fixup verion checks

sync

sync

sync with freebsd

sync

sync with freebsd 9.2

sync with freebsd 9.2 release.

sync with freebsd 9.2

sync with freebsd 9.2

handle midnightbsd specific code

tag

Merge libzfs_core and other ZFS bugfixes from FreeBSD and Illumos

fbt_getargdesc: correctly handle types for return problems.

optimize page_lookup and page_unlock

plug a leak

Merge several zfs fixes from Illumos and FreeBSD.  Sto uninitialized warnings.  Merge ZFS I/O deadman thread. This feature panics the system on a hanging zfs.  This can be controlled by vfs.zfs.deadman_enabled and vfs.zfs.deadman_synctime.  Speedup metaslab_sync.

correct locking errors in dtrace_debug.c. See FreeBSD svn 248073

zfs_vget, zfs_fhtovp: properly handle the z_shares_dir object.

add the feature flags code for lz4 compression (we already had lz4 backported to zpool 28

The current ZFS code expects ddt_zap_count to alays succeed by asserting the underlying zap_count to return no errors.

remove KM_ZERO

spa_generate_rootconf: add support for old vdev labels

add zfs_bmap to aid vnode_pager_haspage

zfs_geetpages: optimize for large block sizes.

re-add this

zfs: overhaul zfs-vfs glue for vnode life cyle management.

zfs roopool: add support for multi-vdev configs.

not needed.

use SA_ZPL_CRTIME for creation

set VV_NOSYNC flag if a node is unlinked

do not call spa_history_log_version

bailout early if directory is unlinked

import a new version of zfs from opensolaris & freebsd

set MNTK_EXTENDED_SHARED flag

use public api

use vfs_busy in travesere before calling VFS_ROOT

fallback to zpool.cache

zfs close should be called with count 1

taste geom providers for root pool config

zvol: set mediasize in geom provider right upon its creation

zfs: correctly calculate dn_bonuslen for saving SAs to disk

zfs: fix sa_modify_attrs handling of variable-sized
attributes

sanity checks tweaked per freebsd svn rev 240957

use provided name when allocating ksid domain. for greater zfs compatibility when other operating systems read disk

Bump dtrace_helper_actions_max from 32 to 128

Dave Pacheco from Joyent (and Dtrace.org) bumped the cap to 1024 but,
according to his blog, 128 is the recommended minimum.

For now bump it safely to 128 although we may have to bump it further
if there is demand in the future.

Illumos 13879:4eac7a87eff2
3329 spa_sync() spends 10-20% of its time in spa_free_sync_cb()
3330 space_seg_t should have its own kmem_cache
3331 deferred frees should happen after sync_pass 1
3335 make SYNC_PASS_* constants tunable

New loader-only tunables:
vfs.zfs.sync_pass_deferred_free
vfs.zfs.sync_pass_dont_compress
vfs.zfs.sync_pass_rewrite

References:
https://www.illumos.org/issues/3329
https://www.illumos.org/issues/3330
https://www.illumos.org/issues/3331
https://www.illumos.org/issues/3335

Import the zio nop-write improvement from Illumos. To reduce I/O,
nop-write omits overwriting data if the checksum (cryptographically
secure) of new data matches the checksum of existing data.
It also saves space if snapshots are in use.

It currently works only on datasets with enabled compression, disabled
deduplication and sha256 checksums.

IllumOS 13887:196932ec9e6a and 13888:7204b3392a58
3236 zio nop-write

References:
https://www.illumos.org/issues/3236

Add loader(8) tunable to enable/disable nopwrite functionality:
vfs.zfs.nopwrite_enabled

Introduce a new dataset aclmode setting "restricted" to protect ACL's
being destroyed or corrupted by a drive-by chmod.

illumos-gate 13889:a67716f16746
3254 add support in zfs for aclmode=restricted

Update manpage dates in zfs.8 and zpool.8

introduce lz4 compression into our ZFS implementation.

reset props for svn keywords

tag

update zfs support

sync with newer opensolaris code

sync some off the zfs code

This commit was generated by cvs2svn to compensate for changes in r5075,
which included commits to RCS files with non-trunk default branches.

branding

add sparc64 specific code.

add intel and sparc specific fasttrap_isa header

s/lbolt/LBOLT

Bring in several improvements from OpenSolaris for dtrace, zfs, etc.

Add kernel code for kernel lock manager for nfs, vfs and vm improvements and general compatibility with the recent network stack changes.

Bring in several improvements and bugfixes from FreeBSD 7.1

Tag $MidnightBSD$

add dtrace related files for devices.

Revert zfs related file changes from several days ago. This was a bad idea.

ZFS is a file-system originally developed by Sun Microsystems.

The ZFS Intent Log ("ZIL") is a mechanism that gathers together in memory
transactions of writes, and is flushed onto disk when synchronous
semantics is necessary.  In the event of crash or power failure, the
log is examined and the uncommitted transaction would be replayed to
maintain the synchronous semantics.

When replaying setattr transaction, the replay code would set the
attributes with certain insecure defaults, when the logged
transaction did not touch these attributes.

A system crash or power fail would leave some file with mode set
to 07777.  This could leak sensitive information or cause privilege
escalation.

Based on FreeBSD security advisory SA-10:03.zfs (freebsd 7.x)

add fm

Add compatibility files from opensolaris (cddl)