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kevans eaf5615c2e 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
2019-11-01 03:10:53 +00:00
..
adjkerntz various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
bectl bectl(8): destroy: use BE_DESTROY_AUTOORIGIN if -o is not specified 2019-10-16 14:55:56 +00:00
bsdlabel Remove deprecated GEOM classes 2019-08-13 20:06:55 +00:00
camcontrol Remove Tagged Command Queuing feature reporting. 2019-09-12 17:42:37 +00:00
ccdconfig ccdconfig: Move VCS tags to be more consistent with our style. 2017-12-30 00:26:42 +00:00
clri In preparation for adding inode check-hashes, clean up and 2018-11-13 21:40:56 +00:00
comcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
conscontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ddb ddb: use 'textdump dump' instead of 'call doadump' 2019-10-18 12:32:01 +00:00
decryptcore EKCD: Add Chacha20 encryption mode 2019-05-23 20:12:24 +00:00
devd Stop linking to libl by specifying we do not need yywrap 2019-09-10 08:19:46 +00:00
devfs Move all devfs related files to sbin/devfs/ 2018-08-22 15:55:23 +00:00
devmatch Regularize the Netflix copyright 2019-02-04 21:28:25 +00:00
dhclient Free DHCP options with length zero. 2019-06-26 20:19:48 +00:00
dmesg General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
dump Clarify that the -r and -R options can be used only to create level 0 dumps. 2019-06-14 06:10:15 +00:00
dumpfs The goal of this change is to prevent accidental foot shooting by 2018-02-08 23:06:58 +00:00
dumpon EKCD: Add Chacha20 encryption mode 2019-05-23 20:12:24 +00:00
etherswitchcfg Add the 'drop tagged' flag support for ethernet switch ports. 2019-06-28 22:12:43 +00:00
fdisk Remove deprecated GEOM classes 2019-08-13 20:06:55 +00:00
ffsinfo In preparation for adding inode check-hashes, clean up and 2018-11-13 21:40:56 +00:00
fsck explain ``fsck -f'' more in detail 2019-03-08 10:03:16 +00:00
fsck_ffs Replace an uninitialized variable with the correct element from the 2019-10-22 22:23:59 +00:00
fsck_msdosfs Avoid mixing cluster numbers and sector numbers. Makes code more readable. 2019-09-15 19:41:54 +00:00
fsdb After a crash, a file that extends into indirect blocks may end up 2019-02-25 21:58:19 +00:00
fsirand Continuing efforts to provide hardening of FFS. This change adds a 2018-12-11 22:14:37 +00:00
gbde gbde(8) - simplify randomisation with arc4random_buf 2019-02-11 00:11:02 +00:00
geom Add the "-t" option to geom(8) utility, to display geoms hierarchy. 2018-09-14 15:29:45 +00:00
ggate Fix typo not -> nor and add 'the' because we are talking about specific flags 2019-09-06 15:01:47 +00:00
growfs Normally when an attempt is made to mount a UFS/FFS filesystem whose 2018-12-06 00:09:39 +00:00
gvinum gvinum: revert WARNS change in Makefile 2018-06-17 01:39:22 +00:00
hastctl various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
hastd Drop "All rights reserved" from my copyright statements. 2019-03-06 22:11:45 +00:00
ifconfig ifconfig: add report of the string from SIOCGIFDOWNREASON. 2019-09-17 18:51:10 +00:00
init add ability to set watchdog timeout for a shutdown 2019-10-03 11:23:10 +00:00
ipf Create a link to the ipmon.conf.5 man page as documented in ipmon.5. 2019-06-27 12:37:44 +00:00
ipfw Explicitly initialize the memory buffer to store O_ICMP6TYPE opcode. 2019-10-15 09:50:02 +00:00
iscontrol Fix formatting. 2019-08-08 20:56:52 +00:00
kldconfig various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kldload various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kldstat Allow three digits of module id without breaking table alignment. 2018-07-02 09:14:00 +00:00
kldunload various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ldconfig Make ldconfig(8) atomic, by removing an unneccessary call to unlink(2) 2018-08-09 11:46:12 +00:00
md5 Close filedescriptors when done with them. 2019-04-19 06:49:46 +00:00
mdconfig Use VOP_ADVISE() with POSIX_FADV_DONTNEED instead of IO_DIRECT to 2018-12-21 08:15:31 +00:00
mdmfs mdmfs(8): add -k skel option to populate fs from a skeleton 2019-11-01 03:10:53 +00:00
mknod General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mksnap_ffs various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mount Add two options to allow mount to avoid covering up existing mount points. 2019-09-23 04:28:07 +00:00
mount_cd9660 Advise reader to also see mdconfig(8) in mount_cd9660(8). 2018-08-11 08:34:24 +00:00
mount_fusefs mount_fusefs: fix a segfault on memory allocation failure 2019-09-07 21:49:01 +00:00
mount_msdosfs mount_msdosfs: do not fail mounts requiring locale name conversion table 2018-10-27 16:41:34 +00:00
mount_nfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_nullfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_udf General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_unionfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
natd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
newfs Correct the location of the first backup superblock in fsck_ffs.8. 2019-08-07 16:56:00 +00:00
newfs_msdos When creating a new FAT32 filesystem, use "unknown" (0xFFFFFFFF) for 2019-08-22 06:14:06 +00:00
nfsiod pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
nos-tun pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
nvmecontrol Size is unsigned, so remove the test entirely. 2019-09-25 07:51:30 +00:00
pfctl pkgbase: pfctl: tests: Put tests files in the FreeBSD-tests package 2019-09-05 14:19:06 +00:00
pfilctl Hopefully fix compilation by other compilers. 2019-02-01 00:34:18 +00:00
pflogd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
ping ping: Verify whether a datagram timestamp was actually received. 2019-09-11 18:54:45 +00:00
ping6 Fix option names in the Examples section of the manual page 2019-10-20 20:29:17 +00:00
quotacheck Normally when an attempt is made to mount a UFS/FFS filesystem whose 2018-12-06 00:09:39 +00:00
rcorder pkgbase: Move rc scripts and related files to their own packages 2019-09-05 14:08:45 +00:00
reboot Update the manpage text to show the output generated by the first-stage 2019-04-30 17:42:05 +00:00
recoverdisk recoverdisk(1): fclose() file supplied via '-r readlist' parameter when 2019-02-07 14:40:28 +00:00
resolvconf
restore Re-enable reading byte swapped NFS_MAGIC dumps. 2018-08-11 16:12:23 +00:00
route route(8): clarify -prefixlen description 2019-01-10 00:10:12 +00:00
routed When bind fails, make sure we closed the socket we tried to bind the 2017-12-28 05:34:24 +00:00
rtsol Capsicumize rtsol(8) and rtsold(8). 2019-01-05 16:05:39 +00:00
savecore cap_fileargs: chase r346315, update fileargs_init in consumers 2019-04-17 16:18:14 +00:00
sconfig DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
setkey pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
shutdown shutdown: Fix r327476 by adding init 2018-01-02 09:02:42 +00:00
spppcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
sunlabel Remove deprecated GEOM classes 2019-08-13 20:06:55 +00:00
swapon swap_pager.c reserves 2 blocks for a bsd label. Change that 2 to the 2019-08-15 02:30:44 +00:00
sysctl evdev: export event device properties through sysctl interface 2019-02-24 18:47:04 +00:00
tests
tunefs The size of the UFS soft-updates journal must be a multiple of the 2019-03-02 21:22:56 +00:00
umount umount: remove sync(2) call when used with -f 2018-09-13 13:57:42 +00:00
veriexec Add verifying manifest loader for mac_veriexec 2019-02-26 06:17:23 +00:00
zfsbootcfg DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
Makefile Remove NAND and NANDFS support 2019-06-25 04:50:09 +00:00
Makefile.amd64 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.arm
Makefile.i386 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.inc
Makefile.mips
Makefile.powerpc64 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.sparc64