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krebs.backup: inject dst_path into dst shell

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tv 2016-04-17 03:51:55 +02:00
parent 904d037bd7
commit 453384b60b
1 changed files with 13 additions and 14 deletions
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27
krebs/3modules/backup.nix
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@ -163,41 +163,40 @@ let
"$src/" \
"$dst/.partial"
dst_exec env \
dst_path="$dst_path" \
start_date="$start_date" \
flock -n "$dst_path" \
/bin/sh < ${toFile "backup.${plan.name}.take-snapshots" ''
set -efu
: $start_date
: $dst_path $start_date
dst=${shell.escape plan.dst.path}
mv "$dst/current" "$dst/.previous"
mv "$dst/.partial" "$dst/current"
rm -fR "$dst/.previous"
mv "$dst_path/current" "$dst_path/.previous"
mv "$dst_path/.partial" "$dst_path/current"
rm -fR "$dst_path/.previous"
echo >&2
snapshot() {(
: $ns $format $retain
name=$(date --date="@$start_date" +"$format")
if ! test -e "$dst/$ns/$name"; then
if ! test -e "$dst_path/$ns/$name"; then
echo >&2 "create snapshot: $ns/$name"
mkdir -m 0700 -p "$dst/$ns"
mkdir -m 0700 -p "$dst_path/$ns"
rsync >&2 \
-aAXF --delete \
--link-dest="$dst/current" \
"$dst/current/" \
"$dst/$ns/.partial.$name"
mv "$dst/$ns/.partial.$name" "$dst/$ns/$name"
--link-dest="$dst_path/current" \
"$dst_path/current/" \
"$dst_path/$ns/.partial.$name"
mv "$dst_path/$ns/.partial.$name" "$dst_path/$ns/$name"
echo >&2
fi
case $retain in
([0-9]*)
delete_from=$(($retain + 1))
ls -r "$dst/$ns" \
ls -r "$dst_path/$ns" \
| sed -n "$delete_from,\$p" \
| while read old_name; do
echo >&2 "delete snapshot: $ns/$old_name"
rm -fR "$dst/$ns/$old_name"
rm -fR "$dst_path/$ns/$old_name"
done
;;
(ALL)