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Sepherosa Ziehau 168fce73b5 hyperv/vss: Add driver and tools for VSS 
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
2016-11-15 02:36:12 +00:00
..
autofs Fix -media to not mount ufs with "async"; it doesn't make sense when 2016-09-20 04:54:00 +00:00
bluetooth
casper Please welcome casperd daemon. It (and its services) will be responsible for 2013-12-02 08:21:28 +00:00
defaults Many shops still prefer rc.conf(5) based jail configuration(s). In-part 2016-10-12 20:50:17 +00:00
devd hyperv/vss: Add driver and tools for VSS 2016-11-15 02:36:12 +00:00
etc.aarch64 Update the arm64 ttys file to enable the correct uart based on which device 2015-10-01 09:36:18 +00:00
etc.amd64 Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
etc.arm Enable ttyu1, ttyu2, ttyu3 for arm installations. 2015-06-21 19:50:02 +00:00
etc.i386 Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
etc.mips Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
etc.pc98 Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
etc.powerpc Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
etc.riscv Start support for the RISC-V 64-bit architecture developed by UC Berkeley. 2015-12-11 22:55:23 +00:00
etc.sparc64 Enable all callin ttys if the tty is an available console. 2015-10-20 16:10:46 +00:00
gss
mail Add a ${CP} alias for copying files in the build. 2015-01-16 21:39:08 +00:00
mtree hyperv/vss: Add driver and tools for VSS 2016-11-15 02:36:12 +00:00
newsyslog.conf.d META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
ntp Revert r298887 (spelling fix) and remove $FreeBSD$ because text changes 2016-08-25 02:40:14 +00:00
pam.d Create a rcmds package. 2016-01-21 17:33:31 +00:00
periodic Make 502.pfdenied find blacklistd/* filter names dynamically 2016-10-04 23:12:35 +00:00
pkg Give hint on how to disable the default repository. 2014-03-30 15:24:17 +00:00
rc.d Do not install NIS program rc script if WITHOUT_NIS is set 2016-10-22 19:51:32 +00:00
root Step 1 of eliminating the "games" distribution: Move binaries to /usr/bin; 2015-02-12 05:35:00 +00:00
sendmail If world is built with a custom sendmail.cf, use it for the distribution 2015-10-12 21:02:36 +00:00
amd.map
apmd.conf
auto_master Stop appending "noatime" in the autofs -media map, and instead add it 2016-09-20 04:52:01 +00:00
blacklistd.conf Add basic blacklist build support 2016-06-02 19:06:04 +00:00
crontab
csh.cshrc
csh.login
csh.logout
ddb.conf
devd.conf Fix device driver name if devd.conf + move it into appropriate place. 2016-11-06 19:51:01 +00:00
devfs.conf
dhclient.conf
disktab 10 years too late add support for "2.88MB 3.5in Extra High Density" 2012-11-02 00:17:30 +00:00
fbtab
freebsd-update.conf Remove remnants of BIND from /etc, since there is no BIND in base now. 2013-11-05 09:30:06 +00:00
ftpusers Remove most of the ATF tools and the _atf user. 2013-10-12 06:06:53 +00:00
gettytab Add 3wire and std as terminal types/classes. These are similar to 2014-03-09 20:51:14 +00:00
group Fix regression introduced on r293801. 2016-01-27 06:28:56 +00:00
hosts
hosts.allow Allow info to display correctly in for varying tabstop settings 2014-12-24 01:50:44 +00:00
hosts.equiv
hosts.lpd
inetd.conf - Add IPv6 support in quota(1). While rpc.rquotad has supported PF_INET6 2015-07-07 20:15:09 +00:00
libalias.conf
libmap.conf Include /usr/local/etc/libmap.d/ by default. 2013-08-01 05:50:42 +00:00
login.access
login.conf Fix handling of umtxp resource limit in sh(1)/ulimit(1), limits(1), add 2016-03-12 14:54:34 +00:00
mac.conf
Makefile Fix packaging /usr/share/examples/etc. 2016-10-31 21:11:46 +00:00
Makefile.depend META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
man.alias
master.passwd Capitalize "LDAP" in the description field of the _ypldap entry. 2016-05-10 12:47:36 +00:00
minfree
motd Add the less-ambiguous freebsd-version command. 2014-11-02 19:25:31 +00:00
netconfig
netstart Remove reference to mroute6d in /etc/netstart. 2016-06-25 12:54:27 +00:00
network.subr network.subr: avoid unnecessary reinitialization 2016-02-29 20:21:54 +00:00
networks
newsyslog.conf Increase the default rotation threshold of log files from 100kb to 1000kb 2016-08-24 23:02:20 +00:00
nls.alias
nscd.conf
nsmb.conf Remove IPX support. 2014-03-14 02:58:48 +00:00
nsswitch.conf Implement an NSS backend for netgroups and add getnetgrent_r(3). 2016-06-09 01:28:44 +00:00
ntp.conf Add support for automatic leap-second file updates. 2016-01-26 07:06:44 +00:00
opieaccess
pccard_ether Fix dynamic attach/detach of 802.11 devices after r287197: 2015-09-02 12:46:42 +00:00
pf.os Add DragonFly BSD fingerprints to pf.os 2013-12-03 04:32:02 +00:00
phones
portsnap.conf Now that the portsnap buildbox is generating the raw bits for INDEX-12, 2016-08-14 05:18:38 +00:00
printcap
profile
protocols etc: minor spelling fixes. 2016-05-01 16:43:22 +00:00
rc Use checkyesno instead of rolling my own.. 2016-10-23 18:00:09 +00:00
rc.bsdextended
rc.firewall Slight tidy up of comments before MFC 2015-06-29 07:43:09 +00:00
rc.initdiskless etc: minor spelling fixes. 2016-05-01 16:43:22 +00:00
rc.resume wpa_supplicant should be able to reassociate when resuming, so remove a 2013-07-04 07:32:40 +00:00
rc.sendmail
rc.shutdown Since r275359, there is no need to provide a bogus service name. 2015-10-26 15:16:27 +00:00
rc.subr We can't use protect(1) inside a jail(8)! 2016-11-10 07:05:41 +00:00
rc.suspend
regdomain.xml Add a new 900MHz GSM regulatory SKU for the Xagyl Communications XC900M. 2012-12-07 06:34:46 +00:00
remote
rpc
services Replace all whitespaces between port name and number with tabs, 2015-12-24 16:35:28 +00:00
shells
snmpd.config Adds the bsnmp module to export the temperature data from lm75 sensors on 2014-06-01 03:14:03 +00:00
sysctl.conf
syslog.conf syslogd(8): add an 'include' keyword 2016-11-01 01:41:24 +00:00
termcap.small