Commit Graph

81 Commits

Author SHA1 Message Date
Kirk McKusick
e924cb6ff9 Clarify that the -r and -R options can be used only to create level 0 dumps.
Suggested by: phk
MFC after:    3 days
2019-06-14 06:10:15 +00:00
Warner Losh
37d6a8f458 Revert size limits.
The size limits came from a flawed understanding of dump records.
The real issue was that dump was bogusly interpreting c_count
sometimes. r334978 fixes that.
2018-06-11 20:38:30 +00:00
Warner Losh
94e18833a8 Document the newly enforced 524288 inode restriction. 2018-06-11 19:32:45 +00:00
Warner Losh
fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
Sevan Janiyan
b26d109830 dump(8) first appeared in V4 UNIX
http://minnie.tuhs.org/cgi-bin/utree.pl?file=V4/man/man8

PR:		212444
Approved by:	bcr (mentor)
Obtained from:	TUHS
MFC after:	4 days
Differential Revision:	https://reviews.freebsd.org/D8105
2016-10-02 23:30:28 +00:00
Joel Dahl
a692c58a90 mdoc: move two sentences from synopsis to description (where they really
belong). With this change, mandoc now formats these manpages properly.
2012-05-23 15:06:13 +00:00
Kirk McKusick
693c40a39a When using dump to generate level 0 dumps which are then rsync'ed
to a remote machine, the fact that the dump date is stored with
each header (inode) record makes rsync significantly less efficient
than necessary. This also applies to inode access times when they
are not important data to retain. When implementing an offsite
backup solution of this type, these dates in particular are not
important, especially if it prevents effective offsite backups.

PR:           bin/91049
Submitted by: Forrest W Christian <fwc@mt.net>
2008-05-23 23:13:14 +00:00
Ruslan Ermilov
8266d47670 Markup fixes. 2006-09-18 11:55:10 +00:00
Thomas Quinot
72408a122a Clarify documentation of '-L' command line switch: the snapshot is
unlinked as soon as the dump starts (and removed when the dump is
completed, and the dump process exits). Previous wording was confusing
because users might expect the snapshot to be visible in the .snap
subdirectory while dump is running.

MFC after:	1 week
2006-08-16 16:28:30 +00:00
Giorgos Keramidas
e388c208b3 Revert a minor glitch of revision 1.69
Submitted by:	Andriy Tkachuk <andrit@ukr.net>
X-MFC after:	RE approval
2006-02-24 15:02:08 +00:00
Warner Losh
2fa0cf5b46 Add the example that green@ used in his commit log for the dump to a
pipe functionality.  I've done a cvs log main.c about a dozen times
now.  Maybe others will find this useful.
2005-12-23 02:18:01 +00:00
Ceri Davies
b1f1271f26 Correct the description of the TAPE environment variable.
Based on:

PR:		docs/84200
Submitted by:	Gary W. Swearingen <garys at opusnet dot com>
MFC after:	1 week
2005-07-31 13:56:19 +00:00
Wes Peters
73e31afa1a Improved error checking for existence of a .snap directory to
generate snapshots in when -L is requested.  If the .snap directory
does not exist, or is not a directory, issue a warning and revert
to the non- live behavior.

Obtained from:	St. Bernard Software RAPID
2005-01-21 22:13:25 +00:00
Ruslan Ermilov
6087df9e8b Sort sections. 2005-01-18 10:09:38 +00:00
Ruslan Ermilov
a866e17077 Added the EXIT STATUS section where appropriate. 2005-01-17 07:44:44 +00:00
Ruslan Ermilov
d04b5dfe6c Assorted markup, grammar, and spelling fixes. 2004-05-17 08:35:43 +00:00
Brian Feldman
c51d70c690 Add -P arguments for dump(8) and restore(8) which allow the user to
use backup methods other than files and tapes.  The -P argument is
a normal sh(1) pipeline with either $DUMP_VOLUME or $RESTORE_VOLUME
defined in the environment, respectively.

For example, I can back up my home to three DVD+R[W]s as so:
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/ad0s2e  40028550 10093140 26733126    27%    /home
green# dump -0 -L -C16 -B4589840 -P 'growisofs -Z /dev/cd0=/dev/fd/0' /home
2004-04-13 02:58:06 +00:00
Brian Feldman
f7c7b87fbd Improve the warnings for dump -L and do not bother doing the snapshot if
it is specified for read-only filesystems.

Submitted by:   Jason Young <jyoung8607@hotmail.com>
PR:     46672
2004-04-12 20:19:32 +00:00
Mark Murray
4c723140a4 Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp
2004-04-09 19:58:40 +00:00
Alexander Langer
93ba0fc8b8 Add RSH to the list of enviroment variables. 2004-01-15 12:13:54 +00:00
Kirk McKusick
b17f40bbda Document that the live dump command (`dump -L') creates its snapshot
in the .snap directory in the root of the filesystem being dumped.
Document that if the .snap directory is missing that it must be
created manually and that it should be owned by user root and
group operator and set to mode 770 before a live dump can be run.
2003-11-18 00:36:40 +00:00
Ken Smith
5324d49a71 - add explanation of what an active file system is
- explain the reason for permitting 32 read errors for a dump

PR:		docs/35602 and docs/35607
Reviewed by:	jhb
Approved by:	blackend (mentor)
2003-11-05 22:17:37 +00:00
Greg Lehey
17fe3d1d42 Remove reference to max block size. dump no longer limits the block size. 2003-07-14 02:22:55 +00:00
Philippe Charnier
9680d7b695 Add section number to .Xr 2003-06-08 12:51:28 +00:00
Ruslan Ermilov
44b81f0f89 Removed all vestiges of KerberosIV. 2003-05-01 21:18:36 +00:00
Mark Murray
8edde085dd De-Kerberise (KerberosIV). KerberosIV is no longer present, and
remote backups can still be done with Kerberos authentication using
SSH and Kerberos 5.
2003-05-01 20:09:58 +00:00
Ruslan Ermilov
1f6a46318d Sort options. 2003-02-23 01:50:07 +00:00
Matthew Dillon
5941e412ca Add a caching option to dump. Use -C. Note that NetBSD has a caching option
called -r but it takes 512 byte blocks instead of megabytes, and I felt a
megabytes specification would be far more useful so I did not use the same
option character.

This will *greatly* improve dump performance at the cost of possibly
missing filesystem changes that occur between passes, and does a fairly
good job making up for the loss of buffered block devices.  Caching is disabled
by default to retain historical behavior.

In tests, dump performance improved by about 40% when dumping / or /usr.

Beware that dump forks and the cache may wind up being larger then you
specify, but a more complex shared memory implementation would not produce
results that are all that much better so I kept it simple for now.

MFC after:	3 days
2003-01-13 19:42:41 +00:00
Sheldon Hearn
2ab3df59b0 Add TAPE to the ENVIRONMENT section and standardize the section, using a
list instead of prose.

MFC after:	1 month
2003-01-10 10:59:11 +00:00
Ruslan Ermilov
463cfa804d Fixed the abuses of .Ql visible on stderr in troff mode.
PR:		docs/37176
2002-12-23 16:04:51 +00:00
Ruslan Ermilov
8d5d039f80 Uniformly refer to a file system as "file system".
Approved by:	re
2002-12-12 17:26:04 +00:00
Kirk McKusick
194a666749 Add the `L' option to dump to notify it that it is dumping a
live filesystem. To obtain a consistent dump image, dump takes
a snapshot of the filesystem and then does a dump of the snapshot.
The snapshot is removed when the dump is complete.

Also add an operator warning that the `L' option should be used
if dump is run on a live filesystem without the `L' option being
specified. The alternative would be to silently use a snapshot
any time that a live filesystem is dumped, but this change in
dump semantics seemed too drastic at this time.

Sponsored by:   DARPA & NAI Labs.
Approved by:	re
2002-12-03 18:21:09 +00:00
Tom Rhodes
5af4935a22 Fix some 'SYNOPSIS' and 'usage' messages. 2002-08-27 00:49:27 +00:00
Tom Rhodes
277ffe6e6c Fix Synopsis 2002-08-26 18:16:39 +00:00
Tom Rhodes
ce66ddb763 s/filesystem/file system/g as discussed on -developers 2002-08-21 18:11:48 +00:00
Philippe Charnier
e1205e80e5 The .Nm utility 2002-07-06 19:34:18 +00:00
Ruslan Ermilov
1ec84e5051 mdoc(7) police: nits. 2002-05-29 16:19:26 +00:00
Tom Rhodes
7ac806655e dump(8)'s manual page is confusing in its use of records, blocks,
blocksizes, etc
does not give the default of -b
only mentiones rdump in the NAME section
uses both filesystem and file system in similar contexts

PR:		34248
Submitted by:	Gary W. Swearingen <swear@blarg.net>
MFC after:	3 days
2002-04-17 02:10:33 +00:00
Ruslan Ermilov
992b9b7a2a mdoc(7) police: tiny fixes. 2002-03-15 14:34:10 +00:00
Ian Dowse
9ac0768d74 Add a new "-S" flag to dump to allow it just print out dump estimate
size and then exit.

PR:		bin/35450
Submitted by:	Mark Hannon <markhannon@optushome.com.au>
Obtained from:	NetBSD
MFC after:	1 week
2002-03-01 20:54:23 +00:00
Ian Dowse
19f8080e63 On receipt of a SIGINFO, schedule an immediate printout of the
percentage complete and remaining time estimate.

PR:		bin/32138
Submitted by:	mi
2002-02-16 20:22:26 +00:00
Dima Dorfman
71717f5def Make it clear that dump(8)'s honoring of the UF_NODUMP flag is subject
to the -h option.  While here, xref chflags(1).

PR:		33907
Submitted by:	Gary W. Swearingen <swear@blarg.net>
2002-02-10 22:14:09 +00:00
Dima Dorfman
03578dfec7 Sort options in DESCRIPTION. 2001-07-15 14:00:19 +00:00
Dima Dorfman
478810b578 Bump date for addition of -D. 2001-07-15 13:57:06 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Ruslan Ermilov
9fe48c6e8d mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 11:04:34 +00:00
Ruslan Ermilov
448087ae70 mdoc(7) police:
Restored .Pa for ``dumpdates'' (it's still a file).
Also, removed duplicate ``file'' words.
2001-07-10 09:34:55 +00:00
Matthew Dillon
988d64c256 Add manual page and usage for dump -D (supplied by Dima Dorfman) (will also
be MFC'd)

Submitted by: Dima Dorfman <dima@unixfreak.org>
2001-07-09 03:06:56 +00:00
David E. O'Brien
ff7405adba bye-bye documented raw devices 2001-03-09 13:06:53 +00:00
David E. O'Brien
801382fa98 Support inheritance of the "nodump" flag down a hierarchy.
Submitted by:	Dima Dorfman <dima@unixfreak.org>
Obtained from:	NetBSD
2001-03-03 11:35:50 +00:00