Commit Graph

53 Commits

Author SHA1 Message Date
Bruce M Simpson
7e54279b42 Add support for /conf/T/M/remount_optional.
The rc.initdiskless functionality is used by NanoBSD to allow configuration
files to live on a separate configuration slice, which acts as NVRAM, whilst
the system image is mounted read-only.

Normally, if the remount command fails during boot, this is regarded as
a fatal error. If /conf/T/M/remount_optional is present, this error is
non-fatal. If the file is not present, the default behaviour is unchanged.

This is very useful for people building live CD images using FreeBSD,
where the NVRAM lives somewhere completely differently from the system image,
and may be present on removable media which is not present during the
initial boot.
2008-05-15 11:00:23 +00:00
Luigi Rizzo
9b96fa2da3 - put some common code in a function handle_remount();
- add better checks on non-existing directories to prevent error
  messages at run time;
- introduce a function log() to help debugging diskless booting
  when things don't work;
- modify the parsing of diskless_remount so you can add mount_nfs
  options after the pathname. You could use 'remount' to do something
  similar, but this way is more convenient because you don't have to
  hardwire the server name in the command.
- document the above.

I have been running the above in a diskless lab since february on RELENG_6.

MFC after: 1 week
2006-12-03 23:50:29 +00:00
Brooks Davis
401bae3d6b - Document /conf/diskless_remount in the list of special files.
- Note that diskless_remount files may use ".." to support mounts above
  the root path.
- Copy dot files when populating directories from /conf. [1]

PR:		misc/102724 [1]
Submitted by:	Attila Nagy <bra at fsn.hu> [1]
2006-09-01 16:33:15 +00:00
Ruslan Ermilov
fb7e6ed3e6 Fix example:
/conf/base/diskless_remount -> /conf/base/etc/diskless_remount

MFC after:	3 days
2006-08-22 16:21:16 +00:00
Brooks Davis
8b1292ac52 Creating memory file systems with softupdates enabled is pointless,
don't do it.

PR:		conf/85558
Submitted by:	Ralf Wenk <RZ dash FreeBSD0605 at hs dash karlsruhe dot de>
MFC after:	5 days
2006-01-11 21:59:30 +00:00
Brooks Davis
a8e1134a6b Add items to unmount to the front of the list so they are unmounted in
reverse (thus allowing /conf to be unmounted).
2005-11-01 01:36:58 +00:00
Brooks Davis
ed5b9e57cd Switch from pax to tar for extracting cpio archives. pax requires a
writable /tmp (or TMPDIR) and thus is unsuitable for this job.

Tested by:	Joerg Pulz <Joerg dot Pulz at frm2 dot tum dot de>
PR:		conf/88293
2005-10-31 22:00:44 +00:00
Brooks Davis
1c3a359b41 The -x <format> option of pax is for creation of archives, not
extraction.

This will allow cpio archive support to work, at least in situations
where /tmp is writable.  Because pax requires a writable /tmp it is
unsuitable for this task, but replacing it will come in a later commit.

Submitted by:	Joerg Pulz <Joerg dot Pulz at frm2 dot tum dot de>
PR:		conf/88293
2005-10-31 21:07:14 +00:00
Robert Watson
8ed695309f Use sysctl -q when querying for kern.bootp_cookie in order to avoid
printing boot-time errors that don't reflect true error conditions.

MFC after:	1 week
2005-09-15 16:09:28 +00:00
Bruce A. Mah
9bfd3af7d0 Fix minor typo in a comment. 2005-08-28 18:48:04 +00:00
Brooks Davis
13b302a79f Add two new template sources, /conf/bcast/${ipbca} and /conf/ip/${ip}.
These allow large installations to keep their /conf directory down to a
managable number of entries.

Clean up the handling of dhcp_cookie.
2005-08-17 00:28:38 +00:00
Brooks Davis
2af94c5d1d To allow /etc to be as minimal as possible in a diskless setup, we need
to run initdiskless before we run rcorder on /etc/rc.d.  To allow this,
move /etc/rc.d/initdiskless to /etc/rc.initdiskless and run it directly
from /etc/rc.

Remove /etc/rc.d/preseedrandom as it is no longer necessicary (we start
with entropy unblocked) and was only used by initdiskless when it
was needed.

Discussed on:	freebsd-rc
Repocopy by:	peter
2005-04-29 23:02:56 +00:00
David E. O'Brien
32e7342827 Use utils from /rescue vs. /stand. Also use pax rather than cpio & gzip. 2004-12-12 08:04:26 +00:00
Mike Makonnen
b18cb583f6 - Make the header conform to standard rc.d style.
- The 'before ipfw' directive seems bogus, and should instead
  be 'before rcconf'.
2004-11-05 07:35:31 +00:00
Mike Makonnen
337338ee00 Remove the requirement for the FreeBSD keyword as it no longer
makes any sense.

Discussed with: dougb, brooks
MFC after: 3 days
2004-10-07 13:55:26 +00:00
Jens Schweikhardt
d8beb0fd3b Removed whitespace at BOF, EOL & EOF. 2004-06-06 11:46:29 +00:00
Poul-Henning Kamp
8956ceaff0 Initdiskless must run before ipfw, or people will not be able to
use the conf/* stuff for their firewall configuration.

Running ipfw before could seem to make sense in that it would allow
one to setup access to the NFS server on a "default-deny" kernel,
but it is pretty obvious to the casual observer that such a configuration
never makes it far enough to mount the NFS-root in the first place.
2004-04-28 13:18:22 +00:00
Ruslan Ermilov
3ee3cd3165 Replace shell's positional parameters safely. 2004-04-28 09:09:27 +00:00
Poul-Henning Kamp
edf28a672b When using this in non-NFSroot circumstances, mount -t nfs may
return empty.  Add a dummy element to prevent the alternate action
of the shell builtin "set"
2004-04-27 15:42:34 +00:00
Brooks Davis
6ea20e1c98 Band-aid diskless booting by running a new preseedrandom script before
initdiskless.  The output of several commands and if available the
contents of /entropy are feed into /dev/random to kickstart the PRNG.
/etc/rc.d/initrandom is left alone to maintain the previous behavior as
much as possiable.

Further work in this area is probably needed.

Discussed with:	markm
2004-04-15 17:52:53 +00:00
Luigi Rizzo
99e9614386 Extensive documentation changes to the script, but only
comments and empty lines have been touched.

All of this should go in the diskless(8) manpage, now if we had
some kind of 'literate programming' tool to extract the comments
from the script and put them in a reasonable nroff format, it
would be a lot easier to keep code and docs in sync
2004-03-31 08:43:20 +00:00
Luigi Rizzo
220ee8be37 Minor changes mostly as discussed on the lists a few days ago:
+ SUBDIR.cpio.gz prevents files from SUBDIR/ to be copied when
   priming the memory filesystems. This restores the old behaviour
   and makes the copy process a lot more efficient

 + look for templates also in the list of directories supplied by
   bootp/dhcp via the T134 option aka kern.bootp_cookie

 + keep track of directories temporarily mounted with "remount"
   or "diskless_remount" commands and unmount them once we are done
   with them (at the end of this script).
2004-03-31 07:24:15 +00:00
Brooks Davis
14b34e45f8 If /conf/diskless_remount exists, use it to remount the entire /conf
directory.  This allows multiple roots (say for different architectures)
to share the same set of /conf files.
2004-03-12 04:40:16 +00:00
Poul-Henning Kamp
4238829d77 Make this file more generally usable:
Trigger not only on diskless booting sysctls being set, but also
on the existence of the file "/etc/diskless".  But do not try to
extract IP# related keywords in that case.

Add a general "remount" facility to allow non-NFS remounting.
2004-03-09 23:06:50 +00:00
Pawel Jakub Dawidek
bd57d5b0f5 Mark scripts as not usable inside a jail by adding keyword 'nojail'.
Some suggestions from:	rwatson, Ruben de Groot <mail25@bzerk.org>
2004-03-08 12:25:05 +00:00
Doug Barton
76f9428757 Remove trailing whitespace 2003-10-13 08:20:55 +00:00
Doug Barton
9f29b7170b Update references to rc.diskless[12] 2003-10-13 08:18:05 +00:00
Kris Kennaway
63d707097e Bump default /etc size from 2MB to 5MB to deal with bloat^Wgrowth in
the size of /etc.
2003-10-12 00:19:45 +00:00
Max Khon
4bab0ee528 Correct typo in Matt's name. 2003-08-07 21:06:32 +00:00
Brooks Davis
a83659958b Allow diskless_remount files to contain path beginning with / which will
be mounted relative to the NFS root mountpoint.

Reviewed by:	dillon at backplane.com
MFC After:	3 days
2003-06-30 21:47:06 +00:00
John Hay
160b4bbe6a Add another backslash ('\'). 2003-02-15 16:29:20 +00:00
Matthew Dillon
eb7bf00306 Do not unconditionally load the configuration files for the RCNG case.
Instead, load them as part of the rc.d system.  This allows us to prioritize
the initidiskless script so it runs before the configuration files are loaded
and allows us to get rid of the exit 2 hack in /etc/rc.  The exit 2 never
worked anyway since it did not unset the prior configuration, causing the
diskless code to not operate properly.

Do a major cleanup and revamping of the diskless code for RCNG.  This will
be backported to the non-RCNG scripts as well as -stable.

With suggestions from: Mike Makonnen <mtm@identd.net>
MFC after:	7 days
2002-12-22 22:18:41 +00:00
Jens Schweikhardt
143085107b Fix style bugs:
* Space -> tabs conversion.
* Removed blanks before semicolon in "if ... ; then".
* Proper indentation of misindented lines.
* Put a full stop after some comments.
* Removed whitespace at end of line.

Approved by:	silence from gordon
2002-10-12 10:31:31 +00:00
Dima Dorfman
2ca85e3d5e In a diskless setup, rc.d/initdiskless may overwrite parts of /etc on
a per-machine or per-cluster (with different ways of expressing what's
part of a cluster) basis.  In order for this to be effective, rc.conf
has to be reread after initdiskless is finished.  Implement this by
adding a hook to etc/rc which rereads rc.conf by request.  This can
also be implemented by renaming initdiskless to initdiskless.sh and
sourcing rc.conf there manually, but it was decided that, that would
be uglier than a hook in etc/rc.

Developed in concert with:	gordon
2002-10-02 00:59:14 +00:00
Poul-Henning Kamp
320d99c058 Use mdmfs(8) rather than rolling our own RAM-disks.
Sponsored by:	DARPA & NAI Labs.
2002-09-22 09:48:02 +00:00
Dima Dorfman
527597b2d9 Stock -current has more than 300 files in /etc, so 255 inodes for the
/etc filesystem isn't enough; consequently, add "-i 4096" to the newfs
command for /etc.  This results in 1022 inodes, which should be enough
for the forseeable future (although I don't know why we would ever
have more than 1000 files in a default /etc).

Silence by:	-current
2002-07-28 03:41:53 +00:00
Gordon Tetlow
242bd45fb4 Merge in all the changes that Mike Makonnen has been maintaining for a
while. This is only the script pieces, the glue for the build comes next.

Submitted by:   Mike Makonnen <makonnen@pacbell.net>
Reviewed by:    silence on -current and -hackers
Prodded by:     rwatson
2002-07-18 05:00:17 +00:00
David E. O'Brien
c1ab4f157d Utilize dhcp information in the kernel environment if we don't have
hostname and DNS information already.

Submitted by:	Danny Braniss <danny@cs.huji.ac.il>
2002-04-22 21:42:18 +00:00
David E. O'Brien
04e7d65aeb The usage of 'newaliases' needs to be after we know for sure that /usr
is mounted.

Submitted by:	rizzo
2002-02-23 01:49:20 +00:00
David E. O'Brien
5158a0f59f The existing bazaar and site-specific policy in rc.diskless1 is Just Wrong;
and looks like no other Unix diskless configuration I've ever seen.
Thus allow a more traditional /etc.

Note, the use of an MFS /var should also be settable.
Otherwise installing ports(packages) is just a total PITA.
2002-02-22 19:05:22 +00:00
Robert Watson
012ccf288b o Improve the line-wrapping of additional comments, some of which appeared
to be wrapped around 60, others around 40 columns.
2002-01-17 00:10:28 +00:00
Robert Watson
4420bc6773 o Remove a somewhat less comprehensible comment about modifying /etc/rc.
o Improve line-wrapping of another comment for consistency.
2002-01-17 00:08:44 +00:00
Robert Watson
6bbc26ef9f Remove incorrect comments about the population of /etc: no attempt is
made to copy the NFS-mounted on to /tmp/etc, instead, it is populated
entirely from /conf/default, then overriden from /conf/IP.
2001-12-26 17:00:55 +00:00
Brian S. Dean
44e0389495 * Simplify the population of the /etc memory filesystem. To avoid
the null mount, we currently create a temporary mfs on /tmp, copy
    /etc to /tmp, then mount /etc as mfs and copy everything back from
    /tmp, then delete the /tmp mfs.

    The patch eliminates the temporary /tmp mfs and the subsequent
    copying and simply populates the /etc mfs by copying from
    /conf/default/etc.  This requires that /conf/default/etc contain a
    complete copy of all the /etc stuff instead of just overrides.  I
    don't think that is too much of an extra step in setting up a
    diskless environment.

  * Provide the ability to make /tmp a memory filesystem independent
    of /var.  This removes the requirement that /tmp be a symlink to
    /var/tmp and this makes the diskless code work with the default
    filesystem layout.  If a seperate /tmp memory filesystem is
    created, the 'tmpsize' environment variable is used to determine
    its size (default to 10 Meg).

  * Reduce diffs between the -current and -stable versions of these
    files to a bare minimum.  Only the definition of the shell
    function 'mount_md' is different.

Not Objected to by: -arch@, -small@

MFC after: 2 days
2001-05-09 15:13:51 +00:00
Warner Losh
9f474ffc5c Move to using md.
o create a simple wrapper function mount_md that makes it easy to
  move from mount_mfs.

# NOTE: you will need to MAKEDEV md[0123] in order for this to work.

Reviewed by: bsd, keichii
2001-04-25 05:46:40 +00:00
Brian S. Dean
58d3c43935 Eliminate the null mount for /etc for diskless clients. 2001-04-20 23:10:11 +00:00
Brian S. Dean
bb09faafdb Change the order in which /etc files are copied into place; copy
default first, then network-specific files, then host-specific files.
I think this was the original intent, as Matt indicated the previous
code appeared to be a bug.
2001-04-03 00:24:01 +00:00
David E. O'Brien
a1c43e3fbb Add copyright notices. Other systems have been barrowing our /etc files
w/o giving any credit.
2000-10-08 19:20:36 +00:00
Luigi Rizzo
4f9b3f5f33 Cleanup diskless support in current, mostly aligning it to the one
in the 3.x branch. Also remove the dependency on /usr to find the
boot address/interface.
Mostly-submitted-abd-tested-by: MIHIRA Sanpei Yoshiro <sanpei@sanpei.org>
2000-01-06 18:17:38 +00:00
Peter Wemm
6cabfb3832 Add/adjust some $FreeBSD$ tags.
Noted by:	Doug <Doug@gorean.org>
1999-09-13 17:09:08 +00:00