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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2011 Red Hat. All Rights Reserved.
#
# FS QA Test No. btrfs/001
#
# Test btrfs's subvolume and snapshot support
#
. ./common/preamble
_begin_fstest auto quick subvol snapshot
. ./common/filter
. ./common/filter.btrfs
_supported_fs btrfs
_require_scratch
_scratch_mkfs > /dev/null 2>&1
_scratch_mount
# First test basic snapshotting
echo "Creating file foo in root dir"
dd if=/dev/zero of=$SCRATCH_MNT/foo bs=1M count=1 &> /dev/null
echo "List root dir"
ls $SCRATCH_MNT
echo "Creating snapshot of root dir"
_btrfs subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
echo "List root dir after snapshot"
ls $SCRATCH_MNT
echo "List snapshot dir"
ls $SCRATCH_MNT/snap
rm -f $SCRATCH_MNT/foo
echo "List root dir after rm of foo"
ls $SCRATCH_MNT
echo "List snapshot dir"
ls $SCRATCH_MNT/snap
# Test creating a normal subvolme
$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/subvol | _filter_scratch
echo "Listing root dir"
ls $SCRATCH_MNT
echo "Listing subvol"
ls $SCRATCH_MNT/subvol
# Test setting a default mount
echo "Creating file bar in subvol"
dd if=/dev/zero of=$SCRATCH_MNT/subvol/bar bs=1M count=1 &> /dev/null
echo "Setting subvol to the default"
subvolid=$(_btrfs_get_subvolid $SCRATCH_MNT subvol)
$BTRFS_UTIL_PROG subvolume set-default $subvolid $SCRATCH_MNT | _filter_scratch
_scratch_cycle_mount
echo "List root dir which is now subvol"
ls $SCRATCH_MNT
_scratch_unmount
echo "Mounting sbuvolid=0 for the root dir"
_scratch_mount "-o subvolid=0"
echo "List root dir"
ls $SCRATCH_MNT
echo "Setting the root dir as the default again"
$BTRFS_UTIL_PROG subvolume set-default 0 $SCRATCH_MNT | _filter_scratch
_scratch_cycle_mount
echo "List root dir"
ls $SCRATCH_MNT
# Test listing the subvolumes
echo "Listing subvolumes"
$BTRFS_UTIL_PROG subvolume list $SCRATCH_MNT | $AWK_PROG '{ print $NF }'
# Delete the snapshot
$BTRFS_UTIL_PROG subvolume delete $SCRATCH_MNT/snap | _filter_btrfs_subvol_delete
echo "List root dir"
ls $SCRATCH_MNT
_scratch_cycle_mount
echo "List root dir"
ls $SCRATCH_MNT
status=0 ; exit
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