Kirk McKusick c7996ddf80 Create a new GEOM utility, gunion(8). ... The gunion(8) utility is used to track changes to a read-only disk on a writable disk. Logically, a writable disk is placed over a read-only disk. Write requests are intercepted and stored on the writable disk. Read requests are first checked to see if they have been written on the top (writable disk) and if found are returned. If they have not been written on the top disk, then they are read from the lower disk. The gunion(8) utility can be especially useful if you have a large disk with a corrupted filesystem that you are unsure of how to repair. You can use gunion(8) to place another disk over the corrupted disk and then attempt to repair the filesystem. If the repair fails, you can revert all the changes in the upper disk and be back to the unchanged state of the lower disk thus allowing you to try another approach to repairing it. If the repair is successful you can commit all the writes recorded on the top disk to the lower disk. Another use of the gunion(8) utility is to try out upgrades to your system. Place the upper disk over the disk holding your filesystem that is to be upgraded and then run the upgrade on it. If it works, commit it; if it fails, revert the upgrade. Further details can be found in the gunion(8) manual page. Reviewed by: Chuck Silvers, kib (earlier version) tested by: Peter Holm Differential Revision: https://reviews.freebsd.org/D32697		2022-02-28 16:36:08 -08:00
..
adjkerntz
bectl	bectl(8): don't allow creation of boot environments with spaces	2021-06-03 08:36:11 -08:00
bsdlabel	Remove deprecated GEOM classes	2019-08-13 20:06:55 +00:00
camcontrol	camcontrol fwdownload minor improvements	2022-02-22 14:38:38 -07:00
ccdconfig
clri	In preparation for adding inode check-hashes, clean up and	2018-11-13 21:40:56 +00:00
comcontrol	Remove sio(4).	2019-11-21 01:24:49 +00:00
conscontrol	Remove sio(4).	2019-11-21 01:24:49 +00:00
ddb	ddb: use 'textdump dump' instead of 'call doadump'	2019-10-18 12:32:01 +00:00
decryptcore	decryptcore: do not include sys/sysctl.h	2021-03-07 17:29:03 -06:00
devd	devd: correct wifi regexp	2022-01-09 10:16:31 -07:00
devfs	devfs.rules: Correctly unhide pf in vnet jails	2021-11-03 12:50:13 +01:00
devmatch	devmatch: Allow devmatch_blocklist to be set in kenv too	2021-11-21 08:54:45 -07:00
dhclient	dhclient: support VID 0 (no vlan) decapsulation	2022-02-14 10:06:47 -05:00
dmesg	dmesg: detect wrapped msgbuf on the kernel side and if so, skip first line	2022-02-05 13:35:31 -08:00
dump	ufs: Rework shortlink handling to avoid subobject overflows	2022-01-02 20:55:36 +00:00
dumpfs	dumpfs(8): add option to only print superblock information	2021-07-02 14:18:17 -08:00
dumpon	dumpon: fix build on some architectures	2021-08-11 21:27:24 -05:00
etherswitchcfg	etherswitch: Add a new striptagingress port flag	2021-08-03 12:07:48 +02:00
fdisk	Remove deprecated GEOM classes	2019-08-13 20:06:55 +00:00
ffsinfo	ffsinfo: Update example to avoid to-be-deprecated vinum	2021-04-03 16:29:14 -04:00
fsck	fsck(8): Fix typo	2022-01-12 13:52:23 +08:00
fsck_ffs	Update fsdb(8) to reflect new structure of fsck_ffs(8).	2022-02-23 15:40:58 -08:00
fsck_msdosfs	fsck_msdosfs: truncate directory entry when the head pointer is invalid.	2021-11-03 22:09:32 -07:00
fsdb	Update fsdb(8) to reflect new structure of fsck_ffs(8).	2022-02-23 15:40:58 -08:00
fsirand	Filesystem utilities that modify the filesystem (growfs(8), tunefs(8),	2020-10-25 01:36:33 +00:00
gbde	gbde(8) - simplify randomisation with arc4random_buf	2019-02-11 00:11:02 +00:00
geom	Create a new GEOM utility, gunion(8).	2022-02-28 16:36:08 -08:00
ggate	ggatec: Use ANSI C definition for init_initial_buffer_size.	2022-01-31 17:12:04 -08:00
growfs	growfs: do not error if filesystem is already requested size	2021-11-15 15:40:57 -05:00
gvinum	gvinum: add deprecation notice	2021-03-28 14:45:05 -04:00
hastctl
hastd	hastd(8) assumes it has no extra file descriptors opened	2020-11-29 13:45:53 +00:00
ifconfig	ifconfig: remove debug printf introduced in 779fd05344	2022-01-29 11:19:01 +00:00
init	init(8): use proper boolean type for globals	2022-02-21 20:16:13 -04:00
ipf	ipfilter: Print protocol when listing NAT table mappings	2022-02-28 12:11:39 -08:00
ipfw	dnctl: Support reading config from file like ipfw(8)	2022-01-03 09:50:18 +01:00
kldconfig	kldconfig(8): Add EXAMPLES to the man page	2020-09-29 17:52:15 +00:00
kldload	kldload(8): Improve phrasing	2021-02-11 06:03:53 +01:00
kldstat	kldstat(8): style(9) fixes.	2021-12-07 11:40:22 +01:00
kldunload
ldconfig	ldconfig: remove two symbols	2022-01-08 12:45:46 +02:00
md5	update external URLs	2022-02-05 08:19:56 +00:00
mdconfig	md: Add MD_MUSTDEALLOC support	2021-09-11 20:04:52 +08:00
mdmfs	mdmfs(8): Fix an issue reported by mandoc	2020-10-03 18:47:50 +00:00
mknod
mksnap_ffs	Remove #define _KERNEL hacks from libprocstat	2021-02-21 11:38:21 +02:00
mount	vfslist.c: initialize skipvfs variable	2022-01-05 23:00:36 +01:00
mount_cd9660	Advise reader to also see mdconfig(8) in mount_cd9660(8).	2018-08-11 08:34:24 +00:00
mount_fusefs	sbin/mount_fusefs/mount_fusefs.8: Fix typos	2021-10-09 09:02:39 -06:00
mount_msdosfs	Fix a few mandoc issues	2020-10-09 14:03:45 +00:00
mount_nfs	mount_nfs: Add a "bgnow" NFS mount option	2022-01-11 08:21:35 -08:00
mount_nullfs	mount_nullfs: rename a local variable	2021-02-12 11:30:52 -07:00
mount_udf
mount_unionfs
natd	natd: Remove uneeded in_cksum.h includes	2021-11-24 13:31:16 -05:00
newfs	Explain the newfs naming convention	2021-04-17 23:16:17 +02:00
newfs_msdos	newfs_msdos: connect the ATF test from NetBSD	2022-02-16 09:56:16 -06:00
nfsiod	pkgbase: Add nfsiod to the FreeBSD-nfs package	2021-08-06 14:37:35 +02:00
nos-tun	pkgbase: Create a FreeBSD-utilities package and make it the default one	2019-09-05 14:15:47 +00:00
nvmecontrol	nvme: fix spelling of Namespace	2022-02-21 10:34:46 -08:00
pfctl	libpfctl: fix creatorid endianness	2022-01-27 09:07:27 +01:00
pfilctl	pfilctl: improve formatting of "hooks" and "heads" command output.	2021-03-19 11:18:05 -07:00
pflogd
ping	update external URL	2022-02-05 17:11:18 +00:00
ping6	Merge ping6 to ping	2020-11-26 04:29:30 +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	[rcorder] [crunch] Fix C function declarations to include void	2020-09-21 17:59:45 +00:00
reboot	boottrace: annotate init and shutdown utilities	2022-02-21 20:16:07 -04:00
recoverdisk	Register the bad read before bailing on terminal errors.	2021-02-02 12:01:38 +00:00
resolvconf
restore	Clean up global variable declarations in the dump and restore	2020-04-04 00:56:56 +00:00
route	route: remove write-only struct hostent from getaddr()	2022-01-06 10:45:44 -05:00
routed	sbin/routed: Remove unused code for sgi and NetBSD.	2020-12-25 17:42:47 -08:00
rtsol	Update Makefile.depend files	2019-12-11 17:37:53 +00:00
savecore	savecore: emit information about saved cores under verbose	2021-12-07 18:39:34 -06:00
sconfig	pkgbase: Put sconfig in FreeBSD-utilities	2021-12-21 10:16:08 +01:00
setkey	update external URL	2022-02-05 17:14:27 +00:00
shutdown	boottrace: annotate init and shutdown utilities	2022-02-21 20:16:07 -04:00
swapon	swapon(8): adapt to the new swapoff(2) interface	2021-12-09 02:48:59 +02:00
sysctl	sysctl: Small style fix	2021-12-05 21:40:47 -07:00
tests
tunefs	Remove #define _KERNEL hacks from libprocstat	2021-02-21 11:38:21 +02:00
umount	Document that umount -A does not unmount /dev	2020-06-18 23:12:55 +00:00
veriexec	veriexec(8): explain that only a unique prefix is required	2022-02-14 13:54:22 -08:00
zfsbootcfg	loader: zfs should support bootonce an nextboot	2020-09-21 09:01:10 +00:00
Makefile	sbin: build ping if at least one of INET & INET6 is enabled	2021-11-28 13:05:39 -05:00
Makefile.amd64	Revert "amd64: Do not build sconfig"	2021-12-21 10:14:45 +01:00
Makefile.arm
Makefile.i386	NVME support is only for x86 and powerpc64.	2018-06-14 01:15:19 +00:00
Makefile.inc	build: provide a default WARNS for all in-tree builds	2020-09-18 17:17:46 +00:00
Makefile.mips
Makefile.powerpc64	NVME support is only for x86 and powerpc64.	2018-06-14 01:15:19 +00:00