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restic: Make explicit sync only happen after restore #796

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Jul 12, 2023
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restic: Make explicit sync only happen after restore #796

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24 changes: 12 additions & 12 deletions mover-restic/entry.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -162,14 +162,14 @@ function reverse_array() {
}

################################################################
# Selects the first restic snapshot available for the
# given constraints. If RESTORE_AS_OF is defined, then
# Selects the first restic snapshot available for the
# given constraints. If RESTORE_AS_OF is defined, then
# only snapshots that were created prior to it are considered.
# If SELECT_PREVIOUS is defined, then the n-th snapshot
# is selected under the matching criteria.
# If a snapshot satisfying the conditions is found, then its ID
# If SELECT_PREVIOUS is defined, then the n-th snapshot
# is selected under the matching criteria.
# If a snapshot satisfying the conditions is found, then its ID
# is returned.
#
#
# Globals:
# SELECT_PREVIOUS
# RESTORE_AS_OF
Expand All @@ -186,7 +186,7 @@ function select_restic_snapshot_to_restore() {
local snapshot_id
local snapshot_ts
local trimmed_timestamp
local snapshot_epoch
local snapshot_epoch

# go through the timestamps received from restic
IFS=$'\n'
Expand All @@ -200,15 +200,15 @@ function select_restic_snapshot_to_restore() {
epochs_to_snapshots[${snapshot_epoch}]="${snapshot_id}"
done

# reverse sorted epochs so the most recent epoch is first
# reverse sorted epochs so the most recent epoch is first
reverse_array epochs

local -i offset=0
local target_epoch
if [[ -n ${RESTORE_AS_OF} ]]; then
# move to the position of the satisfying epoch
target_epoch=$(get_epoch_from_timestamp "${RESTORE_AS_OF}")
while ((offset < ${#epochs[@]})); do
while ((offset < ${#epochs[@]})); do
if ((${epochs[${offset}]} <= target_epoch)); then
break
fi
Expand All @@ -230,7 +230,7 @@ function select_restic_snapshot_to_restore() {


#######################################
# Restores from a selected snapshot if
# Restores from a selected snapshot if
# RESTORE_AS_OF is provided, otherwise
# restores from the latest restic snapshot
# Globals:
Expand All @@ -245,7 +245,7 @@ function do_restore {
# restore from specific snapshot specified by timestamp, or latest
local snapshot_id
snapshot_id=$(select_restic_snapshot_to_restore)
if [[ -z ${snapshot_id} ]]; then
if [[ -z ${snapshot_id} ]]; then
echo "No eligible snapshots found"
else
pushd "${DATA_DIR}"
Expand Down Expand Up @@ -282,14 +282,14 @@ for op in "$@"; do
;;
"restore")
do_restore
sync
;;
*)
error 2 "unknown operation: $op"
;;
esac
done
echo "Restic completed in $(( SECONDS - START_TIME ))s"
sync
echo "=== Done ==="
# sleep forever so that the containers logs can be inspected
# sleep 9999999