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markj a049a758b2 Add support for compressed kernel dumps. 
When using a kernel built with the GZIO config option, dumpon -z can be
used to configure gzip compression using the in-kernel copy of zlib.
This is useful on systems with large amounts of RAM, which require a
correspondingly large dump device. Recovery of compressed dumps is also
faster since fewer bytes need to be copied from the dump device.

Because we have no way of knowing the final size of a compressed dump
until it is written, the kernel will always attempt to dump when
compression is configured, regardless of the dump device size. If the
dump is aborted because we run out of space, an error is reported on
the console.

savecore(8) is modified to handle compressed dumps and save them to
vmcore.<index>.gz, as it does when given the -z option.

A new rc.conf variable, dumpon_flags, is added. Its value is added to
the boot-time dumpon(8) invocation that occurs when a dump device is
configured in rc.conf.

Reviewed by:	cem (earlier version)
Discussed with:	def, rgrimes
Relnotes:	yes
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D11723
2017-10-25 00:51:00 +00:00
..
autofs Enable automounting of exFAT media. 2017-05-04 19:16:36 +00:00
bluetooth
casper
cron.d Conditionally handle the crontab entry for atrun(8) 2017-05-18 06:33:55 +00:00
defaults Add support for compressed kernel dumps. 2017-10-25 00:51:00 +00:00
devd Regenerate usb.conf 2017-10-13 20:29:35 +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.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 pf: Basic automated test using VIMAGE 2017-10-06 20:43:14 +00:00
newsyslog.conf.d Handle the logfiles in newsyslog and syslogd conditionally, based on 2017-05-13 03:10:50 +00:00
ntp Replace the leap-seconds file in r320242 from USNO - 2017-06-23 01:05:49 +00:00
pam.d Remove rcmds. 2017-10-06 08:43:14 +00:00
periodic Anticongestion refinements for ntpd rc script. This reverts r324681 2017-10-19 03:17:50 +00:00
pkg Give hint on how to disable the default repository. 2014-03-30 15:24:17 +00:00
rc.d Add support for compressed kernel dumps. 2017-10-25 00:51:00 +00:00
root Fix typo introduced in r320672 - check for existence of the right file. 2017-07-05 15:42:33 +00:00
sendmail Move /etc/ to SRCTOP 2017-03-12 18:58:55 +00:00
syslog.d Handle the logfiles in newsyslog and syslogd conditionally, based on 2017-05-13 03:10:50 +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 Conditionally handle the crontab entry for atrun(8) 2017-05-18 06:33:55 +00:00
csh.cshrc
csh.login
csh.logout
ddb.conf
devd.conf Update devd.conf for ports change 421360 2017-02-27 15:32:56 +00:00
devfs.conf
dhclient.conf
disktab
fbtab
freebsd-update.conf
ftpusers
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 Remove rcmds. 2017-10-06 08:43:14 +00:00
libalias.conf
libmap.conf
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 Remove a atrun check that is nullified by r318443. 2017-10-21 21:58:24 +00:00
Makefile.depend META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
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 NATM configuration bits and assorted NATM and ATM remnants. 2017-04-25 21:59:34 +00:00
network.subr Remove NATM configuration bits and assorted NATM and ATM remnants. 2017-04-25 21:59:34 +00:00
networks
newsyslog.conf Handle the logfiles in newsyslog and syslogd conditionally, based on 2017-05-13 03:10:50 +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 Update ntp.conf to use the ntpd pool feature. 2017-01-02 15:19:22 +00:00
opieaccess
pccard_ether Do not try to recreate wlan(4) interface if it already exists. 2016-12-04 15:58:34 +00:00
pf.os
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 Remove spurious $flags; it's a paste-o from copying the line from rc.subr. 2017-09-29 22:21:42 +00:00
rc.resume
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 rc.subr: Remove test that is always true. 2017-10-15 11:28:41 +00:00
rc.suspend
regdomain.xml
remote
rpc
services Add an example inetd(8) entry for the Prometheus sysctl exporter. 2016-12-21 08:32:20 +00:00
shells
snmpd.config Move the mibII module up so uncommenting the bridge module works 2017-01-07 09:03:40 +00:00
sysctl.conf
syslog.conf Handle the logfiles in newsyslog and syslogd conditionally, based on 2017-05-13 03:10:50 +00:00
termcap.small