server.
This patch uses the sysctl vfs.nfsd.server_min_nfsvers to determine
if/what versions of NFS service should be registered with rpcbind.
For NFSv4 only, it does not register at all, since NFSv4 always uses 2049
and does not require rpcbind.
For NFSv3 minimum, it registers NFSv3 but not NFSv2.
Tested by: jmader2@gmu.edu
Submitted by: jmader2@gmu.edu (earlier version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D8696
The TCP server implementation in dbgport does not track clients, so it
may try to write to a disconected socket resulting in SIGPIPE.
Avoid that by setting SO_NOSIGPIPE socket option.
Because dbgport emulates an I/O port to guest, the communication is done
byte by byte. Reduce latency of the TCP/IP transfers by using
TCP_NODELAY option. In my tests that change improves performance of
kgdb commands with lots of output (e.g. info threads) by two orders of
magnitude.
A general note. Since we have a uart emulation in bhyve, that can be
used for the console and gdb access to guests. So, bvmconsole and bvmdebug
could be de-orbited now. But there are many existing deployments that
still dependend on those.
Discussed with: julian, jhb
MFC after: 2 weeks
Sponsored by: Panzura
writev() can do a short write. Retrying it results in a very convoluted
and complex code, so we iterate over iovec and do regular stream_write()
instead.
Approved by: trasz
Sponsored by: iXsystems, Inc.
r285050 fixed a bug in pw that could lead to /etc/passwd or /etc/group
corruption on power loss. However, it fixed it by opening those files with
O_SYNC, which is very slow, especially on ZFS. This change replaces O_SYNC
with appropriately placed fsync()s instead, which is much faster. Using a
ZFS tmpdir, the time to run pw's kyua tests drops from 245s to 35s.
Reviewed by: allanjude, bapt, vangyzen, garga
Tested on pfSense by: garga
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D8319
Some tools produce objects with a combined strtab and shstrtab.
These objects are not supported by crunchide since it rewrites the
symtab and strtab to "hide" symbols. This invalidates section header
offsets into a combined strtab/shstrtab.
In the future we could support these objects (by ensuring that we retain
unmodified section name strings in the output .strtab, and then rewriting
each section header's sh_name).
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
VSS stands for "Volume Shadow Copy Service". Unlike virtual machine
snapshot, it only takes snapshot for the virtual disks, so both
filesystem and applications have to aware of it, and cooperate the
whole VSS process.
This driver exposes two device files to the userland:
/dev/hv_fsvss_dev
Normally userland programs should _not_ mess with this device file.
It is currently used by the hv_vss_daemon(8), which freezes and
thaws the filesystem. NOTE: currently only UFS is supported, if
the system mounts _any_ other filesystems, the hv_vss_daemon(8)
will veto the VSS process.
If hv_vss_daemon(8) was disabled, then this device file must be
opened, and proper ioctls must be issued to keep the VSS working.
/dev/hv_appvss_dev
Userland application can opened this device file to receive the
VSS freeze notification, hold the VSS for a while (mainly to flush
application data to filesystem), release the VSS process, and
receive the VSS thaw notification i.e. applications can run again.
The VSS will still work, even if this device file is not opened.
However, only filesystem consistency is promised, if this device
file is not opened or is not operated properly.
hv_vss_daemon(8) is started by devd(8) by default. It can be disabled
by editting /etc/devd/hyperv.conf.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: kib, mckusick
MFC after: 3 weeks
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8224
Developers writing code for accessing /dev/smb may use this base utility
as an example. Now that SMB_READB, SMB_READW, SMB_PCALL behave as
documented, wwe can use them in a more convenient way than before.
MFC after: 4 weeks
X-MFC after: r308527
Used extensively on my network over the past month.
Reviewed by: pfg, brooks
Suggested by: pfg
Obtained from: ftp://ftp.am-utils.org/pub/am-utils/
MFC after: 6 weeks
Relnotes: yes
Differential Revision: D8405
The code assumed that 'timeout' and 'timeout_sec' are in sync
which they weren't if no '-t' option was passed to watchdogd.
Reported by: Olivier Smedts <olivier@gid0.org>,
Alex Deiter <alex.deiter@gmail.com>
Tested by: Olivier Smedts <olivier@gid0.org>,
Alex Deiter <alex.deiter@gmail.com>
MFC after: 5 days
X-MFC with: r308040
print. Also add a new flag -s that add blocks size to statistics.
PR: 198347, 212726
Submitted by: Ben RUBSON <ben.rubson@gmail.com>
Tested by: pi
MFC After: 2 weeks.
from struct stat. We don't necessarily have permissions to see the
generation number and the host OS may not have st_gen in struct stat
anyway. Since the kernel assigns random numbers, there's nothing
meaningful about the generation that requires us to preserve it when
the file system image is created. With this change, all generation
numbers come from random() and that makes it easier to add support
for reproducible builds at some time in the future (i.e. by adding
an argument to makefs that changes the behaviour of random() so that
it always returns 0 or some predictable sequence).
Differential Revision: https://reviews.freebsd.org/D8418
(it takes a long time on systems with many interfaces)
without reason and without checking its return value.
Reviewed by: cem
Obtained from: Maryse Levavasseur <maryse.levavasseur@stormshield.eu>
MFC after: 1 month
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D6979
All the '.conf' files not beginning with a '.' contained int he directory
following the keyword will be included.
This keyword can only be used in the first level configuration files.
Modify the default syslogd.conf to 'include' /etc/syslog.d and
/usr/local/etc/syslog.d
It simplify a lot handling of syslog from automation tools.
Reviewed by: markj, kib (via irc)
Approved by: markj
MFC after: 2 weeks
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D8402
For automation tools it is way easier to maintain files in directories rather
than modifying /etc/crontab.
The files in those directories are in the same format as /etc/crontab
Reviewed by: adrian
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D8400
