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dsnap-sync: run_finalize() - cleanup handling of metadata tagging

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Ralf Zerres
2018-06-05 11:55:33 +02:00
parent 3e9fefbd91
commit b39f4b8b1e
1 changed files with 41 additions and 29 deletions
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70
src/bin/dsnap-sync
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@@ -947,7 +947,7 @@ run_finalize () {
snapper_target_config=$(eval echo \$snapper_target_config_$i)
snapper_target_snapshot=$(eval echo \$snapper_target_snapshot_$i)
# It's important not to change the values of the key/value pairs ($userdata)
# It's important not to change the values of the snapper key/value pairs ($userdata)
# which is stored in snappers info.xml file of the source snapshot.
# This is how we find the parent.
@@ -958,41 +958,44 @@ run_finalize () {
target_userdata="subvolid=$src_subvolid, uuid=$src_uuid, host=$src_host"
# Tag new snapshots key/value parameter
if [ "$verbose" ]; then
printf "Tagging snapper metadata for config '%s' on source.\n" "$selected_config"
#fi
fi
if [ ! "$dryrun" ]; then
# source snapshot
if [ "$verbose" ]; then
printf "Tagging snapper metadata on source for configuration '%s' ...\n" "$selected_config"
fi
cmd="snapper --verbose --config \"$selected_config\" modify --description \"$snap_description_synced\" --userdata \"$userdata\" \"$snapper_new_id\""
ret=$(eval $cmd)
#printf "return: '%s'\n" "$ret"
sync
# target snapshot
if [ "$verbose" ]; then
printf "Tagging snapper metadata on target for configuration '%s' ...\n" "$selected_config"
fi
# 1) wait for target snapshot to show up in snapper list
# find "$snapper_new_id" -> marked as "$snap_descrition_running"
# 2) toggle metadata -> mark as "$snap_description_finished", reference "$target_userdata" (subvolid, uuid, host)
# !!! ugly hack !!!: wait for snapper to list target snapshot in database.
# Problem: how to trigger that database is synced? -> a feature request is send to snapper upstream source
# Solution: right now, it is no-deterministic, when the entry in the listing will show up .... wait max 10 min ...
ii=1
ii_max=20
cmd="snapper --verbose --config \"$snapper_target_config\" list --type single | awk '/'\"$snap_description_running\"'/' | awk -F '|' '\$1 == "$snapper_new_id" {print \$1}'"
# !!! ugly hack !!!: wait for snapper to list target snapshot in database. how to trigger database resync?
# it is not deterministic, when the entry in the listing will show up .... for now, wait max 10 min ...
cmd="$ssh snapper --verbose --config $snapper_target_config list --type single | awk ' \"$snap_description_running\" ' | awk -F '|' ' \$1 == "$snapper_new_id" {print \$1} ' "
if [ "$verbose" ]; then
printf "Identify snapper id '%s' on target for configuration '%s' ...\n" "$snapper_new_id" "$snapper_config"
fi
while [ "$ii" -le "$ii_max" ]; do
if [ -n "$remote" ]; then
ret=$($ssh $cmd)
else
ret=$(eval $cmd)
# WIP: verbose
if [ "$verbose" ]; then
printf "calling: '%s'\n" "$cmd"
fi
#printf "return: '%s'\n" "$ret"
ret=$(eval $cmd)
printf "return: '%s'\n" "$ret"
if [ -n "$ret" ]; then
if [ "$ret" -eq "$snapper_new_id" ]; then
cmd="snapper --verbose --config \"$snapper_target_config\" modify --description \"$snap_description_finished\" --userdata \"$target_userdata\" \"$snapper_new_id\""
if [ -n "$remote" ]; then
ret=$($ssh "$cmd")
else
ret=$(eval $cmd)
cmd="$ssh snapper --verbose --config \"$snapper_target_config\" modify --description \"$snap_description_finished\" --userdata \"$target_userdata\" \"$snapper_new_id\""
# WIP: verbose
if [ "$verbose" ]; then
printf "Update metadata for snapper id '%s' on target for configuration '%s' ...\n" "$snapper_new_id" "$snapper_config"
printf "calling: '%s'\n" "$cmd"
fi
#printf "return: '%s'\n" "$ret"
ret=$(eval $cmd)
printf "return: '%s'\n" "$ret"
break
fi
fi
@@ -1002,11 +1005,20 @@ run_finalize () {
sleep 30
ii=$(($ii + 1))
done
# source snapshot
cmd="snapper --verbose --config \"$selected_config\" modify --description \"$snap_description_synced\" --userdata '\"$userdata\"' \"$snapper_new_id\""
if [ "$verbose" ]; then
printf "Tagging snapper metadata on source for configuration '%s' ...\n" "$selected_config"
printf "calling: '%s'\n" "$cmd"
fi
eval $cmd
sync
else
cmd="snapper --verbose --config $selected_config modify --description $snap_description_synced --userdata $userdata $snapper_new_id"
printf "dryrun: %s\n" "$cmd"
cmd="$ssh snapper --verbose --config $snapper_target_config modify -description $snap_description_finished --userdata $target_userdata $snapper_new_id"
printf "dryrun: %s\n" "$cmd"
cmd="snapper --verbose --config $selected_config modify --description $snap_description_synced --userdata $userdata $snapper_new_id"
printf "dryrun: %s\n" "$cmd"
fi
# Cleanup synced source snapshots