quico-os-setup/zfs-pacman-hook
1
0
Fork 0
Code Issues 3 Pull Requests Packages Projects Releases Wiki Activity

feat(script): Allow snapping only local datasets (#1)

Browse Source
This commit is contained in:
hygienic-books 2023-03-06 00:57:02 +01:00
parent 673fb15b46
commit 60b3a92abb
2 changed files with 39 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
pacman-zfs-snapshot.conf
View File

@ -15,3 +15,13 @@ snaps_trivial_suffix='trv'
snaps_important_suffix='imp'
pkgs_list_max_length='24'
# Hook will by default snapshot all datasets that have the property
# 'space.quico:auto-snapshot=true' set, even the ones that are not currently
# mounted and may belong to unrelated operating systems. Set
# snap_only_local_datasets='true' to limit snapshots to only those datasets
# that have aforementioned property and at the same time are currently
# mounted in your running OS. Currently mounted is defined as:
# findmnt --json --list --output 'fstype,source,target' | \
# jq --raw-output '.[][] | select(.fstype=="zfs") | .source'
snap_only_local_datasets='true'

29
pacman-zfs-snapshot.sh
View File

@ -23,6 +23,7 @@ if [[ ! "${snaps_important_keep}" ]]; then snaps_important_keep='5'; fi
if [[ ! "${snaps_trivial_suffix}" ]]; then snaps_trivial_suffix='trv'; fi
if [[ ! "${snaps_important_suffix}" ]]; then snaps_important_suffix='imp'; fi
if [[ ! "${pkgs_list_max_length}" ]]; then pkgs_list_max_length='24'; fi
if [[ ! "${snap_only_local_datasets}" ]]; then snap_only_local_datasets='true'; fi
function split_pkgs_by_importance () {
local pkgs_in_transaction
@ -58,6 +59,25 @@ function get_globally_snappable_datasets () {
done <<<"${datasets_list}"
}
function get_local_snappable_datasets () {
local datasets_list
datasets_list="$(findmnt --json --list --output 'fstype,source,target' | \
jq --raw-output '.[][] | select(.fstype=="zfs") | .source')"
while IFS= read -r dataset; do
local_snappable_datasets+=("${dataset}")
done <<<"${datasets_list}"
}
function trim_globally_snappable_datasets () {
for global_dataset in "${globally_snappable_datasets[@]}"; do
for local_dataset in "${local_snappable_datasets[@]}"; do
if grep -Piq -- '^'"${local_dataset}"'$' <<<"${global_dataset}"; then
snappable_datasets+=("${global_dataset}")
fi
done
done
}
function write_pkg_list_oneline () {
local unabridged_pkg_list_oneline
if [[ "${severity}" == 'imp' ]]; then
@ -93,6 +113,15 @@ function main () {
local -a globally_snappable_datasets
get_globally_snappable_datasets
local -a snappable_datasets
if [[ "${snap_only_local_datasets}" == 'true' ]]; then
local local_snappable_datasets
get_local_snappable_datasets
trim_globally_snappable_datasets
else
snappable_datasets=("${globally_snappable_datasets}")
fi
local pkg_list_oneline
write_pkg_list_oneline