.snapshots # snapper-logic will create $backup_root/$snapper_config/.snapshots
$ssh snapper --config $snapper_config create-config --template snap-sync $backup_root/$snapper_config $ssh snapper create-config $snapper-config --template $snapper_snapsync_template $backup_root/$snapper_config
else else
# if changed, adapt targets SUBVOLUME in given config # if changed, adapt targets SUBVOLUME in given config
#get_config "/etc/snapper/configs/$snapper_config" "SUBVOLUME" #get_config "/etc/snapper/configs/$snapper_config" "SUBVOLUME"
@@ -1102,13 +1103,22 @@ verify_snapper_structure () {
fi fi
$ssh chmod 0700 $backup_root/$snapper_config $ssh chmod 0700 $backup_root/$snapper_config
sync sync
if $ssh [ ! -d $backup_root/$snapper_subvol ]; then
create_subvol="btrfs subvolume create $backup_root/$snapper_subvol"
if $ssh [ $create_subvol ]; then
if [ $verbose ]; then
printf "Created BTRFS subvolume %s.\n" "$backup_root/$snapper_subvol"
fi
else
die "Create BTRFS subvolume to hold snapshots on remote failed."
fi
fi
$ssh snapper --config $snapper_subvol create-config --template $snapper_snapsync_template $backup_root/$snapper_subvol
$ssh chmod 0700 $backup_root/$snapper_subvol
else else
printf "dryrun: Would create new snapper structure in '%s' ...\n" "$backup_root/$snapper_config" printf "dryrun: Would create new snapper structure in '%s:%s' ...\n" "$backup_root/$snapper_config"
printf "dryrun: Would create new snapper configuration from template %s ...\n" "$snapper_snapsync_template"
fi fi
create_subvol="btrfs subvolume create $backup_root/$snapper_subvol"
$ssh $create_subvol || die "BTRFS subvolume %s to hold snapshots for config %s could not be created in directory on %s.\n" "$snapper_subvol" "$snapper_config" "$backup_root"
$ssh snapper --config $snapper_subvol create-config --template snap-sync $backup_root/$snapper_subvol
$ssh chmod 0700 $backup_root/$snapper_subvol
else else
cmd="$ssh stat --format=%i $backup_root/$snapper_config" cmd="$ssh stat --format=%i $backup_root/$snapper_config"
if [ $(eval $cmd) -ne 256 ]; then if [ $(eval $cmd) -ne 256 ]; then