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zfs receive and rollback can skew filesystem_count

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This commit fixes a small issue which causes both zfs receive and
rollback operations to incorrectly increase the "filesystem_count"
property value.

This change also adds a new test group "limits" to the ZFS Test Suite
to exercise both filesystem_count/limit and snapshot_count/limit
functionality.

Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #8232
This commit is contained in:
loli10K 2019-01-08 19:17:46 +01:00 committed by Brian Behlendorf
parent f384c045d8
commit 0f5f23869a
11 changed files with 464 additions and 8 deletions
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1
configure.ac
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@ -290,6 +290,7 @@ AC_CONFIG_FILES([
tests/zfs-tests/tests/functional/largest_pool/Makefile
tests/zfs-tests/tests/functional/link_count/Makefile
tests/zfs-tests/tests/functional/libzfs/Makefile
tests/zfs-tests/tests/functional/limits/Makefile
tests/zfs-tests/tests/functional/migration/Makefile
tests/zfs-tests/tests/functional/mmap/Makefile
tests/zfs-tests/tests/functional/mmp/Makefile

10
module/zfs/dsl_destroy.c
View File

@ -792,14 +792,8 @@ dsl_dir_destroy_sync(uint64_t ddobj, dmu_tx_t *tx)
ASSERT0(dsl_dir_phys(dd)->dd_head_dataset_obj);
/*
* Decrement the filesystem count for all parent filesystems.
*
* When we receive an incremental stream into a filesystem that already
* exists, a temporary clone is created. We never count this temporary
* clone, whose name begins with a '%'.
*/
if (dd->dd_myname[0] != '%' && dd->dd_parent != NULL)
/* Decrement the filesystem count for all parent filesystems. */
if (dd->dd_parent != NULL)
dsl_fs_ss_count_adjust(dd->dd_parent, -1,
DD_FIELD_FILESYSTEM_COUNT, tx);

5
tests/runfiles/linux.run
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@ -616,6 +616,11 @@ pre =
post =
tags = ['functional', 'largest_pool']
[tests/functional/limits]
tests = ['filesystem_count', 'filesystem_limit', 'snapshot_count',
'snapshot_limit']
tags = ['functional', 'limits']
[tests/functional/link_count]
tests = ['link_count_001']
tags = ['functional', 'link_count']

1
tests/zfs-tests/tests/functional/Makefile.am
View File

@ -32,6 +32,7 @@ SUBDIRS = \
large_files \
largest_pool \
libzfs \
limits \
pyzfs \
link_count \
migration \

9
tests/zfs-tests/tests/functional/limits/Makefile.am Normal file
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@ -0,0 +1,9 @@
pkgdatadir = $(datadir)/@PACKAGE@/zfs-tests/tests/functional/limits
dist_pkgdata_SCRIPTS = \
setup.ksh \
cleanup.ksh \
filesystem_count.ksh \
filesystem_limit.ksh \
snapshot_count.ksh \
snapshot_limit.ksh

19
tests/zfs-tests/tests/functional/limits/cleanup.ksh Executable file
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@ -0,0 +1,19 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
default_cleanup

123
tests/zfs-tests/tests/functional/limits/filesystem_count.ksh Executable file
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@ -0,0 +1,123 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# ZFS 'filesystem_count' property is handled correctly by various actions
#
# STRATEGY:
# 1. Verify 'zfs create' and 'zfs clone' increment 'filesystem_count' value
# 2. Verify 'zfs destroy' decrements the value
# 3. Verify 'zfs rename' updates counts across different hierarchies
# 4. Verify 'zfs promote' preserves counts within different hierarchies
# 5. Verify 'zfs receive' correct behaviour
# 6. Verify 'zfs rollback' does not update 'filesystem_count' value
# 7. Verify 'zfs diff' does not update 'filesystem_count' value
#
verify_runnable "both"
function setup
{
log_must zfs create "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL"
# Set filesystem_limit just to activate the filesystem_count property
log_must zfs set filesystem_limit=100 "$DATASET_TEST"
}
function cleanup
{
destroy_dataset "$DATASET_TEST" "-Rf"
destroy_dataset "$DATASET_UTIL" "-Rf"
rm -f $ZSTREAM
}
log_assert "Verify 'filesystem_count' is handled correctly by various actions"
log_onexit cleanup
DATASET_TEST="$TESTPOOL/$TESTFS/filesystem_count_test"
DATASET_UTIL="$TESTPOOL/$TESTFS/filesystem_count_util"
ZSTREAM="$TEST_BASE_DIR/filesystem_count.$$"
# 1. Verify 'zfs create' and 'zfs clone' increment 'filesystem_count' value
setup
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "0"
log_must zfs create "$DATASET_TEST/create_clone"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
log_must zfs snapshot "$DATASET_TEST/create_clone@snap"
log_must zfs clone "$DATASET_TEST/create_clone@snap" "$DATASET_TEST/clone"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "2"
cleanup
# 2. Verify 'zfs destroy' decrements the value
setup
log_must zfs create "$DATASET_TEST/destroy"
log_must zfs destroy "$DATASET_TEST/destroy"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "0"
cleanup
# 3. Verify 'zfs rename' updates counts across different hierarchies
setup
log_must zfs create "$DATASET_TEST/rename"
log_must zfs rename "$DATASET_TEST/rename" "$DATASET_UTIL/renamed"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "0"
log_must test "$(get_prop 'filesystem_count' "$DATASET_UTIL")" == "1"
cleanup
# 4. Verify 'zfs promote' preserves counts within different hierarchies
setup
log_must zfs create "$DATASET_UTIL/promote"
log_must zfs snapshot "$DATASET_UTIL/promote@snap"
log_must zfs clone "$DATASET_UTIL/promote@snap" "$DATASET_TEST/promoted"
log_must zfs promote "$DATASET_TEST/promoted"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
log_must test "$(get_prop 'filesystem_count' "$DATASET_UTIL")" == "1"
cleanup
# 5. Verify 'zfs receive' correct behaviour
setup
log_must zfs create "$DATASET_UTIL/send"
log_must zfs snapshot "$DATASET_UTIL/send@snap1"
log_must zfs snapshot "$DATASET_UTIL/send@snap2"
log_must eval "zfs send $DATASET_UTIL/send@snap1 > $ZSTREAM"
log_must eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
log_must eval "zfs send -i @snap1 $DATASET_UTIL/send@snap2 > $ZSTREAM"
log_must eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
cleanup
# 6. Verify 'zfs rollback' does not update 'filesystem_count' value
setup
log_must zfs create "$DATASET_TEST/rollback"
log_must zfs snapshot "$DATASET_TEST/rollback@snap"
log_must zfs rollback "$DATASET_TEST/rollback@snap"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
cleanup
# 7. Verify 'zfs diff' does not update 'filesystem_count' value
setup
log_must zfs create "$DATASET_TEST/diff"
log_must zfs snapshot "$DATASET_TEST/diff@snap1"
log_must zfs snapshot "$DATASET_TEST/diff@snap2"
log_must zfs diff "$DATASET_TEST/diff@snap1" "$DATASET_TEST/diff@snap2"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
log_must zfs diff "$DATASET_TEST/diff@snap2"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "1"
log_pass "'filesystem_count' property is handled correctly"

84
tests/zfs-tests/tests/functional/limits/filesystem_limit.ksh Executable file
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@ -0,0 +1,84 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# ZFS 'filesystem_limit' is enforced when executing various actions
#
# STRATEGY:
# 1. Verify 'zfs create' and 'zfs clone' cannot exceed the filesystem_limit
# 2. Verify 'zfs rename' cannot move filesystems exceeding the limit
# 3. Verify 'zfs receive' cannot exceed the limit
#
verify_runnable "both"
function setup
{
log_must zfs create "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL"
}
function cleanup
{
destroy_dataset "$DATASET_TEST" "-Rf"
destroy_dataset "$DATASET_UTIL" "-Rf"
rm -f $ZSTREAM
}
log_assert "Verify 'filesystem_limit' is enforced executing various actions"
log_onexit cleanup
DATASET_TEST="$TESTPOOL/$TESTFS/filesystem_limit_test"
DATASET_UTIL="$TESTPOOL/$TESTFS/filesystem_limit_util"
ZSTREAM="$TEST_BASE_DIR/filesystem_limit.$$"
# 1. Verify 'zfs create' and 'zfs clone' cannot exceed the filesystem_limit
setup
log_must zfs set filesystem_limit=1 "$DATASET_TEST"
log_must zfs create "$DATASET_TEST/create"
log_mustnot zfs create "$DATASET_TEST/create_exceed"
log_mustnot datasetexists "$DATASET_TEST/create_exceed"
log_must zfs set filesystem_limit=2 "$DATASET_TEST"
log_must zfs snapshot "$DATASET_TEST/create@snap"
log_must zfs clone "$DATASET_TEST/create@snap" "$DATASET_TEST/clone"
log_mustnot zfs clone "$DATASET_TEST/create@snap" "$DATASET_TEST/clone_exceed"
log_mustnot datasetexists "$DATASET_TEST/clone_exceed"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "2"
cleanup
# 2. Verify 'zfs rename' cannot move filesystems exceeding the limit
setup
log_must zfs set filesystem_limit=0 "$DATASET_UTIL"
log_must zfs create "$DATASET_TEST/rename"
log_mustnot zfs rename "$DATASET_TEST/rename" "$DATASET_UTIL/renamed"
log_mustnot datasetexists "$DATASET_UTIL/renamed"
log_must test "$(get_prop 'filesystem_count' "$DATASET_UTIL")" == "0"
cleanup
# 3. Verify 'zfs receive' cannot exceed the limit
setup
log_must zfs set filesystem_limit=0 "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL/send"
log_must zfs snapshot "$DATASET_UTIL/send@snap1"
log_must eval "zfs send $DATASET_UTIL/send@snap1 > $ZSTREAM"
log_mustnot eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_mustnot datasetexists "$DATASET_TEST/received"
log_must test "$(get_prop 'filesystem_count' "$DATASET_TEST")" == "0"
log_pass "'filesystem_limit' property is enforced"

21
tests/zfs-tests/tests/functional/limits/setup.ksh Executable file
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@ -0,0 +1,21 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
DISK=${DISKS%% *}
default_volume_setup $DISK

100
tests/zfs-tests/tests/functional/limits/snapshot_count.ksh Executable file
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@ -0,0 +1,100 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# ZFS 'snapshot_count' property is handled correctly by various actions
#
# STRATEGY:
# 1. Verify 'zfs snapshot' increments 'snapshot_count' value
# 2. Verify 'zfs destroy' decrements the value
# 3. Verify 'zfs rename' updates counts across different hierarchies
# 4. Verify 'zfs promote' updates counts across different hierarchies
# 5. Verify 'zfs receive' correct behaviour
#
verify_runnable "both"
function setup
{
log_must zfs create "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL"
# Set snapshot_limit just to activate the snapshot_count property
log_must zfs set snapshot_limit=100 "$DATASET_TEST"
}
function cleanup
{
destroy_dataset "$DATASET_TEST" "-Rf"
destroy_dataset "$DATASET_UTIL" "-Rf"
rm -f $ZSTREAM
}
log_assert "Verify 'snapshot_count' is handled correctly by various actions"
log_onexit cleanup
DATASET_TEST="$TESTPOOL/$TESTFS/snapshot_count_test"
DATASET_UTIL="$TESTPOOL/$TESTFS/snapshot_count_util"
ZSTREAM="$TEST_BASE_DIR/snapshot_count.$$"
# 1. Verify 'zfs snapshot' increments 'snapshot_count' value
setup
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "0"
log_must zfs snapshot "$DATASET_TEST@snap"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "1"
cleanup
# 2. Verify 'zfs destroy' decrements the value
setup
log_must zfs snapshot "$DATASET_TEST@snap"
log_must zfs destroy "$DATASET_TEST@snap"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "0"
cleanup
# 3. Verify 'zfs rename' updates counts across different hierarchies
setup
log_must zfs create "$DATASET_TEST/renamed"
log_must zfs snapshot "$DATASET_TEST/renamed@snap"
log_must zfs rename "$DATASET_TEST/renamed" "$DATASET_UTIL/renamed"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "0"
log_must test "$(get_prop 'snapshot_count' "$DATASET_UTIL")" == "1"
cleanup
# 4. Verify 'zfs promote' updates counts across different hierarchies
setup
log_must zfs create "$DATASET_UTIL/promote"
log_must zfs snapshot "$DATASET_UTIL/promote@snap"
log_must zfs clone "$DATASET_UTIL/promote@snap" "$DATASET_TEST/promoted"
log_must zfs promote "$DATASET_TEST/promoted"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "1"
log_must test "$(get_prop 'snapshot_count' "$DATASET_UTIL")" == "0"
cleanup
# 5. Verify 'zfs receive' correct behaviour
setup
log_must zfs create "$DATASET_UTIL/send"
log_must zfs snapshot "$DATASET_UTIL/send@snap1"
log_must zfs snapshot "$DATASET_UTIL/send@snap2"
log_must eval "zfs send $DATASET_UTIL/send@snap1 > $ZSTREAM"
log_must eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "1"
log_must eval "zfs send -i @snap1 $DATASET_UTIL/send@snap2 > $ZSTREAM"
log_must eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "2"
log_pass "'snapshot_count' property is handled correctly"

99
tests/zfs-tests/tests/functional/limits/snapshot_limit.ksh Executable file
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@ -0,0 +1,99 @@
#!/bin/ksh -p
#
# 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.
#
#
# Copyright 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
#
# DESCRIPTION:
# ZFS 'snapshot_limit' is enforced when executing various actions
#
# STRATEGY:
# 1. Verify 'zfs snapshot' cannot exceed the snapshot_limit
# 2. Verify 'zfs rename' cannot move snapshots exceeding the limit
# 3. Verify 'zfs promote' cannot exceed the limit
# 4. Verify 'zfs receive' cannot exceed the limit
#
verify_runnable "both"
function setup
{
log_must zfs create "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL"
}
function cleanup
{
destroy_dataset "$DATASET_TEST" "-Rf"
destroy_dataset "$DATASET_UTIL" "-Rf"
rm -f $ZSTREAM
}
log_assert "Verify 'snapshot_limit' is enforced when executing various actions"
log_onexit cleanup
DATASET_TEST="$TESTPOOL/$TESTFS/snapshot_limit_test"
DATASET_UTIL="$TESTPOOL/$TESTFS/snapshot_limit_util"
ZSTREAM="$TEST_BASE_DIR/snapshot_limit.$$"
# 1. Verify 'zfs snapshot' cannot exceed the snapshot_limit
setup
log_must zfs set snapshot_limit=1 "$DATASET_TEST"
log_must zfs snapshot "$DATASET_TEST@snap"
log_mustnot zfs snapshot "$DATASET_TEST@snap_exceed"
log_mustnot datasetexists "$DATASET_TEST@snap_exceed"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "1"
cleanup
# 2. Verify 'zfs rename' cannot move snapshots exceeding the limit
setup
log_must zfs set snapshot_limit=0 "$DATASET_UTIL"
log_must zfs create "$DATASET_TEST/rename"
log_must zfs snapshot "$DATASET_TEST/rename@snap"
log_mustnot zfs rename "$DATASET_TEST/rename" "$DATASET_UTIL/renamed"
log_mustnot datasetexists "$DATASET_UTIL/renamed"
log_must test "$(get_prop 'snapshot_count' "$DATASET_UTIL")" == "0"
cleanup
# 3. Verify 'zfs promote' cannot exceed the limit
setup
log_must zfs set snapshot_limit=0 "$DATASET_UTIL"
log_must zfs create "$DATASET_TEST/promote"
log_must zfs snapshot "$DATASET_TEST/promote@snap"
log_must zfs clone "$DATASET_TEST/promote@snap" "$DATASET_UTIL/promoted"
log_mustnot zfs promote "$DATASET_UTIL/promoted"
log_mustnot datasetexists "$DATASET_UTIL/promoted@snap"
log_must test "$(get_prop 'snapshot_count' "$DATASET_UTIL")" == "0"
cleanup
# 4. Verify 'zfs receive' cannot exceed the limit
setup
log_must zfs set snapshot_limit=0 "$DATASET_TEST"
log_must zfs create "$DATASET_UTIL/send"
log_must zfs snapshot "$DATASET_UTIL/send@snap1"
log_must eval "zfs send $DATASET_UTIL/send@snap1 > $ZSTREAM"
log_mustnot eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_mustnot datasetexists "$DATASET_TEST/received"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "0"
log_must zfs set snapshot_limit=1 "$DATASET_TEST"
log_must eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_must zfs snapshot "$DATASET_UTIL/send@snap2"
log_must eval "zfs send -i @snap1 $DATASET_UTIL/send@snap2 > $ZSTREAM"
log_mustnot eval "zfs receive $DATASET_TEST/received < $ZSTREAM"
log_mustnot datasetexists "$DATASET_TEST/received@snap2"
log_must test "$(get_prop 'snapshot_count' "$DATASET_TEST")" == "1"
log_pass "'snapshot_limit' property is enforced"