src/lib/libdevdctl, branch release/11.2.0

MFC r329273, r329275, r329277, r329284, r329344

2018-03-10T03:34:27+00:00

r329273:
geli: append "/eli" to the underlying provider's physical path

If the underlying provider's physical path is null, then the geli device's
physical path will be, too. Otherwise, it will append "/eli".  This will make
geli work better with zfsd(8).

PR:		224962
Differential Revision:	https://reviews.freebsd.org/D13979

r329275:
gpart: append partition name to the underlying provider's physical path

If the underlying provider's physical path is null, then the gpart device's
physical path will be, too. Otherwise, it will append the partition name,
such as "/p1" or "/s1/a". This will make gpart work better with zfsd(8).

PR:		224965
Differential Revision:	https://reviews.freebsd.org/D14010

r329277:
Add mtree entry for 329275

X-MFC-With:	329275
Sponsored by:	Spectra Logic Corp

r329284:
zfsd: Allow zfsd to work on any type of GEOM provider

cddl/usr.sbin/zfsd/zfsd_event.cc
	Remove the check for da and ada devices.  This way zfsd can work on md,
	geli, glabel, gstripe, etc devices.  geli in particular is useful
	combined with ZFS.  gnop is also useful for simulating drive pulls in
	the ZFSD test suite.

	Also, eliminate the DevfsEvent class entirely.  Move its
	responsibilities into GeomEvent.  We can get everything we need to know
	just from listening to GEOM events.

lib/libdevdctl/event.cc
	Fix GeomEvent::DevName for CREATE events.  Oddly, the relevant field is
	named "cdev" for CREATE events but "devname" for disk events.

Relnotes:	Yes (probably worth mentioning the geli part)
Sponsored by:	Spectra Logic Corp

r329344:
Optimize zfsd for the happy case

If there are no damaged pools, then ignore all GEOM events.  We only use
them to fix damaged pools.  However, still pay attention to ZFS events.

X-MFC-With:	329284
Sponsored by:	Spectra Logic Corp

MFC r325011, r325016

2017-11-28T16:52:38+00:00

r325011:
zfsd should be able to online an L2ARC that disappears and returns

Previously, this didn't work because L2ARC devices' labels don't contain
pool GUIDs.  Modify zfsd so that the pool GUID won't be required:

lib/libdevdctl/guid.h
	Change INVALID_GUID from a uint64_t constant to a function that
	returns an invalid Guid object.  Remove the void constructor.
	Nothing uses it, and it violates RAII.

cddl/usr.sbin/zfsd/case_file.h
cddl/usr.sbin/zfsd/case_file.cc
	Allow CaseFile::Find to match a CaseFile based on Vdev GUID alone.
	In CaseFile::ReEvaluate, attempt to online devices even if the newly
	arrived device has no pool GUID.

cddl/usr.sbin/zfsd/vdev_iterator.cc
	Iterate through a pool's cache devices as well as its regular
	devices.

Reported by:	avg
Reviewed by:	avg
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D12791

r325016:
Partially revert r325011: restore Guid's default constructor

Reported by:	ohartmann
X-MFC-With:	325011
Sponsored by:	Spectra Logic Corp

MFC r312452-r312512:

2017-02-10T07:32:40+00:00

r312452-r312512:

- Use SRCTOP-relative paths to other directories instead of .CURDIR-relative ones

  This simplifies pathing in make/displayed output

- Use .CURDIR:H instead of .CURDIR to simplify pathing in output, etc

MFC r307364:

2016-10-22T20:50:49+00:00

directly create the socket with SOCK_NONBLOCK instead of calling fcntl(2)

DIRDEPS_BUILD: Connect new directories and update dependencies.

2016-06-03T19:25:30+00:00

Sponsored by:	EMC / Isilon Storage Division

Coverity fixes for r300906

2016-05-31T23:26:45+00:00

lib/libdevdctl/consumer.cc
	In Consumer::DisconnectFromDevd, don't close the socket if it's
	already closed.

cddl/usr.sbin/zfsd/case_file.cc
lib/libdevdctl/consumer.h
	Delete dead code leftover from before devd(8) gained SOCK_SEQPACKET
	support

Reported by:	Coverity
CID:		1356155, 1356169
Sponsored by:	Spectra Logic Corp

libdevdctl: minor spelling fixes.

2016-05-30T19:25:00+00:00

Avoid literal-suffix error due to missing space.

2016-05-28T22:27:54+00:00

zfsd(8), the ZFS fault management daemon

2016-05-28T17:43:40+00:00

Add zfsd, which deals with hard drive faults in ZFS pools. It manages
hotspares and replements in drive slots that publish physical paths.

cddl/usr.sbin/zfsd
	Add zfsd(8) and its unit tests

cddl/usr.sbin/Makefile
	Add zfsd to the build

lib/libdevdctl
	A C++ library that helps devd clients process events

lib/Makefile
share/mk/bsd.libnames.mk
share/mk/src.libnames.mk
	Add libdevdctl to the build. It's a private library, unusable by
	out-of-tree software.

etc/defaults/rc.conf
	By default, set zfsd_enable to NO

etc/mtree/BSD.include.dist
	Add a directory for libdevdctl's include files

etc/mtree/BSD.tests.dist
	Add a directory for zfsd's unit tests

etc/mtree/BSD.var.dist
	Add /var/db/zfsd/cases, where zfsd stores case files while it's shut
	down.

etc/rc.d/Makefile
etc/rc.d/zfsd
	Add zfsd's rc script

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev.c
	Fix the resource.fs.zfs.statechange message. It had a number of
	problems:

	It was only being emitted on a transition to the HEALTHY state.
	That made it impossible for zfsd to take actions based on drives
	getting sicker.

	It compared the new state to vdev_prevstate, which is the state that
	the vdev had the last time it was opened.  That doesn't make sense,
	because a vdev can change state multiple times without being
	reopened.

	vdev_set_state contains logic that will change the device's new
	state based on various conditions.  However, the statechange event
	was being posted _before_ that logic took effect.  Now it's being
	posted after.

Submitted by:	gibbs, asomers, mav, allanjude
Reviewed by:	mav, delphij
Relnotes:	yes
Sponsored by:	Spectra Logic Corp, iX Systems
Differential Revision:	https://reviews.freebsd.org/D6564