fs_utils.sh

#!/bin/bash

set -euo pipefail
set -x
IFS=$'\n\t'

source /tests/test_env.sh

umount_fs() {
echo 'Umounting fs'
busy=true
while $busy
do
 if mountpoint -q $DESTINATION
 then
  exit_code=$?
  if umount -rv $DESTINATION ; then
   busy=false  # umount successful
  else
  sync
   echo '.'  # output to show that the script is alive
   sleep 5      # 5 seconds for testing, modify to 300 seconds later on
  fi
 else
  busy=false  # not mounted
 fi
done
echo "Unmounted successfully"
}

mount_fs() {
	fallocate --verbose -l $FILESYSTEM_FILE_SIZE $FILESYSTEM_FILE
	mkfs -t nilfs2 $FILESYSTEM_FILE
	mkdir -pv $DESTINATION
	mount -i -v -t nilfs2 $FILESYSTEM_FILE $DESTINATION
}

remount_fs() {
	umount_fs
	mount -i -v -t nilfs2 $FILESYSTEM_FILE $DESTINATION
}

destroy_fs() {
	umount_fs || true
	rm -fv $FILESYSTEM_FILE
	sync
	sleep 2
	umount_fs || true
	rm -fv $FILESYSTEM_FILE
	sync
}

run_gc_cleanup() {
	echo "Running gc cleanup"
	echo "Launching cleanerd daemon"
	nilfs_cleanerd
	sleep 2
	echo "Cleaning"
	nilfs-clean -p 0 -m 0 --verbose --speed 32
	echo 'Waiting for garbage collection end'
	timeout 240s bash -c "( tail -n0 -f /var/log/daemon.log &) | grep -q -e 'manual run completed' -e 'wait 10.000000000'"
	echo 'Garbage collection ended'
	nilfs-clean --stop
	nilfs-clean --quit
}