Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r269118: MFV r269010:

Import Illumos changes to address the following Illumos issues:
4976 zfs should only avoid writing to a failing non-redundant
top-level vdev
4978 ztest fails in get_metaslab_refcount()
4979 extend free space histogram to device and pool
4980 metaslabs should have a fragmentation metric
4981 remove fragmented ops vector from block allocator
4982 space_map object should proactively upgrade when feature
is enabled
4984 device selection should use fragmentation metric

MFC r269100:

Diff reduction against Illumos.

MFC r268621 (smh) + r268625:

Don't report non-native block-size pools under zpool status -x

zpool status -x is used to identify pools that are exhibiting
errors or are otherwise unavailable, therefore non-native
block-size pools shouldn't be reported.

Also update man page to clarify other additional conditions
which won't cause a pool to be displayed under zpool status -x.

Sponsored by: Multiplay

MFC the cddl/contrib/opensolaris/cmd/zpool portion of r267803 (joel):

mdoc: remove superfluous paragraph macros.

MFC r263889 (MFV r263887):

3993 zpool(1M) and zfs(1M) should support -p for "list" and "get"
4700 "zpool get" doesn't support -H or -o options

MFC r263459: MFV 263436-263438:

3947 zpool(1M) references nonexistent zfs-features(5)
4540 zpool(1M) man page doesn't describe "readonly" property
3948 zfs sync=default is not accepted
4611 zfs(1M) still mentions 'send -r' in synopsis
4415 zpool(1M) man page missing "import -m" description
4570 Document dedupditto pool property
4572 Dedup-related documentation additions for zpool and zdb.
1371 Add -D option description to zpool(1M) manpage
4571 Add documentation for -T and interval to "zpool list"

MFC r260138: MFV r242733:

3306 zdb should be able to issue reads in parallel
3321 'zpool reopen' command should be documented in the man page
and help message

illumos/illumos-gate@31d7e8fa33fae995f558673adb22641b5aa8b6e1

FreeBSD porting notes: the kernel part of this changeset depends
on Solaris buf(9S) interfaces and are not really applicable for
our use. vdev_disk.c is patched as-is to reduce diverge from
upstream, but vdev_file.c is left intact.

MFC r261774 by feld:

Add caveat to zpool manpage indicating that we do not automatically activate
hot spares. This should be MFC'd to all STABLE branches.

Upon the availability of zfsd, the zpool manpage on relevant branches should
be updated to remove this caveat and document hot spare's reliance on zfsd.

Requested by: feld

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r248266:
Import minor ZFS changes from vendor

Illumos ZFS issues:
3604 zdb should print bpobjs more verbosely (fix zdb hang)
3606 zpool status -x shouldn't warn about old on-disk format

MFC after: 3 days

Update manpage dates in zfs.8 and zpool.8

MFC after: 2 weeks

Sort SEE ALSO xrefs by the manual section number and add a missing comma.

Move zpool-features manual page from section 5 to section 7
and fix references

Reported by: pluknet
MFC after: 1 week

Add myself to copyright sections, per CDDL license.

Requested by: mm

Remove trailing whitespace.

Mdoc fixes.

Partial MFV (illumos-gate 13753:2aba784c276b)
2762 zpool command should have better support for feature flags

References:
https://www.illumos.org/issues/2762

MFC after: 2 weeks

Document the -v flag for zpool list.

PR: 168970
Suggested by: Marcelo Araujo <araujo@FreeBSD.org>
MFC after: 3 days

Introduce "feature flags" for ZFS pools (bump SPA version to 5000).
Add first feature "com.delphix:async_destroy" (asynchronous destroy
of ZFS datasets).
Implement features support in ZFS boot code.

Illumos revisions merged:
13700:2889e2596bd6
13701:1949b688d5fb
2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags

References:
https://www.illumos.org/issues/2619
https://www.illumos.org/issues/2747

Obtained from: illumos (issue #2619, #2747)
MFC after: 1 month

Clean up trailing whitespace.

MFC after: 3 days
X-MFC-With: r236776

Fix a typo: s/deafult/default

MFC after: 3 days

Import illumos changeset 13570:3411fd5f1589
1948 zpool list should show more detailed pool information

Display per-vdev information with "zpool list -v".
The added expandsize property has currently no value on FreeBSD.
This changeset allows adding expansion support to individual vdevs
in the future.

References:
https://www.illumos.org/issues/1948

Obtained from: illumos (issue #1948)
MFC after: 2 weeks

Fix typo miror -> mirror

Reported by: Glen Barber <gjb@FreeBSD.org>
MFC after: 3 days

Remove unnecesary "Ns" macros and add missing command example to zpool(8).

Reported by: Nobuyuki Koganemaru <kogane@FreeBSD.org>
MFC after: 3 days

Merge new ZFS features from illumos:

1644 add ZFS "clones" property
https://www.illumos.org/issues/1644

1645 add ZFS "written" and "written@..." properties
https://www.illumos.org/issues/1645

1646 "zfs send" should estimate size of stream
https://www.illumos.org/issues/1646

1647 "zfs destroy" should determine space reclaimed by destroying multiple
snapshots
https://www.illumos.org/issues/1647

1693 persistent 'comment' field for a zpool
https://www.illumos.org/issues/1693

1708 adjust size of zpool history data
https://www.illumos.org/issues/1708

1748 desire support for reguid in zfs
https://www.illumos.org/issues/1748

Obtained from: illumos (changesets 13514, 13524, 13525)
MFC after: 1 month

Add missing -n flag to "zpool import" description.

MFC after: 1 week

Update ZFS manual pages to a mdoc(7) reimplementation.

The zfs(8) and zpool(8) manual pages now match the state of the ZFS module
and have been customized for FreeBSD.

The new texts of the "Deduplication" subsection in zfs(8), the zpool "split"
command, the zfs "dedup" property and several other missing parts have been
added from illumos or OpenSolaris snv_134 (CDDL-licensed).

The mdoc(7) reimplementation of whole manual pages, the descriptions of the
zpool "readonly" property, "zfs diff" command and descriptions of several
other missing command flags and/or options were authored by myself.

MFC after: 1 week

Revert back to revision 227649 because of license uncertainity.

Manual pages from OpenSolaris svn_134 are still properly CDDL licensed
but I have been informed that the parts from s11ex are uncertain even
if they contain a CDDL header.

Fix mismerge in copyright of zpool(8).

MFC after: 4 days

Update zfs(8) and zpool(8) manpages from CDDL-licensed sources [1].
Improved alignment for a maximum width of 80 characters.
Mark unsupported parts as such.

Reported to vendor: Illumos issue #1801

References:
https://www.illumos.org/issues/1801

Obtained from: OpenSolaris CDDL manual pages (snv_134, s11express) [1]
MFC after: 4 days

Update and desolarization of zfs(8) and zpool(8) manual pages:
- synchronized to match new vendor code (Illumos rev. 13513) [1]
- removed references to sun commands (replaced with FreeBSD commands)
- removed ATTRIBUTES sections
- updated SEE ALSO sections
- properly updated copyright information (required by CDDL)
- remove empty lines via MANFILTER

zfs(8) only:
- replaced "Zones" section with new "Jails" section
- removed misleading "ZFS Volumes as Swap or Dump Devices" section
- updated shareiscsi and sharesmb option information (not supported on FreeBSD)
- replace zoned property with jailed property

zpool(8) only:
- updated device names in examples

Obtained from: Illumos (as of rev. 13513:f84d4672fdbd) [1]
MFC after: 1 week

cddl/contrib/opensolaris/cmd/zpool/zpool_main.c:
cddl/contrib/opensolaris/cmd/zpool/zpool.8:
cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c:
Add the "zpool labelclear" command. This command can be
used to wipe the label data from a drive that is not
active in a pool. The optional "-f" argument can be
used to treat an exported or foreign vdev as "inactive"
thus allowing its label information to be cleared.

Finally... Import the latest open-source ZFS version - (SPA) 28.

Few new things available from now on:

- Data deduplication.
- Triple parity RAIDZ (RAIDZ3).
- zfs diff.
- zpool split.
- Snapshot holds.
- zpool import -F. Allows to rewind corrupted pool to earlier
transaction group.
- Possibility to import pool in read-only mode.

MFC after: 1 month

- update zfs and zpool manual pages to match the current state of the source

PR: 144984
Submitted by: mm@
Approved by: pjd@
Obtained from: OpenSolaris
MFC after: 4 days

Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.

This bring huge amount of changes, I'll enumerate only user-visible changes:

- Delegated Administration

Allows regular users to perform ZFS operations, like file system
creation, snapshot creation, etc.

- L2ARC

Level 2 cache for ZFS - allows to use additional disks for cache.
Huge performance improvements mostly for random read of mostly
static content.

- slog

Allow to use additional disks for ZFS Intent Log to speed up
operations like fsync(2).

- vfs.zfs.super_owner

Allows regular users to perform privileged operations on files stored
on ZFS file systems owned by him. Very careful with this one.

- chflags(2)

Not all the flags are supported. This still needs work.

- ZFSBoot

Support to boot off of ZFS pool. Not finished, AFAIK.

Submitted by: dfr

- Snapshot properties

- New failure modes

Before if write requested failed, system paniced. Now one
can select from one of three failure modes:
- panic - panic on write error
- wait - wait for disk to reappear
- continue - serve read requests if possible, block write requests

- Refquota, refreservation properties

Just quota and reservation properties, but don't count space consumed
by children file systems, clones and snapshots.

- Sparse volumes

ZVOLs that don't reserve space in the pool.

- External attributes

Compatible with extattr(2).

- NFSv4-ACLs

Not sure about the status, might not be complete yet.

Submitted by: trasz

- Creation-time properties

- Regression tests for zpool(8) command.

Obtained from: OpenSolaris

Forced commit to note that these files were repo copied.

MFp4: Synchronize with vendor (mostly 'zfs rename -r').

Please welcome ZFS - The last word in file systems.

ZFS file system was ported from OpenSolaris operating system. The code in under
CDDL license.

I'd like to thank all SUN developers that created this great piece of software.

Supported by: Wheel LTD (http://www.wheel.pl/)
Supported by: The FreeBSD Foundation (http://www.freebsdfoundation.org/)
Supported by: Sentex (http://www.sentex.net/)