Paul Dagnelie 32d41fb73a OpenZFS 7176 - Yet another hole birth issue ... This is another bug in the long line of hole-birth related issues. In this particular case, it was discovered that a previous hole-birth fix (illumos bug 6513, commit bc77ba73) did not cover as many cases as we thought it did. While the issue worked in the case of hole-punching (writing zeroes to a large part of a file), it did not deal with truncation, and then writing beyond the new end of the file. The problem is that dbuf_findbp will return ENOENT if the block it's trying to find is beyond the end of the file. If that happens, we assume there is no birth time, and so we lose that information when we write out new blkptrs. We should teach dbuf_findbp to look for things that are beyond the current end, but not beyond the absolute end of the file. Authored by: Paul Dagnelie <pcd@delphix.com> Reviewed by: Matthew Ahrens mahrens@delphix.com Reviewed by: George Wilson george.wilson@delphix.com Ported-by: kernelOfTruth <kerneloftruth@gmail.com> Signed-off-by: Boris Protopopov <boris.protopopov@actifio.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> OpenZFS-issue: https://www.illumos.org/issues/7176 OpenZFS-commit: https://github.com/openzfs/openzfs/pull/173/commits/8b9f3ad Upstream-bugs: DLPX-46009 Porting notes: - Fix ISO C90 mixed declaration error in dbuf.c ( int nlevels, epbs; ) ; keep previous position of the initialization		2016-08-18 09:26:44 -07:00
..
arc.c	arc_meta_limit should be updated when arc_max is changed.	2016-08-02 13:43:36 -07:00
blkptr.c	Illumos 4757, 4913	2014-08-01 14:28:05 -07:00
bplist.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
bpobj.c	Illumos 5810 - zdb should print details of bpobj	2015-05-11 15:10:24 -07:00
bptree.c	Illumos 5960, 5925	2016-01-08 15:08:19 -08:00
bqueue.c	Allow 16M send/recv blocks	2016-01-08 20:23:23 -05:00
dbuf_stats.c	Fix dbuf_stats_hash_table_data race	2016-07-14 16:25:04 -07:00
dbuf.c	OpenZFS 7176 - Yet another hole birth issue	2016-08-18 09:26:44 -07:00
ddt_zap.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
ddt.c	Handle zap_lookup() failure in ddt_object_load()	2015-08-19 14:32:50 -07:00
dmu_diff.c	Illumos 5960, 5925	2016-01-08 15:08:19 -08:00
dmu_object.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
dmu_objset.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dmu_send.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dmu_traverse.c	Add tunable to ignore hole_birth	2016-08-15 09:52:56 -07:00
dmu_tx.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
dmu_zfetch.c	Illumos 6281 - prefetching should apply to 1MB reads	2016-01-12 13:51:27 -08:00
dmu.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
dnode_sync.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
dnode.c	Limit the amount of dnode metadata in the ARC	2016-07-25 15:26:38 -07:00
dsl_bookmark.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dsl_dataset.c	Rework of fletcher_4 module	2016-08-16 14:11:55 -07:00
dsl_deadlist.c	Handle damaged blk_birth in dsl_deadlist_insert()	2015-12-15 16:12:31 -08:00
dsl_deleg.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dsl_destroy.c	OpenZFS 2605, 6980, 6902	2016-06-28 13:47:02 -07:00
dsl_dir.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dsl_pool.c	Fix self-healing IO prior to dsl_pool_init() completion	2016-05-27 14:11:25 -07:00
dsl_prop.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
dsl_scan.c	OpenZFS 5997 - FRU field not set during pool creation and never updated	2016-08-12 13:06:48 -07:00
dsl_synctask.c	Illumos 4951 - ZFS administrative commands should use reserved space	2015-05-04 09:41:10 -07:00
dsl_userhold.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
fm.c	Fix indefinite article	2016-08-11 11:23:49 -07:00
gzip.c	cstyle: Resolve C style issues	2013-12-18 16:46:35 -08:00
lz4.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
lzjb.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
Makefile.in	Add RAID-Z routines for SSE2 instruction set, in x86_64 mode.	2016-07-13 10:24:55 -07:00
metaslab.c	Fix gcc self-comparison warning	2016-08-02 13:14:18 -07:00
multilist.c	Identify locks flagged by lockdep	2015-12-22 10:21:33 -08:00
pathname.c	Add pn_alloc()/pn_free() functions	2016-04-21 09:49:25 -07:00
policy.c	Fix NFS credential	2016-06-21 09:58:37 -07:00
range_tree.c	Illumos 5163 - arc should reap range_seg_cache	2015-06-25 08:58:16 -07:00
refcount.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
rrwlock.c	Illumos 5008 - lock contention (rrw_exit) while running a read only load	2015-07-06 09:34:13 -07:00
sa.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
sha256.c	Add linux sha2 support	2010-08-31 13:41:59 -07:00
spa_boot.c	Add linux kernel module support	2010-08-31 13:41:58 -07:00
spa_config.c	OpenZFS 5997 - FRU field not set during pool creation and never updated	2016-08-12 13:06:48 -07:00
spa_errlog.c	Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t	2014-08-06 14:48:41 -07:00
spa_history.c	Fix indefinite article	2016-08-11 11:23:49 -07:00
spa_misc.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
spa_stats.c	Illumos 5369 - arc flags should be an enum	2015-06-11 10:27:25 -07:00
spa.c	OpenZFS 5997 - FRU field not set during pool creation and never updated	2016-08-12 13:06:48 -07:00
space_map.c	Illumos 5960, 5925	2016-01-08 15:08:19 -08:00
space_reftree.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
trace.c	OpenZFS 6531 - Provide mechanism to artificially limit disk performance	2016-05-26 10:11:51 -07:00
txg.c	txg visibility code should not execute under tc_open_lock	2016-07-27 14:11:13 -07:00
uberblock.c	Illumos 5347 - idle pool may run itself out of space	2015-07-14 10:35:21 -07:00
unique.c	Change KM_PUSHPAGE -> KM_SLEEP	2015-01-16 14:41:26 -08:00
vdev_cache.c	Illumos 5045 - use atomic_{inc,dec}_* instead of atomic_add_*	2016-01-15 15:38:36 -08:00
vdev_disk.c	Remove custom root pool import code	2016-08-11 11:19:34 -07:00
vdev_file.c	OpenZFS 6531 - Provide mechanism to artificially limit disk performance	2016-05-26 10:11:51 -07:00
vdev_label.c	Fix memleak in vdev_config_generate_stats	2016-05-31 16:05:21 -07:00
vdev_mirror.c	FreeBSD r256956: Improve ZFS N-way mirror read performance by using load and locality information.	2016-02-26 11:24:35 -08:00
vdev_missing.c	Illumos #5244 - zio pipeline callers should explicitly invoke next stage	2015-04-30 15:07:47 -07:00
vdev_queue.c	Fix self-healing IO prior to dsl_pool_init() completion	2016-05-27 14:11:25 -07:00
vdev_raidz_math_avx2.c	Fixes and enhancements of SIMD raidz parity	2016-07-19 16:43:07 -07:00
vdev_raidz_math_impl.h	SIMD implementation of vdev_raidz generate and reconstruct routines	2016-06-21 09:27:26 -07:00
vdev_raidz_math_scalar.c	Fixes and enhancements of SIMD raidz parity	2016-07-19 16:43:07 -07:00
vdev_raidz_math_sse2.c	Add RAID-Z routines for SSE2 instruction set, in x86_64 mode.	2016-07-13 10:24:55 -07:00
vdev_raidz_math_ssse3.c	Fixes and enhancements of SIMD raidz parity	2016-07-19 16:43:07 -07:00
vdev_raidz_math.c	RAIDZ parity kstat rework	2016-07-19 16:43:07 -07:00
vdev_raidz.c	Build user-space with different gcc optimization levels	2016-08-09 14:40:35 -07:00
vdev_root.c	Illumos #3598	2013-10-31 14:58:04 -07:00
vdev.c	Fix incorrect pool state after import	2016-08-12 13:46:51 -07:00
zap_leaf.c	Illumos 5314 - Remove "dbuf phys" db->db_data pointer aliases in ZFS	2015-04-28 16:25:20 -07:00
zap_micro.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
zap.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
zfeature_common.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
zfeature.c	Revert "zhack: Add 'feature disable' command"	2016-05-17 11:52:07 -07:00
zfs_acl.c	Fix interaction between userns uid/gid and SA	2016-08-08 10:47:43 -07:00
zfs_byteswap.c	Add linux kernel module support	2010-08-31 13:41:58 -07:00
zfs_ctldir.c	Remove znode's z_uid/z_gid member	2016-07-25 13:21:49 -07:00
zfs_debug.c	Add dbgmsg kstat	2015-09-04 16:08:14 -07:00
zfs_dir.c	Remove znode's z_uid/z_gid member	2016-07-25 13:21:49 -07:00
zfs_fm.c	OpenZFS 5997 - FRU field not set during pool creation and never updated	2016-08-12 13:06:48 -07:00
zfs_fuid.c	Remove znode's z_uid/z_gid member	2016-07-25 13:21:49 -07:00
zfs_ioctl.c	Fix zfs_allow_log_destroy() NULL dereference	2016-07-29 15:34:12 -07:00
zfs_log.c	Remove znode's z_uid/z_gid member	2016-07-25 13:21:49 -07:00
zfs_onexit.c	zfsdev_getminor() should check for invalid file handles	2015-06-22 17:02:13 -07:00
zfs_replay.c	Implement large_dnode pool feature	2016-06-24 13:13:21 -07:00
zfs_rlock.c	Remove dummy znode from zvol_state	2016-05-17 10:29:02 -07:00
zfs_sa.c	Use native inode->i_nlink instead of znode->z_links	2016-07-14 16:25:34 -07:00
zfs_vfsops.c	Remove znode's z_uid/z_gid member	2016-07-25 13:21:49 -07:00
zfs_vnops.c	Fix interaction between userns uid/gid and SA	2016-08-08 10:47:43 -07:00
zfs_znode.c	Move assignment of i_blkbits field	2016-07-29 15:34:12 -07:00
zil.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
zio_checksum.c	Illumos 4757, 4913	2014-08-01 14:28:05 -07:00
zio_compress.c	Illumos 5661 - ZFS: "compression = on" should use lz4 if feature is enabled	2015-07-10 12:11:45 -07:00
zio_inject.c	OpenZFS 6531 - Provide mechanism to artificially limit disk performance	2016-05-26 10:11:51 -07:00
zio.c	Fix zdb crash with 4K-only devices	2016-07-27 13:38:46 -07:00
zle.c	Update core ZFS code from build 121 to build 141.	2010-05-28 13:45:14 -07:00
zpl_ctldir.c	Use file_dentry and file_inode wrappers	2016-08-11 12:06:37 -07:00
zpl_export.c	zfsctl: No need to sync ctldir inodes	2015-08-31 13:54:39 -07:00
zpl_file.c	Use file_dentry and file_inode wrappers	2016-08-11 12:06:37 -07:00
zpl_inode.c	OpenZFS 6314 - buffer overflow in dsl_dataset_name	2016-06-28 13:47:03 -07:00
zpl_super.c	Fix memleak in zpl_parse_options	2016-05-31 16:04:26 -07:00
zpl_xattr.c	Linux 4.7 compat: fix zpl_get_acl returns invalid acl pointer	2016-08-09 10:03:04 -07:00
zrlock.c	Illumos 5812 - assertion failed in zrl_tryenter(): zr_owner==NULL	2015-04-30 14:43:40 -07:00
zvol.c	Linux 4.8 compat: Fix removal of bio->bi_rw member	2016-08-11 11:19:34 -07:00