man filesystems: fix xrefs after move to section 4

Reviewed by: des, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1077

mount_mfs.8: remove self-reference

Change .Xr instances to .Nm, which quiets several mandoc warnings.

Reviewed by: mhorne
MFC after: 3 days
Pull Request: https://github.com/freebsd/freebsd-src/pull

mount_mfs.8: remove self-reference

Change .Xr instances to .Nm, which quiets several mandoc warnings.

Reviewed by: mhorne
MFC after: 3 days
Pull Request: https://github.com/freebsd/freebsd-src/pull/1135

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Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

mdmfs(8): Fix an issue reported by mandoc

- whitespace at end of input line

MFC after: 1 week

mdmfs(8): add -k skel option to populate fs from a skeleton

mdmfs(8) lacks the ability to populate throwaway memory filesystems from an
existing directory.

This features permits an interesting setu

mdmfs(8): add -k skel option to populate fs from a skeleton

mdmfs(8) lacks the ability to populate throwaway memory filesystems from an
existing directory.

This features permits an interesting setup where /var for instance lives on
a device where wear-leveling is something you want to avoid as much as
possible and nonetheless you don't want to lose your logs, ports metadata,
etc. Here are the steps:

1. Copy /var to /var.bak;
2. Mount an mfs into /var using -k /var.bak at startup;
3. Synchronize /var to /var.bak weekly and on shutdown.

Note that this more or less mimics OpenBSD's mount_mfs(8) -P flag.

PR: 146254
Submitted by: jlh (many moons ago)
MFC after: 1 week

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Merge ^/head r323559 through r325504.

MFhead@r324148

Enhance mdmfs(8) to work with tmpfs(5).

Existing scripts and associated config such as rc.initdiskless, rc.d/var,
and others, use mdmfs to create memory filesystems. That program accepts a
size argu

Enhance mdmfs(8) to work with tmpfs(5).

Existing scripts and associated config such as rc.initdiskless, rc.d/var,
and others, use mdmfs to create memory filesystems. That program accepts a
size argument which allows SI suffixes and treats an unsuffixed number as a
count of 512 byte sectors. That makes it difficult to convert existing
scripts to use tmpfs instead of mdmfs, because tmpfs treats unsuffixed
numbers as a count of bytes. The script logic to deal with existing user
config that might include suffixed and unsuffixed numbers is... unpleasant.

Also, there is no g'tee that tmpfs will be available. It is sometimes
configured out of small-resource embedded systems to save memory and flash
storage space.

These changes enhance mdmfs(8) so that it accepts two new values for the
'md-device' arg: 'tmpfs' and 'auto'. With tmpfs, the program always uses
tmpfs(5) (and fails if it's not available). With 'auto' the program prefers
tmpfs, but falls back to using md(4) if tmpfs isn't available. It also
handles the -s <size> argument so that the mdconfig interpetation of
unsuffixed numbers applies when tmpfs is used as well, so that existing user
config keeps working after a switch to tmpfs.

A new rc setting, mfs_type, is added to etc/defaults/rc.conf to let users
force the use of tmpfs or md; the default value is "auto".

Differential Revision: https://reviews.freebsd.org/D12301

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Merge ^/head r305687 through r305890.

Add missing history sections to a number of storage related man pages

gmultipath.8: Add HISTORY
Adjust sentences with bad phrases picked up by igor

ggatec.8: Add HISTORY

ggated.8: Add HISTORY

gg

Add missing history sections to a number of storage related man pages

gmultipath.8: Add HISTORY
Adjust sentences with bad phrases picked up by igor

ggatec.8: Add HISTORY

ggated.8: Add HISTORY

ggatel.8: Add HISTORY
Seperate out sentence as advised by igor.

hastctl.8: Add HISTORY

hastd.8: Add HISTORY
Fix sentence highlighted by igor.

iscontrol.8: Add HISTORY

mdmfs.8: Add HISTORY
Address issues raised by igor

mount_nfs.8: Add HISTORY
Not sure where mount_nfs first showed up, but the verison used
in the BSD's originates from 4.4BSD according to CSRG archive.

Though commercial offerings from Sun and others covers older
systems, eg https://groups.google.com/forum/#!topic/net.unix-wizards/lMe7aQikqJI

nandfs.8: Add HISTORY
Adjust sentence in description to address bad phrase highlighted
by igor.

nvmecontrol.8: Add HISTORY

PR: 212491
PR: 212498
PR: 212499
PR: 212500
PR: 212501
PR: 212502
PR: 212505
PR: 212508
PR: 212540
PR: 212543
PR: 212546
Submitted by: Sevan Janiyan <venture37@geeklan.co.uk>

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MFH

Sponsored by: The FreeBSD Foundation

- Implement -T option to allow to specify a fs type for a vnode-backed memory disk
- Rephrase -t option description (manpage)
- Split long sentences (manpage)

Differential Review: https://reviews.fr

- Implement -T option to allow to specify a fs type for a vnode-backed memory disk
- Rephrase -t option description (manpage)
- Split long sentences (manpage)

Differential Review: https://reviews.freebsd.org/D4394

Reviewed by: mav, wblock (manpage)
Approved by: mav

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MFH

Sponsored by: The FreeBSD Foundation

Update meaning of -n argument.

Submitted by: Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after: 1 week

MFC

IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib

Merge head r232686 through r233825 into projects/pf/head.

Remove trailing whitespace per mdoc lint warning

Disussed with: gavin
No objection from: doc
Approved by: joel
MFC after: 3 days

IFC @ r225592

sys/dev/bvm/bvm_console.c - move up to the new alt-break order.

IFC @225440.

dd -t switch for mdmfs to enable TRIM on the configured filesystem.
While there, fix minor style issues.

Submitted by: Alex Kozlov <spam rm-rf kiev ua>
MFC after: 1 week
Approved by: re (bz)

Grammar nits.

Add examples for configuring and mounting geom_uzip(4) based disks'
image and sliced/partitioned memory disks.
MFC after: 1 week

Correct -c and -d description.

Other requests made in the PR were already solved in the past.

PR: bin/66763
MFC after: 1 week

Remove the -C option as it does more harm than good. To be fully
compatible, it would have to (at least):

- support the "compat-compat" -T option,
- *not* support the -l, -O, and -v options,
- defa

Remove the -C option as it does more harm than good. To be fully
compatible, it would have to (at least):

- support the "compat-compat" -T option,
- *not* support the -l, -O, and -v options,
- default to soft updates being disabled.

Worse, the compatibility mode makes it impossible to mount_mfs(8)
a file system from fstab(5) with soft updates disabled (-S). [1]

Now, the only difference when called as "mount_mfs" or "mfs" (as
opposed to "mdmfs") is that the file mode of the mount point is
set by default to 01777. All options available to mdmfs(8) are
also available to mount_mfs(8); the -C option is still recognized
but ignored for backward compatibility.

PR: bin/98860 [1]
MFC after: 2 weeks

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