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Support changing the number of datasets to keep in rolling_datasets

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Signed-off-by: magic_rb <richard@brezak.sk>
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magic_rb 2023-10-07 22:42:14 +02:00
parent 85db381a7e
commit 52a6d7d312
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1 changed files with 3 additions and 2 deletions
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5
overlays/rolling_datasets/bin/roll_dataset
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@ -8,6 +8,7 @@ if [[ "$#" != 3 ]] ; then
fi
dataset="$1"
to_keep="$2"
generation="$(zfs get :generation "$dataset" -H -o value)"
generation="$(("$generation" + 1))"
@ -18,8 +19,8 @@ zfs rollback "$dataset@blank" && echo "rollback complete"
while IFS="\n" read gen
do
printf "$gen < $(("$generation" - 10)) => "
if [ "$gen" -lt "$(("$generation" - 10))" ]; then
printf "$gen < $(("$generation" - "$to_keep")) => "
if [ "$gen" -lt "$(("$generation" - "$to_keep"))" ]; then
zfs destroy -r "$dataset/$gen"
echo "destroyed"
else