| #!/bin/ksh -p |
| # |
| # CDDL HEADER START |
| # |
| # This file and its contents are supplied under the terms of the |
| # Common Development and Distribution License ("CDDL"), version 1.0. |
| # You may only use this file in accordance with the terms of version |
| # 1.0 of the CDDL. |
| # |
| # A full copy of the text of the CDDL should have accompanied this |
| # source. A copy of the CDDL is also available via the Internet at |
| # http://www.illumos.org/license/CDDL. |
| # |
| # CDDL HEADER END |
| # |
| |
| # |
| # Copyright (c) 2020, George Amanakis. All rights reserved. |
| # |
| |
| . $STF_SUITE/include/libtest.shlib |
| . $STF_SUITE/tests/functional/l2arc/l2arc.cfg |
| |
| # |
| # DESCRIPTION: |
| # Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present. |
| # |
| # STRATEGY: |
| # 1. Create pool with a cache device. |
| # 2. Create a random file in that pool and random read for 10 sec. |
| # 3. Offline the L2ARC device. |
| # 4. Read the amount of log blocks written from the header of the |
| # L2ARC device. |
| # 5. Online the L2ARC device. |
| # 6. Read the amount of log blocks rebuilt in arcstats and compare to |
| # (4). |
| # 7. Check if the labels of the L2ARC device are intact. |
| # |
| |
| verify_runnable "global" |
| |
| log_assert "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present." |
| |
| function cleanup |
| { |
| if poolexists $TESTPOOL ; then |
| destroy_pool $TESTPOOL |
| fi |
| |
| log_must set_tunable32 L2ARC_NOPREFETCH $noprefetch |
| log_must set_tunable32 L2ARC_REBUILD_BLOCKS_MIN_L2SIZE \ |
| $rebuild_blocks_min_l2size |
| } |
| log_onexit cleanup |
| |
| # L2ARC_NOPREFETCH is set to 0 to let L2ARC handle prefetches |
| typeset noprefetch=$(get_tunable L2ARC_NOPREFETCH) |
| typeset rebuild_blocks_min_l2size=$(get_tunable L2ARC_REBUILD_BLOCKS_MIN_L2SIZE) |
| log_must set_tunable32 L2ARC_NOPREFETCH 0 |
| log_must set_tunable32 L2ARC_REBUILD_BLOCKS_MIN_L2SIZE 0 |
| |
| typeset fill_mb=800 |
| typeset cache_sz=$(( floor($fill_mb / 2) )) |
| export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M |
| |
| log_must truncate -s ${cache_sz}M $VDEV_CACHE |
| |
| log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE |
| |
| log_must fio $FIO_SCRIPTS/mkfiles.fio |
| log_must fio $FIO_SCRIPTS/random_reads.fio |
| |
| arcstat_quiescence_noecho l2_size |
| log_must zpool offline $TESTPOOL $VDEV_CACHE |
| arcstat_quiescence_noecho l2_size |
| |
| typeset l2_rebuild_log_blk_start=$(get_arcstat l2_rebuild_log_blks) |
| typeset l2_dh_log_blk=$(zdb -l $VDEV_CACHE | grep log_blk_count | \ |
| awk '{print $2}') |
| |
| log_must zpool online $TESTPOOL $VDEV_CACHE |
| arcstat_quiescence_noecho l2_size |
| |
| typeset l2_rebuild_log_blk_end=$(arcstat_quiescence_echo l2_rebuild_log_blks) |
| |
| # Upon onlining the cache device we might write additional blocks to it |
| # before it is marked for rebuild as the l2ad_* parameters are not cleared |
| # when offlining the device. See comment in l2arc_rebuild_vdev(). |
| # So we cannot compare the amount of rebuilt log blocks to the amount of log |
| # blocks read from the header of the device. |
| log_must test $(( $l2_rebuild_log_blk_end - \ |
| $l2_rebuild_log_blk_start )) -gt 0 |
| log_must test $l2_dh_log_blk -gt 0 |
| |
| log_must zpool offline $TESTPOOL $VDEV_CACHE |
| arcstat_quiescence_noecho l2_size |
| |
| log_must zdb -lq $VDEV_CACHE |
| |
| log_must zpool destroy -f $TESTPOOL |
| |
| log_pass "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present." |
