1#!/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or http://www.opensolaris.org/os/licensing. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22 23# 24# Copyright (c) 2017, Lawrence Livermore National Security, LLC. 25# 26 27. $STF_SUITE/include/libtest.shlib 28. $STF_SUITE/include/math.shlib 29 30# 31# DESCRIPTION: 32# Ensure stats presented in /proc/spl/kstat/zfs/dbufstats are correct 33# based on /proc/spl/kstat/zfs/dbufs. 34# 35# STRATEGY: 36# 1. Generate a file with random data in it 37# 2. Store output from dbufs kstat 38# 3. Store output from dbufstats kstat 39# 4. Compare stats presented in dbufstats with stat generated using 40# dbufstat and the dbufs kstat output 41# 42 43DBUFSTATS_FILE=$(mktemp $TEST_BASE_DIR/dbufstats.out.XXXXXX) 44DBUFS_FILE=$(mktemp $TEST_BASE_DIR/dbufs.out.XXXXXX) 45 46function cleanup 47{ 48 log_must rm -f $TESTDIR/file $DBUFS_FILE $DBUFSTATS_FILE 49} 50 51function testdbufstat # stat_name dbufstat_filter 52{ 53 name=$1 54 filter="" 55 56 [[ -n "$2" ]] && filter="-F $2" 57 58 if is_linux; then 59 from_dbufstat=$(grep -w "$name" "$DBUFSTATS_FILE" | 60 awk '{ print $3 }') 61 else 62 from_dbufstat=$(awk "/dbufstats\.$name:/ { print \$2 }" \ 63 "$DBUFSTATS_FILE") 64 fi 65 from_dbufs=$(dbufstat -bxn -i "$DBUFS_FILE" "$filter" | wc -l) 66 67 within_tolerance $from_dbufstat $from_dbufs 15 \ 68 || log_fail "Stat $name exceeded tolerance" 69} 70 71verify_runnable "both" 72 73log_assert "dbufstats produces correct statistics" 74 75log_onexit cleanup 76 77log_must file_write -o create -f "$TESTDIR/file" -b 1048576 -c 20 -d R 78sync_all_pools 79 80log_must eval "kstat dbufs > $DBUFS_FILE" 81log_must eval "kstat dbufstats '' > $DBUFSTATS_FILE" 82 83for level in {0..11}; do 84 testdbufstat "cache_level_$level" "dbc=1,level=$level" 85done 86 87testdbufstat "cache_count" "dbc=1" 88testdbufstat "hash_elements" "" 89 90log_pass "dbufstats produces correct statistics passed" 91