diff options
Diffstat (limited to 'sys-fs/zfs/files')
| -rw-r--r-- | sys-fs/zfs/files/2.1.1-fix-lseek-mmap.patch | 594 |
1 files changed, 594 insertions, 0 deletions
diff --git a/sys-fs/zfs/files/2.1.1-fix-lseek-mmap.patch b/sys-fs/zfs/files/2.1.1-fix-lseek-mmap.patch new file mode 100644 index 000000000000..2c3a66a97bf6 --- /dev/null +++ b/sys-fs/zfs/files/2.1.1-fix-lseek-mmap.patch @@ -0,0 +1,594 @@ +From de198f2d9507b6dcf3d0d8f037ba33940208733e Mon Sep 17 00:00:00 2001 +From: Brian Behlendorf <behlendorf1@llnl.gov> +Date: Sun, 7 Nov 2021 13:27:44 -0800 +Subject: [PATCH] Fix lseek(SEEK_DATA/SEEK_HOLE) mmap consistency + +When using lseek(2) to report data/holes memory mapped regions of +the file were ignored. This could result in incorrect results. +To handle this zfs_holey_common() was updated to asynchronously +writeback any dirty mmap(2) regions prior to reporting holes. + +Additionally, while not strictly required, the dn_struct_rwlock is +now held over the dirty check to prevent the dnode structure from +changing. This ensures that a clean dnode can't be dirtied before +the data/hole is located. The range lock is now also taken to +ensure the call cannot race with zfs_write(). + +Furthermore, the code was refactored to provide a dnode_is_dirty() +helper function which checks the dnode for any dirty records to +determine its dirtiness. + +Reviewed-by: Matthew Ahrens <mahrens@delphix.com> +Reviewed-by: Tony Hutter <hutter2@llnl.gov> +Reviewed-by: Rich Ercolani <rincebrain@gmail.com> +Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> +Issue #11900 +Closes #12724 +--- + configure.ac | 1 + + include/os/freebsd/spl/sys/vnode.h | 18 +++ + include/os/freebsd/zfs/sys/zfs_znode_impl.h | 3 +- + include/os/linux/zfs/sys/zfs_znode_impl.h | 1 + + include/sys/dnode.h | 1 + + man/man4/zfs.4 | 2 +- + module/zfs/dmu.c | 53 ++++--- + module/zfs/dnode.c | 20 +++ + module/zfs/zfs_vnops.c | 9 +- + tests/runfiles/common.run | 2 +- + tests/zfs-tests/cmd/Makefile.am | 1 + + tests/zfs-tests/cmd/mmap_seek/.gitignore | 1 + + tests/zfs-tests/cmd/mmap_seek/Makefile.am | 6 + + tests/zfs-tests/cmd/mmap_seek/mmap_seek.c | 147 ++++++++++++++++++ + tests/zfs-tests/include/commands.cfg | 1 + + tests/zfs-tests/include/tunables.cfg | 1 + + .../tests/functional/mmap/Makefile.am | 3 +- + .../functional/mmap/mmap_seek_001_pos.ksh | 67 ++++++++ + 18 files changed, 305 insertions(+), 32 deletions(-) + create mode 100644 tests/zfs-tests/cmd/mmap_seek/.gitignore + create mode 100644 tests/zfs-tests/cmd/mmap_seek/Makefile.am + create mode 100644 tests/zfs-tests/cmd/mmap_seek/mmap_seek.c + create mode 100755 tests/zfs-tests/tests/functional/mmap/mmap_seek_001_pos.ksh + +diff --git a/configure.ac b/configure.ac +index 6f34b210d2b..ebc7b276a64 100644 +--- a/configure.ac ++++ b/configure.ac +@@ -221,6 +221,7 @@ AC_CONFIG_FILES([ + tests/zfs-tests/cmd/mktree/Makefile + tests/zfs-tests/cmd/mmap_exec/Makefile + tests/zfs-tests/cmd/mmap_libaio/Makefile ++ tests/zfs-tests/cmd/mmap_seek/Makefile + tests/zfs-tests/cmd/mmapwrite/Makefile + tests/zfs-tests/cmd/nvlist_to_lua/Makefile + tests/zfs-tests/cmd/randfree_file/Makefile +diff --git a/include/os/freebsd/spl/sys/vnode.h b/include/os/freebsd/spl/sys/vnode.h +index 3670712a045..3bc8a18eeb7 100644 +--- a/include/os/freebsd/spl/sys/vnode.h ++++ b/include/os/freebsd/spl/sys/vnode.h +@@ -59,6 +59,8 @@ enum symfollow { NO_FOLLOW = NOFOLLOW }; + #include <sys/file.h> + #include <sys/filedesc.h> + #include <sys/syscallsubr.h> ++#include <sys/vm.h> ++#include <vm/vm_object.h> + + typedef struct vop_vector vnodeops_t; + #define VOP_FID VOP_VPTOFH +@@ -83,6 +85,22 @@ vn_is_readonly(vnode_t *vp) + #define vn_has_cached_data(vp) \ + ((vp)->v_object != NULL && \ + (vp)->v_object->resident_page_count > 0) ++ ++static __inline void ++vn_flush_cached_data(vnode_t *vp, boolean_t sync) ++{ ++#if __FreeBSD_version > 1300054 ++ if (vm_object_mightbedirty(vp->v_object)) { ++#else ++ if (vp->v_object->flags & OBJ_MIGHTBEDIRTY) { ++#endif ++ int flags = sync ? OBJPC_SYNC : 0; ++ zfs_vmobject_wlock(vp->v_object); ++ vm_object_page_clean(vp->v_object, 0, 0, flags); ++ zfs_vmobject_wunlock(vp->v_object); ++ } ++} ++ + #define vn_exists(vp) do { } while (0) + #define vn_invalid(vp) do { } while (0) + #define vn_renamepath(tdvp, svp, tnm, lentnm) do { } while (0) +diff --git a/include/os/freebsd/zfs/sys/zfs_znode_impl.h b/include/os/freebsd/zfs/sys/zfs_znode_impl.h +index 7d28bddbf51..4456046e6e4 100644 +--- a/include/os/freebsd/zfs/sys/zfs_znode_impl.h ++++ b/include/os/freebsd/zfs/sys/zfs_znode_impl.h +@@ -116,7 +116,8 @@ typedef struct zfs_soft_state { + #define Z_ISLNK(type) ((type) == VLNK) + #define Z_ISDIR(type) ((type) == VDIR) + +-#define zn_has_cached_data(zp) vn_has_cached_data(ZTOV(zp)) ++#define zn_has_cached_data(zp) vn_has_cached_data(ZTOV(zp)) ++#define zn_flush_cached_data(zp, sync) vn_flush_cached_data(ZTOV(zp), sync) + #define zn_rlimit_fsize(zp, uio) \ + vn_rlimit_fsize(ZTOV(zp), GET_UIO_STRUCT(uio), zfs_uio_td(uio)) + +diff --git a/include/os/linux/zfs/sys/zfs_znode_impl.h b/include/os/linux/zfs/sys/zfs_znode_impl.h +index 0a6273442b7..de46fc8f2bd 100644 +--- a/include/os/linux/zfs/sys/zfs_znode_impl.h ++++ b/include/os/linux/zfs/sys/zfs_znode_impl.h +@@ -71,6 +71,7 @@ extern "C" { + #define Z_ISDIR(type) S_ISDIR(type) + + #define zn_has_cached_data(zp) ((zp)->z_is_mapped) ++#define zn_flush_cached_data(zp, sync) write_inode_now(ZTOI(zp), sync) + #define zn_rlimit_fsize(zp, uio) (0) + + /* +diff --git a/include/sys/dnode.h b/include/sys/dnode.h +index e7cccd044ab..3f5fcc958c3 100644 +--- a/include/sys/dnode.h ++++ b/include/sys/dnode.h +@@ -425,6 +425,7 @@ boolean_t dnode_add_ref(dnode_t *dn, void *ref); + void dnode_rele(dnode_t *dn, void *ref); + void dnode_rele_and_unlock(dnode_t *dn, void *tag, boolean_t evicting); + int dnode_try_claim(objset_t *os, uint64_t object, int slots); ++boolean_t dnode_is_dirty(dnode_t *dn); + void dnode_setdirty(dnode_t *dn, dmu_tx_t *tx); + void dnode_set_dirtyctx(dnode_t *dn, dmu_tx_t *tx, void *tag); + void dnode_sync(dnode_t *dn, dmu_tx_t *tx); +diff --git a/man/man4/zfs.4 b/man/man4/zfs.4 +index d7fc31bfde1..a136690c76e 100644 +--- a/man/man4/zfs.4 ++++ b/man/man4/zfs.4 +@@ -1586,7 +1586,7 @@ Allow no-operation writes. + The occurrence of nopwrites will further depend on other pool properties + .Pq i.a. the checksumming and compression algorithms . + . +-.It Sy zfs_dmu_offset_next_sync Ns = Ns Sy 0 Ns | ns 1 Pq int ++.It Sy zfs_dmu_offset_next_sync Ns = Ns Sy 0 Ns | Ns 1 Pq int + Enable forcing TXG sync to find holes. + When enabled forces ZFS to act like prior versions when + .Sy SEEK_HOLE No or Sy SEEK_DATA +diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c +index b29d82fd793..f12c5eda8b5 100644 +--- a/module/zfs/dmu.c ++++ b/module/zfs/dmu.c +@@ -2093,42 +2093,41 @@ int + dmu_offset_next(objset_t *os, uint64_t object, boolean_t hole, uint64_t *off) + { + dnode_t *dn; +- int i, err; +- boolean_t clean = B_TRUE; ++ int err; + ++restart: + err = dnode_hold(os, object, FTAG, &dn); + if (err) + return (err); + +- /* +- * Check if dnode is dirty +- */ +- for (i = 0; i < TXG_SIZE; i++) { +- if (multilist_link_active(&dn->dn_dirty_link[i])) { +- clean = B_FALSE; +- break; +- } +- } ++ rw_enter(&dn->dn_struct_rwlock, RW_READER); + +- /* +- * If compatibility option is on, sync any current changes before +- * we go trundling through the block pointers. +- */ +- if (!clean && zfs_dmu_offset_next_sync) { +- clean = B_TRUE; +- dnode_rele(dn, FTAG); +- txg_wait_synced(dmu_objset_pool(os), 0); +- err = dnode_hold(os, object, FTAG, &dn); +- if (err) +- return (err); +- } ++ if (dnode_is_dirty(dn)) { ++ /* ++ * If the zfs_dmu_offset_next_sync module option is enabled ++ * then strict hole reporting has been requested. Dirty ++ * dnodes must be synced to disk to accurately report all ++ * holes. When disabled (the default) dirty dnodes are ++ * reported to not have any holes which is always safe. ++ * ++ * When called by zfs_holey_common() the zp->z_rangelock ++ * is held to prevent zfs_write() and mmap writeback from ++ * re-dirtying the dnode after txg_wait_synced(). ++ */ ++ if (zfs_dmu_offset_next_sync) { ++ rw_exit(&dn->dn_struct_rwlock); ++ dnode_rele(dn, FTAG); ++ txg_wait_synced(dmu_objset_pool(os), 0); ++ goto restart; ++ } + +- if (clean) +- err = dnode_next_offset(dn, +- (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0); +- else + err = SET_ERROR(EBUSY); ++ } else { ++ err = dnode_next_offset(dn, DNODE_FIND_HAVELOCK | ++ (hole ? DNODE_FIND_HOLE : 0), off, 1, 1, 0); ++ } + ++ rw_exit(&dn->dn_struct_rwlock); + dnode_rele(dn, FTAG); + + return (err); +diff --git a/module/zfs/dnode.c b/module/zfs/dnode.c +index 900240479c7..6f87f49f89f 100644 +--- a/module/zfs/dnode.c ++++ b/module/zfs/dnode.c +@@ -1648,6 +1648,26 @@ dnode_try_claim(objset_t *os, uint64_t object, int slots) + slots, NULL, NULL)); + } + ++/* ++ * Checks if the dnode contains any uncommitted dirty records. ++ */ ++boolean_t ++dnode_is_dirty(dnode_t *dn) ++{ ++ mutex_enter(&dn->dn_mtx); ++ ++ for (int i = 0; i < TXG_SIZE; i++) { ++ if (list_head(&dn->dn_dirty_records[i]) != NULL) { ++ mutex_exit(&dn->dn_mtx); ++ return (B_TRUE); ++ } ++ } ++ ++ mutex_exit(&dn->dn_mtx); ++ ++ return (B_FALSE); ++} ++ + void + dnode_setdirty(dnode_t *dn, dmu_tx_t *tx) + { +diff --git a/module/zfs/zfs_vnops.c b/module/zfs/zfs_vnops.c +index a83f0b02ab5..7cbb70f499a 100644 +--- a/module/zfs/zfs_vnops.c ++++ b/module/zfs/zfs_vnops.c +@@ -85,6 +85,7 @@ zfs_fsync(znode_t *zp, int syncflag, cred_t *cr) + static int + zfs_holey_common(znode_t *zp, ulong_t cmd, loff_t *off) + { ++ zfs_locked_range_t *lr; + uint64_t noff = (uint64_t)*off; /* new offset */ + uint64_t file_sz; + int error; +@@ -100,12 +101,18 @@ zfs_holey_common(znode_t *zp, ulong_t cmd, loff_t *off) + else + hole = B_FALSE; + ++ /* Flush any mmap()'d data to disk */ ++ if (zn_has_cached_data(zp)) ++ zn_flush_cached_data(zp, B_FALSE); ++ ++ lr = zfs_rangelock_enter(&zp->z_rangelock, 0, file_sz, RL_READER); + error = dmu_offset_next(ZTOZSB(zp)->z_os, zp->z_id, hole, &noff); ++ zfs_rangelock_exit(lr); + + if (error == ESRCH) + return (SET_ERROR(ENXIO)); + +- /* file was dirty, so fall back to using generic logic */ ++ /* File was dirty, so fall back to using generic logic */ + if (error == EBUSY) { + if (hole) + *off = file_sz; +diff --git a/tests/runfiles/common.run b/tests/runfiles/common.run +index 7f7d161be35..9f181b53e15 100644 +--- a/tests/runfiles/common.run ++++ b/tests/runfiles/common.run +@@ -675,7 +675,7 @@ tests = ['migration_001_pos', 'migration_002_pos', 'migration_003_pos', + tags = ['functional', 'migration'] + + [tests/functional/mmap] +-tests = ['mmap_write_001_pos', 'mmap_read_001_pos'] ++tests = ['mmap_write_001_pos', 'mmap_read_001_pos', 'mmap_seek_001_pos'] + tags = ['functional', 'mmap'] + + [tests/functional/mount] +diff --git a/tests/zfs-tests/cmd/Makefile.am b/tests/zfs-tests/cmd/Makefile.am +index 2b965ca7000..d1c29fcd1c6 100644 +--- a/tests/zfs-tests/cmd/Makefile.am ++++ b/tests/zfs-tests/cmd/Makefile.am +@@ -19,6 +19,7 @@ SUBDIRS = \ + mktree \ + mmap_exec \ + mmap_libaio \ ++ mmap_seek \ + mmapwrite \ + nvlist_to_lua \ + randwritecomp \ +diff --git a/tests/zfs-tests/cmd/mmap_seek/.gitignore b/tests/zfs-tests/cmd/mmap_seek/.gitignore +new file mode 100644 +index 00000000000..6b05a791750 +--- /dev/null ++++ b/tests/zfs-tests/cmd/mmap_seek/.gitignore +@@ -0,0 +1 @@ ++/mmap_seek +diff --git a/tests/zfs-tests/cmd/mmap_seek/Makefile.am b/tests/zfs-tests/cmd/mmap_seek/Makefile.am +new file mode 100644 +index 00000000000..b938931125f +--- /dev/null ++++ b/tests/zfs-tests/cmd/mmap_seek/Makefile.am +@@ -0,0 +1,6 @@ ++include $(top_srcdir)/config/Rules.am ++ ++pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/bin ++ ++pkgexec_PROGRAMS = mmap_seek ++mmap_seek_SOURCES = mmap_seek.c +diff --git a/tests/zfs-tests/cmd/mmap_seek/mmap_seek.c b/tests/zfs-tests/cmd/mmap_seek/mmap_seek.c +new file mode 100644 +index 00000000000..f476e1dba9a +--- /dev/null ++++ b/tests/zfs-tests/cmd/mmap_seek/mmap_seek.c +@@ -0,0 +1,147 @@ ++/* ++ * 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) 2021 by Lawrence Livermore National Security, LLC. ++ */ ++ ++#include <unistd.h> ++#include <fcntl.h> ++#include <stdio.h> ++#include <stdlib.h> ++#include <string.h> ++#include <sys/mman.h> ++#include <errno.h> ++ ++static void ++seek_data(int fd, off_t offset, off_t expected) ++{ ++ off_t data_offset = lseek(fd, offset, SEEK_DATA); ++ if (data_offset != expected) { ++ fprintf(stderr, "lseek(fd, %d, SEEK_DATA) = %d (expected %d)\n", ++ (int)offset, (int)data_offset, (int)expected); ++ exit(2); ++ } ++} ++ ++static void ++seek_hole(int fd, off_t offset, off_t expected) ++{ ++ off_t hole_offset = lseek(fd, offset, SEEK_HOLE); ++ if (hole_offset != expected) { ++ fprintf(stderr, "lseek(fd, %d, SEEK_HOLE) = %d (expected %d)\n", ++ (int)offset, (int)hole_offset, (int)expected); ++ exit(2); ++ } ++} ++ ++int ++main(int argc, char **argv) ++{ ++ char *execname = argv[0]; ++ char *file_path = argv[1]; ++ char *buf = NULL; ++ int err; ++ ++ if (argc != 4) { ++ (void) printf("usage: %s <file name> <file size> " ++ "<block size>\n", argv[0]); ++ exit(1); ++ } ++ ++ int fd = open(file_path, O_RDWR | O_CREAT, 0666); ++ if (fd == -1) { ++ (void) fprintf(stderr, "%s: %s: ", execname, file_path); ++ perror("open"); ++ exit(2); ++ } ++ ++ off_t file_size = atoi(argv[2]); ++ off_t block_size = atoi(argv[3]); ++ ++ if (block_size * 2 > file_size) { ++ (void) fprintf(stderr, "file size must be at least " ++ "double the block size\n"); ++ exit(2); ++ } ++ ++ err = ftruncate(fd, file_size); ++ if (err == -1) { ++ perror("ftruncate"); ++ exit(2); ++ } ++ ++ if ((buf = mmap(NULL, file_size, PROT_READ | PROT_WRITE, ++ MAP_SHARED, fd, 0)) == MAP_FAILED) { ++ perror("mmap"); ++ exit(2); ++ } ++ ++ /* Verify the file is sparse and reports no data. */ ++ seek_data(fd, 0, -1); ++ ++ /* Verify the file is reported as a hole. */ ++ seek_hole(fd, 0, 0); ++ ++ /* Verify search beyond end of file is an error. */ ++ seek_data(fd, 2 * file_size, -1); ++ seek_hole(fd, 2 * file_size, -1); ++ ++ /* Dirty the first byte. */ ++ memset(buf, 'a', 1); ++ seek_data(fd, 0, 0); ++ seek_data(fd, block_size, -1); ++ seek_hole(fd, 0, block_size); ++ seek_hole(fd, block_size, block_size); ++ ++ /* Dirty the first half of the file. */ ++ memset(buf, 'b', file_size / 2); ++ seek_data(fd, 0, 0); ++ seek_data(fd, block_size, block_size); ++ seek_hole(fd, 0, P2ROUNDUP(file_size / 2, block_size)); ++ seek_hole(fd, block_size, P2ROUNDUP(file_size / 2, block_size)); ++ ++ /* Dirty the whole file. */ ++ memset(buf, 'c', file_size); ++ seek_data(fd, 0, 0); ++ seek_data(fd, file_size * 3 / 4, ++ P2ROUNDUP(file_size * 3 / 4, block_size)); ++ seek_hole(fd, 0, file_size); ++ seek_hole(fd, file_size / 2, file_size); ++ ++ /* Punch a hole (required compression be enabled). */ ++ memset(buf + block_size, 0, block_size); ++ seek_data(fd, 0, 0); ++ seek_data(fd, block_size, 2 * block_size); ++ seek_hole(fd, 0, block_size); ++ seek_hole(fd, block_size, block_size); ++ seek_hole(fd, 2 * block_size, file_size); ++ ++ err = munmap(buf, file_size); ++ if (err == -1) { ++ perror("munmap"); ++ exit(2); ++ } ++ ++ close(fd); ++ ++ return (0); ++} +diff --git a/tests/zfs-tests/include/commands.cfg b/tests/zfs-tests/include/commands.cfg +index 1ec73f25bae..4497a6248b4 100644 +--- a/tests/zfs-tests/include/commands.cfg ++++ b/tests/zfs-tests/include/commands.cfg +@@ -209,6 +209,7 @@ export ZFSTEST_FILES='badsend + mktree + mmap_exec + mmap_libaio ++ mmap_seek + mmapwrite + nvlist_to_lua + randfree_file +diff --git a/tests/zfs-tests/include/tunables.cfg b/tests/zfs-tests/include/tunables.cfg +index 56d430a3987..fff43e46916 100644 +--- a/tests/zfs-tests/include/tunables.cfg ++++ b/tests/zfs-tests/include/tunables.cfg +@@ -33,6 +33,7 @@ DEADMAN_FAILMODE deadman.failmode zfs_deadman_failmode + DEADMAN_SYNCTIME_MS deadman.synctime_ms zfs_deadman_synctime_ms + DEADMAN_ZIOTIME_MS deadman.ziotime_ms zfs_deadman_ziotime_ms + DISABLE_IVSET_GUID_CHECK disable_ivset_guid_check zfs_disable_ivset_guid_check ++DMU_OFFSET_NEXT_SYNC dmu_offset_next_sync zfs_dmu_offset_next_sync + INITIALIZE_CHUNK_SIZE initialize_chunk_size zfs_initialize_chunk_size + INITIALIZE_VALUE initialize_value zfs_initialize_value + KEEP_LOG_SPACEMAPS_AT_EXPORT keep_log_spacemaps_at_export zfs_keep_log_spacemaps_at_export +diff --git a/tests/zfs-tests/tests/functional/mmap/Makefile.am b/tests/zfs-tests/tests/functional/mmap/Makefile.am +index 2adc398b8c0..b26791ee7ce 100644 +--- a/tests/zfs-tests/tests/functional/mmap/Makefile.am ++++ b/tests/zfs-tests/tests/functional/mmap/Makefile.am +@@ -4,7 +4,8 @@ dist_pkgdata_SCRIPTS = \ + cleanup.ksh \ + mmap_read_001_pos.ksh \ + mmap_write_001_pos.ksh \ +- mmap_libaio_001_pos.ksh ++ mmap_libaio_001_pos.ksh \ ++ mmap_seek_001_pos.ksh + + dist_pkgdata_DATA = \ + mmap.cfg +diff --git a/tests/zfs-tests/tests/functional/mmap/mmap_seek_001_pos.ksh b/tests/zfs-tests/tests/functional/mmap/mmap_seek_001_pos.ksh +new file mode 100755 +index 00000000000..6188549ad8d +--- /dev/null ++++ b/tests/zfs-tests/tests/functional/mmap/mmap_seek_001_pos.ksh +@@ -0,0 +1,67 @@ ++#!/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) 2021 by Lawrence Livermore National Security, LLC. ++# ++ ++. $STF_SUITE/include/libtest.shlib ++. $STF_SUITE/tests/functional/mmap/mmap.cfg ++ ++# ++# DESCRIPTION: ++# lseek() data/holes for an mmap()'d file. ++# ++# STRATEGY: ++# 1. Enable compression and hole reporting for dirty files. ++# 2. Call mmap_seek binary test case for various record sizes. ++# ++ ++verify_runnable "global" ++ ++function cleanup ++{ ++ log_must zfs set compression=off $TESTPOOL/$TESTFS ++ log_must zfs set recordsize=128k $TESTPOOL/$TESTFS ++ log_must rm -f $TESTDIR/test-mmap-file ++ log_must set_tunable64 DMU_OFFSET_NEXT_SYNC $dmu_offset_next_sync ++} ++ ++log_assert "lseek() data/holes for an mmap()'d file." ++ ++log_onexit cleanup ++ ++# Enable hole reporting for dirty files. ++typeset dmu_offset_next_sync=$(get_tunable DMU_OFFSET_NEXT_SYNC) ++log_must set_tunable64 DMU_OFFSET_NEXT_SYNC 1 ++ ++# Compression must be enabled to convert zero'd blocks to holes. ++# This behavior is checked by the mmap_seek test. ++log_must zfs set compression=on $TESTPOOL/$TESTFS ++ ++for bs in 4096 8192 16384 32768 65536 131072; do ++ log_must zfs set recordsize=$bs $TESTPOOL/$TESTFS ++ log_must mmap_seek $TESTDIR/test-mmap-file $((1024*1024)) $bs ++ log_must rm $TESTDIR/test-mmap-file ++done ++ ++log_pass "lseek() data/holes for an mmap()'d file succeeded." |