diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/runfiles/common.run | 2 | ||||
| -rwxr-xr-x | tests/test-runner/bin/zts-report.py.in | 2 | ||||
| -rw-r--r-- | tests/zfs-tests/cmd/.gitignore | 1 | ||||
| -rw-r--r-- | tests/zfs-tests/cmd/Makefile.am | 1 | ||||
| -rw-r--r-- | tests/zfs-tests/cmd/clone_mmap_write.c | 123 | ||||
| -rw-r--r-- | tests/zfs-tests/include/commands.cfg | 1 | ||||
| -rw-r--r-- | tests/zfs-tests/tests/Makefile.am | 1 | ||||
| -rwxr-xr-x | tests/zfs-tests/tests/functional/block_cloning/block_cloning_clone_mmap_write.ksh | 79 |
8 files changed, 209 insertions, 1 deletions
diff --git a/tests/runfiles/common.run b/tests/runfiles/common.run index 13d831283..f320c5423 100644 --- a/tests/runfiles/common.run +++ b/tests/runfiles/common.run @@ -79,7 +79,7 @@ tests = ['block_cloning_copyfilerange', 'block_cloning_copyfilerange_partial', 'block_cloning_cross_enc_dataset', 'block_cloning_copyfilerange_fallback_same_txg', 'block_cloning_replay', 'block_cloning_replay_encrypted', - 'block_cloning_lwb_buffer_overflow'] + 'block_cloning_lwb_buffer_overflow', 'block_cloning_clone_mmap_write'] tags = ['functional', 'block_cloning'] [tests/functional/bootfs] diff --git a/tests/test-runner/bin/zts-report.py.in b/tests/test-runner/bin/zts-report.py.in index 7bf4d05d5..c84f75cd8 100755 --- a/tests/test-runner/bin/zts-report.py.in +++ b/tests/test-runner/bin/zts-report.py.in @@ -287,6 +287,8 @@ elif sys.platform.startswith('linux'): 'bclone/bclone_samefs_data': ['SKIP', cfr_reason], 'bclone/bclone_samefs_embedded': ['SKIP', cfr_reason], 'bclone/bclone_samefs_hole': ['SKIP', cfr_reason], + 'block_cloning/block_cloning_clone_mmap_write': + ['SKIP', cfr_reason], 'block_cloning/block_cloning_copyfilerange': ['SKIP', cfr_reason], 'block_cloning/block_cloning_copyfilerange_cross_dataset': diff --git a/tests/zfs-tests/cmd/.gitignore b/tests/zfs-tests/cmd/.gitignore index 5f53b6871..a696fd387 100644 --- a/tests/zfs-tests/cmd/.gitignore +++ b/tests/zfs-tests/cmd/.gitignore @@ -2,6 +2,7 @@ /btree_test /chg_usr_exec /clonefile +/clone_mmap_write /devname2devid /dir_rd_update /draid diff --git a/tests/zfs-tests/cmd/Makefile.am b/tests/zfs-tests/cmd/Makefile.am index 1b915ae98..379dc5e23 100644 --- a/tests/zfs-tests/cmd/Makefile.am +++ b/tests/zfs-tests/cmd/Makefile.am @@ -3,6 +3,7 @@ scripts_zfs_tests_bindir = $(datadir)/$(PACKAGE)/zfs-tests/bin scripts_zfs_tests_bin_PROGRAMS = %D%/chg_usr_exec scripts_zfs_tests_bin_PROGRAMS += %D%/clonefile +scripts_zfs_tests_bin_PROGRAMS += %D%/clone_mmap_write scripts_zfs_tests_bin_PROGRAMS += %D%/cp_files scripts_zfs_tests_bin_PROGRAMS += %D%/ctime scripts_zfs_tests_bin_PROGRAMS += %D%/dir_rd_update diff --git a/tests/zfs-tests/cmd/clone_mmap_write.c b/tests/zfs-tests/cmd/clone_mmap_write.c new file mode 100644 index 000000000..6a5cd8721 --- /dev/null +++ b/tests/zfs-tests/cmd/clone_mmap_write.c @@ -0,0 +1,123 @@ +/* + * 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 https://opensource.org/licenses/CDDL-1.0. + * 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 + */ + +/* + * This program clones the file, mmap it, and writes from the map into + * file. This scenario triggers a panic on Linux in dbuf_redirty(), + * which is fixed under PR#15656. On FreeBSD, the same test causes data + * corruption, which is fixed by PR#15665. + * + * It would be good to test for this scenario in ZTS. This program and + * issue was initially produced by @robn. + */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#include <fcntl.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <sys/stat.h> +#include <sys/mman.h> + +#ifdef __FreeBSD__ +#define loff_t off_t +#endif + +ssize_t +copy_file_range(int, loff_t *, int, loff_t *, size_t, unsigned int) + __attribute__((weak)); + +static int +open_file(const char *source) +{ + int fd; + if ((fd = open(source, O_RDWR | O_APPEND)) < 0) { + (void) fprintf(stderr, "Error opening %s\n", source); + exit(1); + } + sync(); + return (fd); +} + +static int +clone_file(int sfd, long long size, const char *dest) +{ + int dfd; + + if ((dfd = open(dest, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)) < 0) { + (void) fprintf(stderr, "Error opening %s\n", dest); + exit(1); + } + + if (copy_file_range(sfd, 0, dfd, 0, size, 0) < 0) { + (void) fprintf(stderr, "copy_file_range failed\n"); + exit(1); + } + + return (dfd); +} + +static void * +map_file(int fd, long long size) +{ + void *p = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); + if (p == MAP_FAILED) { + (void) fprintf(stderr, "mmap failed\n"); + exit(1); + } + + return (p); +} + +static void +map_write(void *p, int fd) +{ + if (pwrite(fd, p, 1024*128, 0) < 0) { + (void) fprintf(stderr, "write failed\n"); + exit(1); + } +} + +int +main(int argc, char **argv) +{ + int sfd, dfd; + void *p; + struct stat sb; + if (argc != 3) { + (void) printf("usage: %s <input source file> " + "<clone destination file>\n", argv[0]); + exit(1); + } + sfd = open_file(argv[1]); + if (fstat(sfd, &sb) == -1) { + (void) fprintf(stderr, "fstat failed\n"); + exit(1); + } + dfd = clone_file(sfd, sb.st_size, argv[2]); + p = map_file(dfd, sb.st_size); + map_write(p, dfd); + return (0); +} diff --git a/tests/zfs-tests/include/commands.cfg b/tests/zfs-tests/include/commands.cfg index c6f74cd81..797078ed3 100644 --- a/tests/zfs-tests/include/commands.cfg +++ b/tests/zfs-tests/include/commands.cfg @@ -185,6 +185,7 @@ export ZFSTEST_FILES='badsend btree_test chg_usr_exec clonefile + clone_mmap_write devname2devid dir_rd_update draid diff --git a/tests/zfs-tests/tests/Makefile.am b/tests/zfs-tests/tests/Makefile.am index 33e97d22b..aeff66627 100644 --- a/tests/zfs-tests/tests/Makefile.am +++ b/tests/zfs-tests/tests/Makefile.am @@ -461,6 +461,7 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \ functional/bclone/setup.ksh \ functional/block_cloning/cleanup.ksh \ functional/block_cloning/setup.ksh \ + functional/block_cloning/block_cloning_clone_mmap_write.ksh \ functional/block_cloning/block_cloning_copyfilerange_cross_dataset.ksh \ functional/block_cloning/block_cloning_copyfilerange_fallback.ksh \ functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh \ diff --git a/tests/zfs-tests/tests/functional/block_cloning/block_cloning_clone_mmap_write.ksh b/tests/zfs-tests/tests/functional/block_cloning/block_cloning_clone_mmap_write.ksh new file mode 100755 index 000000000..6215b3178 --- /dev/null +++ b/tests/zfs-tests/tests/functional/block_cloning/block_cloning_clone_mmap_write.ksh @@ -0,0 +1,79 @@ +#!/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 https://opensource.org/licenses/CDDL-1.0. +# 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 +# + +. $STF_SUITE/include/libtest.shlib +. $STF_SUITE/tests/functional/block_cloning/block_cloning.kshlib + +# +# DESCRIPTION: +# A PANIC is triggered in dbuf_redirty() if we clone a file, mmap it +# and write from the map into the file. PR#15656 fixes this scenario. +# This scenario also causes data corruption on FreeBSD, which is fixed +# by PR#15665. +# +# STRATEGY: +# 1. Create a pool +# 2. Create a test file +# 3. Clone, mmap and write to the file using clone_mmap_write +# 5. Synchronize cached writes +# 6. Verfiy data is correctly written to the disk +# + +verify_runnable "global" + +if is_linux && [[ $(linux_version) -lt $(linux_version "4.5") ]]; then + log_unsupported "copy_file_range not available before Linux 4.5" +fi + +VDIR=$TEST_BASE_DIR/disk-bclone +VDEV="$VDIR/a" + +function cleanup +{ + datasetexists $TESTPOOL && destroy_pool $TESTPOOL + rm -rf $VDIR +} + +log_onexit cleanup + +log_assert "Test for clone, mmap and write scenario" + +log_must rm -rf $VDIR +log_must mkdir -p $VDIR +log_must truncate -s 1G $VDEV + +log_must zpool create -o feature@block_cloning=enabled $TESTPOOL $VDEV +log_must zfs create $TESTPOOL/$TESTFS + +log_must dd if=/dev/urandom of=/$TESTPOOL/$TESTFS/file bs=1M count=512 +log_must clone_mmap_write /$TESTPOOL/$TESTFS/file /$TESTPOOL/$TESTFS/clone + +sync_pool $TESTPOOL +log_must sync + +log_must have_same_content /$TESTPOOL/$TESTFS/file /$TESTPOOL/$TESTFS/clone +blocks=$(get_same_blocks $TESTPOOL/$TESTFS file $TESTPOOL/$TESTFS clone) +# FreeBSD's seq(1) leaves a trailing space, remove it with sed(1). +log_must [ "$blocks" = "$(seq -s " " 1 4095 | sed 's/ $//')" ] + +log_pass "Clone, mmap and write does not cause data corruption or " \ + "trigger panic" |