| #!/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) 2013, 2016 by Delphix. All rights reserved. |
| # |
| |
| . $STF_SUITE/include/libtest.shlib |
| |
| # |
| # DESCRIPTION: |
| # Exercise the traversal suspend/resume code in async_destroy by |
| # destroying a file system that has more blocks than we can free |
| # in a single txg. |
| # |
| # STRATEGY: |
| # 1. Create a file system |
| # 2. Set recordsize to 512 to create the maximum number of blocks |
| # 3. Set compression to off to force zero-ed blocks to be written |
| # 4. dd a lot of data from /dev/zero to the file system |
| # 5. Destroy the file system |
| # 6. Wait for the freeing property to go to 0 |
| # 7. Use zdb to check for leaked blocks |
| # |
| |
| TEST_FS=$TESTPOOL/async_destroy |
| |
| verify_runnable "both" |
| |
| function cleanup |
| { |
| datasetexists $TEST_FS && destroy_dataset $TEST_FS |
| log_must set_tunable64 ASYNC_BLOCK_MAX_BLOCKS 100000 |
| } |
| |
| log_onexit cleanup |
| log_assert "async_destroy can suspend and resume traversal" |
| |
| log_must zfs create -o recordsize=1k -o compression=off $TEST_FS |
| |
| # Fill with 128,000 blocks. |
| log_must dd bs=1024k count=128 if=/dev/zero of=/$TEST_FS/file |
| |
| # |
| # Decrease the max blocks to free each txg, so that freeing takes |
| # long enough that we can observe it. |
| # |
| log_must set_tunable64 ASYNC_BLOCK_MAX_BLOCKS 100 |
| |
| log_must sync |
| log_must zfs destroy $TEST_FS |
| |
| # |
| # We monitor the freeing property, to verify we can see blocks being |
| # freed while the suspend/resume code is exercised. |
| # |
| t0=$SECONDS |
| count=0 |
| while [[ $((SECONDS - t0)) -lt 10 ]]; do |
| [[ "0" != "$(zpool list -Ho freeing $TESTPOOL)" ]] && ((count++)) |
| [[ $count -gt 1 ]] && break |
| sleep 1 |
| done |
| |
| [[ $count -eq 0 ]] && log_fail "Freeing property remained empty" |
| |
| # |
| # After a bit, go back to allowing an unlimited amount of freeing |
| # per txg. |
| # |
| sleep 10 |
| log_must set_tunable64 ASYNC_BLOCK_MAX_BLOCKS 100000 |
| |
| # Wait for everything to be freed. |
| while [[ "0" != "$(zpool list -Ho freeing $TESTPOOL)" ]]; do |
| [[ $((SECONDS - t0)) -gt 180 ]] && \ |
| log_fail "Timed out waiting for freeing to drop to zero" |
| done |
| |
| # Check for leaked blocks. |
| log_must zdb -b $TESTPOOL |
| |
| log_pass "async_destroy can suspend and resume traversal" |