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7 # You may not use this file except in compliance with the License.
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12 # and limitations under the License.
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
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24 # Copyright (c) 2013, 2016 by Delphix. All rights reserved.
27 . $STF_SUITE/include/libtest.shlib
31 # Exercise the traversal suspend/resume code in async_destroy by
32 # destroying a file system that has more blocks than we can free
36 # 1. Create a file system
37 # 2. Set recordsize to 512 to create the maximum number of blocks
38 # 3. Set compression to off to force zero-ed blocks to be written
39 # 4. dd a lot of data from /dev/zero to the file system
40 # 5. Destroy the file system
41 # 6. Wait for the freeing property to go to 0
42 # 7. Use zdb to check for leaked blocks
45 TEST_FS=$TESTPOOL/async_destroy
47 verify_runnable "both"
51 datasetexists $TEST_FS && log_must zfs destroy $TEST_FS
52 log_must set_tunable64 zfs_async_block_max_blocks 100000
56 log_assert "async_destroy can suspend and resume traversal"
58 log_must zfs create -o recordsize=1k -o compression=off $TEST_FS
60 # Fill with 128,000 blocks.
61 log_must dd bs=1024k count=128 if=/dev/zero of=/$TEST_FS/file
64 # Decrease the max blocks to free each txg, so that freeing takes
65 # long enough that we can observe it.
67 log_must set_tunable64 zfs_async_block_max_blocks 100
70 log_must zfs destroy $TEST_FS
73 # We monitor the freeing property, to verify we can see blocks being
74 # freed while the suspend/resume code is exercised.
78 while [[ $((SECONDS - t0)) -lt 10 ]]; do
79 [[ "0" != "$(zpool list -Ho freeing $TESTPOOL)" ]] && ((count++))
80 [[ $count -gt 1 ]] && break
84 [[ $count -eq 0 ]] && log_fail "Freeing property remained empty"
87 # After a bit, go back to allowing an unlimited amount of freeing
91 log_must set_tunable64 zfs_async_block_max_blocks 100000
93 # Wait for everything to be freed.
94 while [[ "0" != "$(zpool list -Ho freeing $TESTPOOL)" ]]; do
95 [[ $((SECONDS - t0)) -gt 180 ]] && \
96 log_fail "Timed out waiting for freeing to drop to zero"
99 # Check for leaked blocks.
100 log_must zdb -b $TESTPOOL
102 log_pass "async_destroy can suspend and resume traversal"