| #!/bin/ksh -p |
| # |
| # CDDL HEADER START |
| # |
| # The contents of this file are subject to the terms of the |
| # Common Development and Distribution License (the "License"). |
| # You may not use this file except in compliance with the License. |
| # |
| # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| # or http://www.opensolaris.org/os/licensing. |
| # See the License for the specific language governing permissions |
| # and limitations under the License. |
| # |
| # When distributing Covered Code, include this CDDL HEADER in each |
| # file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| # If applicable, add the following below this CDDL HEADER, with the |
| # fields enclosed by brackets "[]" replaced with your own identifying |
| # information: Portions Copyright [yyyy] [name of copyright owner] |
| # |
| # CDDL HEADER END |
| # |
| |
| # |
| # Copyright (c) 2017, Lawrence Livermore National Security, LLC. |
| # |
| |
| . $STF_SUITE/include/libtest.shlib |
| . $STF_SUITE/include/math.shlib |
| |
| # |
| # DESCRIPTION: |
| # Ensure stats presented in /proc/spl/kstat/zfs/dbufstats are correct |
| # based on /proc/spl/kstat/zfs/dbufs. |
| # |
| # STRATEGY: |
| # 1. Generate a file with random data in it |
| # 2. Store output from dbufs kstat |
| # 3. Store output from dbufstats kstat |
| # 4. Compare stats presented in dbufstats with stat generated using |
| # dbufstat and the dbufs kstat output |
| # |
| |
| DBUFSTATS_FILE=$(mktemp $TEST_BASE_DIR/dbufstats.out.XXXXXX) |
| DBUFS_FILE=$(mktemp $TEST_BASE_DIR/dbufs.out.XXXXXX) |
| |
| function cleanup |
| { |
| log_must rm -f $TESTDIR/file $DBUFS_FILE $DBUFSTATS_FILE |
| } |
| |
| function testdbufstat # stat_name dbufstat_filter |
| { |
| name=$1 |
| filter="" |
| |
| [[ -n "$2" ]] && filter="-F $2" |
| |
| from_dbufstat=$(grep -w "$name" "$DBUFSTATS_FILE" | awk '{ print $3 }') |
| from_dbufs=$(dbufstat -bxn -i "$DBUFS_FILE" "$filter" | wc -l) |
| |
| within_tolerance $from_dbufstat $from_dbufs 9 \ |
| || log_fail "Stat $name exceeded tolerance" |
| } |
| |
| verify_runnable "both" |
| |
| log_assert "dbufstats produces correct statistics" |
| |
| log_onexit cleanup |
| |
| log_must file_write -o create -f "$TESTDIR/file" -b 1048576 -c 20 -d R |
| log_must zpool sync |
| |
| log_must eval "cat /proc/spl/kstat/zfs/dbufs > $DBUFS_FILE" |
| log_must eval "cat /proc/spl/kstat/zfs/dbufstats > $DBUFSTATS_FILE" |
| |
| for level in {0..11}; do |
| testdbufstat "cache_level_$level" "dbc=1,level=$level" |
| done |
| |
| testdbufstat "cache_count" "dbc=1" |
| testdbufstat "hash_elements" "" |
| |
| log_pass "dbufstats produces correct statistics passed" |