zfs/tests/zfs-tests/tests/functional/features/large_dnode/large_dnode_001_pos.ksh

#!/bin/ksh -p
#
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#
# Copyright (c) 2016 by Lawrence Livermore National Security, LLC.
# Use is subject to license terms.
#

. $STF_SUITE/include/libtest.shlib

#
# DESCRIPTION:
# Verify that the dnode sizes of newly created files are consistent
# with the dnodesize dataset property.
#
# STRATEGY:
# 1. Create a file system
# 2. Set dnodesize to a legal literal value
# 3. Create a file
# 4. Repeat 2-3 for all legal literal values of dnodesize values
# 5. Unmount the file system
# 6. Use zdb to check expected dnode sizes
#

TEST_FS=$TESTPOOL/large_dnode

verify_runnable "both"

function cleanup
{
	datasetexists $TEST_FS && destroy_dataset $TEST_FS
}

log_onexit cleanup
log_assert "dnode sizes are consistent with dnodesize dataset property"

log_must zfs create $TEST_FS

set -A dnsizes "512" "1k" "2k" "4k" "8k" "16k"
set -A inodes

for ((i=0; i < ${#dnsizes[*]}; i++)) ; do
	size=${dnsizes[$i]}
	if [[ $size == "512" ]] ; then
		size="legacy"
	fi
	file=/$TEST_FS/file.$size
	log_must zfs set dnsize=$size $TEST_FS
	touch $file
	inodes[$i]=$(ls -li $file | awk '{print $1}')
done

log_must zfs umount $TEST_FS

for ((i=0; i < ${#dnsizes[*]}; i++)) ; do
	dnsize=$(zdb -dddd $TEST_FS ${inodes[$i]} |
	    awk '/ZFS plain file/ {print $6}' | tr K k)
	if [[ "$dnsize" != "${dnsizes[$i]}" ]]; then
		log_fail "dnode size is $dnsize (expected ${dnsizes[$i]})"
	fi
done

log_pass "dnode sizes are consistent with dnodesize dataset property"