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9b77d1c958
freebsd-nq/module/zfs
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Chunwei Chen 9b77d1c958 Fix nfs snapdir automount 
The current implementation for allowing nfs to access snapdir is very buggy.
It uses a special fh for snapdirs, such that the next time nfsd does
fh_to_dentry, it actually returns the root inode inside the snapshot. So nfsd
never knows it cross a mountpoint.

The problem is that nfsd will not hold a reference on the vfsmount of the
snapshot. This cause auto unmounter to unmount the snapshot even though nfs is
still holding dentries in it.

To fix this, we return the inode for the snapdirs themselves. However, we also
trigger automount upon fh_to_dentry, and return ESTALE so nfsd will revalidate
and see the mountpoint and do crossmnt.

Because nfsd will now be aware that these are different filesystems users
must add crossmnt to their export options to access snapshot directories.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #3794
Closes #4716
Closes #5810 
Closes #5833
2017-03-08 09:26:33 -08:00
..
abd.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
arc.c OpenZFS 7867 - ARC space accounting leak 2017-03-07 18:14:32 -08:00
blkptr.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c panic in bpobj_space(): null pointer dereference 2017-02-09 10:19:12 -08:00
bptree.c OpenZFS 7082 - bptree_iterate() passes wrong args to zfs_dbgmsg() 2017-01-17 14:49:24 -08:00
bqueue.c Fix coverity defects: CID 147565-147567 2016-10-07 13:19:43 -07:00
dbuf_stats.c OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
dbuf.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c Cache ddt_get_dedup_dspace() value if there was no ddt changes 2016-12-02 16:59:35 -07:00
dmu_diff.c OpenZFS 6950 - ARC should cache compressed data 2016-09-13 09:58:33 -07:00
dmu_object.c Clean up by-dnode code in dmu_tx.c 2017-02-24 13:34:26 -08:00
dmu_objset.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dmu_send.c OpenZFS 7247 - zfs receive of deduplicated stream fails 2017-02-04 09:10:24 -08:00
dmu_traverse.c Add TASKQID_INVALID 2016-11-02 12:14:45 -07:00
dmu_tx.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dmu_zfetch.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
dmu.c Add missing module_param for zfs_per_txg_dirty_frees_percent 2017-02-07 09:44:03 -08:00
dnode_sync.c OpenZFS 7580 - ztest failure in dbuf_read_impl 2017-01-28 12:11:09 -08:00
dnode.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dsl_bookmark.c OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
dsl_dataset.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dsl_deadlist.c panic in bpobj_space(): null pointer dereference 2017-02-09 10:19:12 -08:00
dsl_deleg.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
dsl_destroy.c OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs 2017-01-27 11:43:42 -08:00
dsl_dir.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
dsl_pool.c OpenZFS 7199 - dsl_dataset_rollback_sync may try to free already free blocks 2017-02-24 11:05:33 -08:00
dsl_prop.c Fix dsl_props_set_sync_impl to work with nested nvlist 2016-12-20 18:46:59 -08:00
dsl_scan.c OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs 2017-01-27 11:43:42 -08:00
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
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
gzip.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
lz4.c Fix spelling 2017-01-03 11:31:18 -06:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
metaslab.c OpenZFS 7072 - zfs fails to expand if lun added when os is in shutdown state 2017-02-01 13:14:02 -08:00
multilist.c zfs_arc_num_sublists_per_state should be common to all multilists 2017-02-15 15:49:33 -08:00
pathname.c Add pn_alloc()/pn_free() functions 2016-04-21 09:49:25 -07:00
policy.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
range_tree.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
refcount.c Linux 4.11 compat: avoid refcount_t name conflict 2017-02-28 16:10:18 -08:00
rrwlock.c Fix spelling 2017-01-03 11:31:18 -06:00
sa.c OpenZFS 6676 - Race between unique_insert() and unique_remove() causes ZFS fsid change 2017-01-26 14:43:28 -08:00
sha256.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
skein_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
spa_boot.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_config.c Fix spelling 2017-01-03 11:31:18 -06:00
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 OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
spa_stats.c Fix spelling 2017-01-03 11:31:18 -06:00
spa.c Fix incorrect spare vdev state after replacing 2017-02-23 10:32:15 -08:00
space_map.c OpenZFS 7303 - dynamic metaslab selection 2017-01-12 11:52:56 -08:00
space_reftree.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
trace.c OpenZFS 6531 - Provide mechanism to artificially limit disk performance 2016-05-26 10:11:51 -07:00
txg.c Refactor txg history kstat 2016-12-02 16:57:49 -07:00
uberblock.c Illumos 5347 - idle pool may run itself out of space 2015-07-14 10:35:21 -07:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
vdev_disk.c OpenZFS 7448 - ZFS doesn't notice when disk vdevs have no write cache 2017-02-04 09:23:50 -08:00
vdev_file.c Use a dedicated taskq for vdev_file 2016-12-21 10:47:15 -08:00
vdev_label.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
vdev_mirror.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -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 Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz_math_aarch64_neon_common.h ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_aarch64_neon.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_aarch64_neonx2.c ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx512bw.c ABD: Adapt avx512bw raidz assembly 2016-12-15 17:31:33 -08:00
vdev_raidz_math_avx512f.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz_math_impl.h codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_scalar.c ABD Vectorized raidz 2016-11-29 14:34:33 -08:00
vdev_raidz_math_sse2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_ssse3.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz.c ABD style cleanups 2017-02-24 12:05:42 -08:00
vdev_root.c Illumos #3598 2013-10-31 14:58:04 -07:00
vdev.c OpenZFS 7072 - zfs fails to expand if lun added when os is in shutdown state 2017-02-01 13:14:02 -08:00
zap_leaf.c OpenZFS 1300 - filename normalization doesn't work for removes 2017-02-02 14:13:41 -08:00
zap_micro.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
zap.c OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
zfeature_common.c OpenZFS 6586 - Whitespace inconsistencies in the spa feature dependency arrays in zfeature_common.c 2017-01-17 14:46:28 -08:00
zfeature.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_acl.c Fix unlinked file cannot do xattr operations 2016-11-04 10:46:40 -07:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Fix nfs snapdir automount 2017-03-08 09:26:33 -08:00
zfs_debug.c OpenZFS 7277 - zdb should be able to print zfs_dbgmsg's 2017-01-28 12:16:43 -08:00
zfs_dir.c OpenZFS 7812 - Remove gender specific language 2017-02-24 11:07:04 -08:00
zfs_fm.c Fix coverity defects: CID 147626, 147628 2016-11-08 14:28:17 -08:00
zfs_fuid.c Fix coverity defects 2016-09-21 18:09:00 -07:00
zfs_ioctl.c OpenZFS 7019 - zfsdev_ioctl skips secpolicy when FKIOCTL is set 2017-01-31 10:24:23 -08:00
zfs_log.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_onexit.c zfsdev_getminor() should check for invalid file handles 2015-06-22 17:02:13 -07:00
zfs_replay.c OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zfs_rlock.c Fix spelling 2017-01-03 11:31:18 -06:00
zfs_sa.c Convert zio_buf_alloc() consumers 2016-11-30 16:18:20 -07:00
zfs_vfsops.c Fix nfs snapdir automount 2017-03-08 09:26:33 -08:00
zfs_vnops.c Fix nfs snapdir automount 2017-03-08 09:26:33 -08:00
zfs_znode.c Use inode_set_flags when available 2016-12-16 13:54:51 -08:00
zil.c Fix spelling 2017-01-03 11:31:18 -06:00
zio_checksum.c Use fletcher_4 routines natively with abd_iterate_func() 2017-02-01 09:34:22 -08:00
zio_compress.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zio_inject.c Compile zio.h and zio_impl.h mutual include 2016-12-01 16:36:25 -07:00
zio.c OpenZFS 7812 - Remove gender specific language 2017-02-24 11:07:04 -08:00
zle.c Update core ZFS code from build 121 to build 141. 2010-05-28 13:45:14 -07:00
zpl_ctldir.c Linux 4.9 compat: iops->rename() wants flags 2016-10-20 09:39:09 -07:00
zpl_export.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zpl_file.c Fix loop device becomes read-only 2017-03-06 09:20:20 -08:00
zpl_inode.c Fix off by one in zpl_lookup 2017-02-11 12:42:17 -08:00
zpl_super.c Fix memleak in zpl_parse_options 2016-05-31 16:04:26 -07:00
zpl_xattr.c Fix spelling 2017-01-03 11:31:18 -06:00
zrlock.c OpenZFS 3746 - ZRLs are racy 2017-01-23 10:35:58 -08:00
zvol.c Allow c99 code to compile 2017-02-08 09:27:48 -08:00