This is not needed anymore, it is forced in GEOM now.
Actually, it can even cause some problems, because GEOM requires sectorsize
to be more than 0 on first access, not on provider creation, so we ca

This is not needed anymore, it is forced in GEOM now.
Actually, it can even cause some problems, because GEOM requires sectorsize
to be more than 0 on first access, not on provider creation, so we can skip
valid providers by doing this check here.

Reported by: Divacky Roman <xdivac02@stud.fit.vutbr.cz>
Sven Willenberger <sven@dmv.com>

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Allow to configure debug level from /boot/loader.conf.

Skip providers with not defined sector size.

Reported by: kuriyama

- Introduce option for hardcoding providers' names into metadata.
It allows to fix problems when last provider's sector is shared between few
providers.
- Bump version number for CONCAT and STRIP

- Introduce option for hardcoding providers' names into metadata.
It allows to fix problems when last provider's sector is shared between few
providers.
- Bump version number for CONCAT and STRIPE and add code for backward
compatibility.
- Do not bump version number of MIRROR, as it wasn't officially introduced yet.
Even if someone started to play with it, there is no big deal, because
wrong MD5 sum of metadata will deny those providers.
- Update manual pages.
- Add version history to g_(stripe|concat).h files.

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Do not use g_wither_geom(9). I doesn't work in the way which is expected
here anymore (after g_wither_washer() was introduced), i.e. geom and consumer
will not be immediately destroyed if possible.

Tag all geom classes in the tree with a version number.

Improve geom(8)'s 'list' command to show geoms and their providers and
consumers. Teach STRIPE, CONCAT and NOP classes about this improvement.

Change naming scheme from /dev/<name>.concat to /dev/concat/<name>.

M_WAITOK is ok here, while I'm using M_WAITOK later in this function.

Fix exclusive-bit leakage.

- Add 'stop' command, which works just like 'destroy' command, but sounds
less dangerous.
- Update manual pages and extend examples.
- Bump versions.

Dump some more informations:
- device state
- list of used providers
- total number of disks
- number of disks online

Prodded by: Alex Deiter <tiamat@komi.mts.ru>

- Teach CONCAT class how to talk with geom(8).
- Remove provider if any disk was lost.
- Dump CONCAT version.

Supported by: Wheel - Open Technologies - http://www.wheel.pl

Fix compilation on 64-bit architectures.

Noticed by: Tinderbox

- Don't check if 'gp' is non-NULL, it always is and GEOM wants to
dump geom configuration when 'pp' and 'cp' are NULL.
- Use tabs instead of spaces.

- Don't take sectorsize from first disk. Calculate it by finding
least common multiple of all disks sector sizes.
This will allow to safely concatenate disks with different sector sizes.
- Mark u

- Don't take sectorsize from first disk. Calculate it by finding
least common multiple of all disks sector sizes.
This will allow to safely concatenate disks with different sector sizes.
- Mark unused function arguments.
- Other minor cleanups.

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Correct year in copyrights.

- Remove d_valid field, we can use d_consumer field to check if disk
is valid.
- Use SYSCTL_DECL() instead of using own, ugly extern.

We don't need d_length field.

Even if we're sure that we can't be orphaned here, we have to define
orphan field - we're enforcing it in GEOM. This will reach KASSERT
in INVARIANTS case.

Add missing space.

Approved by: scottl (m

Even if we're sure that we can't be orphaned here, we have to define
orphan field - we're enforcing it in GEOM. This will reach KASSERT
in INVARIANTS case.

Add missing space.

Approved by: scottl (mentor)

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Introduce CONCAT GEOM class for disk concatenation.
It allows manual and automatic (based on on-disk metadata) concatenation.

Reviewed by: phk, scottl
Approved by: scottl (mentor)

Merge from head at r201628.

# This hasn't been tested, and there are at least three bad commits
# that need to be backed out before the branch will be stable again.

Make geom_concat to passthrough stripe parameters of the first component,
hoping that rest will fit.

MFC @199204

If provider is open for writing when we taste it, skip it for classes that
depend on on-disk metadata. This was we won't attach to providers that are used
by other classes. For example we don't want

If provider is open for writing when we taste it, skip it for classes that
depend on on-disk metadata. This was we won't attach to providers that are used
by other classes. For example we don't want to configure partitions on da0 if
it is part of gmirror, what we really want is partitions on mirror/foo.

During regular work it works like this: if provider is open for writing a class
receives the spoiled event from GEOM and detaches, once provider is closed the
taste event is send again and class can rediscover its metadata if it is still
there. This doesn't work that way when new class arrives, because GEOM gives
all existing providers for it to taste, also those open for writing. Classes
have to decided on their own if they want to deal with such providers (eg.
geom_dev) or not (classes modified by this commit).

Reported by: des, Oliver Lehmann <lehmann@ans-netz.de>
Tested by: des, Oliver Lehmann <lehmann@ans-netz.de>
Discussed with: phk, marcel
Reviewed by: marcel
MFC after: 3 days

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