tests/btrfs/249

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Anand Jain.  All Rights Reserved.
# Copyright (c) 2021 Oracle.  All Rights Reserved.
#
# FS QA Test 249
#
# Validate if the command 'btrfs filesystem usage' works with missing seed
# device
# Steps:
#  Create a degraded raid1 seed device
#  Create a sprout filesystem (an rw device on top of a seed device)
#  Dump 'btrfs filesystem usage', check it didn't fail
#

. ./common/preamble
_begin_fstest auto quick seed volume

_require_scratch_dev_pool 3
_require_command "$WIPEFS_PROG" wipefs
_require_btrfs_forget_or_module_loadable
_wants_kernel_commit a26d60dedf9a \
	"btrfs: sysfs: add devinfo/fsid to retrieve actual fsid from the device"
_fixed_by_git_commit btrfs-progs 32c2e57c65b9 \
	"btrfs-progs: read fsid from the sysfs in device_is_seed"

_scratch_dev_pool_get 2
# use the scratch devices as seed devices
seed_dev1=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{ print $1 }')
seed_dev2=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{ print $2 }')

# use the spare device as a sprout device
_spare_dev_get
sprout_dev=$SPARE_DEV

# create raid1 seed filesystem
_scratch_pool_mkfs "-draid1 -mraid1" >> $seqres.full 2>&1
$BTRFS_TUNE_PROG -S 1 $seed_dev1
$WIPEFS_PROG -a $seed_dev1 >> $seqres.full 2>&1
_btrfs_forget_or_module_reload
_mount -o degraded $seed_dev2 $SCRATCH_MNT >> $seqres.full 2>&1

# create a sprout device
$BTRFS_UTIL_PROG device add -f $SPARE_DEV $SCRATCH_MNT >> $seqres.full 2>&1

# dump filesystem usage if it fails error goes to the bad.out file
$BTRFS_UTIL_PROG filesystem usage $SCRATCH_MNT >> $seqres.full
# also check for the error code
ret=$?
if [ $ret != 0 ]; then
_fail "FAILED: btrfs filesystem usage, ret $ret. Check btrfs.ko and btrfs-progs version."
fi

_scratch_unmount
_spare_dev_put
_scratch_dev_pool_put

echo "Silence is golden"
# success, all done
status=0
exit