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#! /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 248
#
# Validate if the sysfs devinfo/<devid>/fsid behaves properly
# Steps:
# Create a sprout filesystem (an rw device on top of a seed device)
# Read the seed and sprout devices fsid from the superblock
# Validate with the sysfs fsid
. ./common/preamble
_begin_fstest auto quick seed volume
_supported_fs btrfs
_require_test
_require_scratch_dev_pool 2
_require_btrfs_forget_or_module_loadable
_require_command "$BTRFS_TUNE_PROG" btrfstune
_require_btrfs_command inspect-internal dump-super
_require_btrfs_sysfs_fsid
_scratch_dev_pool_get 1
# use the scratch device as a seed device
seed_dev=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{ print $1 }')
# use the spare device as a sprout device
_spare_dev_get
# create seed device
_scratch_pool_mkfs >> $seqres.full 2>&1
$BTRFS_TUNE_PROG -S 1 $seed_dev
_scratch_mount >> $seqres.full 2>&1
# create a sprout device
$BTRFS_UTIL_PROG device add -f $SPARE_DEV $SCRATCH_MNT >> $seqres.full 2>&1
_scratch_unmount
# record the fsid of both seed and sprout devices
seedfsid=$($BTRFS_UTIL_PROG inspect-internal dump-super $seed_dev |grep ^fsid |\
$AWK_PROG '{print $2}')
sproutfsid=$($BTRFS_UTIL_PROG inspect-internal dump-super $SPARE_DEV |\
grep ^fsid |$AWK_PROG '{print $2}')
# validate it with the fsid as shown in the sysfs
_mount -o device=$seed_dev $SPARE_DEV $SCRATCH_MNT
cat /sys/fs/btrfs/$sproutfsid/devinfo/2/fsid | grep -v $sproutfsid
cat /sys/fs/btrfs/$sproutfsid/devinfo/1/fsid | grep -v $seedfsid
_scratch_unmount
_spare_dev_put
_scratch_dev_pool_put
echo "Silence is golden"
# success, all done
status=0
exit
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