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test: impermanence

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Nick 2025-11-04 23:16:03 -06:00
parent 34d40159cc
commit 4210004147
1 changed files with 10 additions and 10 deletions
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20
systems/ceres/config/filesystem.nix
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@ -48,29 +48,29 @@ in
};
boot.initrd.postResumeCommands = lib.mkAfter ''
mkdir -p /mnt
mount -o subvol=/ /dev/disk/by-label/root /mnt
mkdir -p /btrfs_tmp
mount -o subvol=/ /dev/disk/by-label/root /btrfs_tmp
if [[ -e /mnt/@ ]]; then
mkdir -p /mnt/@old_roots
timestamp=$(date --date="@$(stat -c %Y /mnt/@)" "+%Y-%m-%d_%H:%M:%S")
mv /mnt/@ "/mnt/@old_roots/$timestamp"
if [[ -e /btrfs_tmp/@ ]]; then
mkdir -p /btrfs_tmp/@old_roots
timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/@)" "+%Y-%m-%d_%H:%M:%S")
mv /btrfs_tmp/@ "/btrfs_tmp/@old_roots/$timestamp"
fi
delete_subvolume_recursively() {
IFS=$'\n'
for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
delete_subvolume_recursively "/mnt/$i"
delete_subvolume_recursively "/btrfs_tmp/$i"
done
btrfs subvolume delete "$1"
}
for i in $(find /mnt/@old_roots/ -maxdepth 1 -mtime +30); do
for i in $(find /btrfs_tmp/@old_roots/ -maxdepth 1 -mtime +30); do
delete_subvolume_recursively "$i"
done
btrfs subvolume create /mnt/@
umount /mnt
btrfs subvolume create /btrfs_tmp/@
umount /btrfs_tmp
'';
environment.persistence."/persistent" = {