Commit Graph

78 Commits

Author SHA1 Message Date
Edward Tomasz Napierala
d5b0fb47eb Add 'p' postfix to mdconfig(8).
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-10-10 09:37:31 +00:00
Edward Tomasz Napierala
0efd9bfd47 Add "null" backend to mdconfig(8). This does exactly what the name
suggests, and is somewhat useful for benchmarking.

MFC after:	1 month
No objections from:	kib
Sponsored by:	The FreeBSD Foundation
2013-12-04 07:38:23 +00:00
Hiroki Sato
4103b0b025 Return 0 if:
1. "-u N" specified, no -f, and mdN found,
  2. no -u, "-f /pathname" specified, and mdN associated with /pathname found,
  3. "-u N" specified, "-f /pathname" specified, and both of them found,
  4. "-l" specified and no -f,
  5. "-l" specified, "-f /pathname" specified, and /pathname found.

otherwise return -1.

Spotted by:	Julian H. Stacey
2013-10-24 01:06:44 +00:00
Xin LI
cab9f71ffe Resolve fflag with realpath().
MFC after:	2 weeks
2013-07-31 07:06:58 +00:00
Xin LI
fa3483e67c When listing with -f, skip all memory disks that are not vnode-backed.
Noticed by:	kevlo
MFC after:	3 days
2013-07-02 19:42:47 +00:00
Hiroki Sato
db3fdd7f63 - Use length of _PATH_DEV instead of a hardcoded value[*].
- Use MD_NAME for "md".

Pointed out by:	trasz [*]
MFC after:	1 week
2013-06-21 01:47:22 +00:00
Hiroki Sato
dc017e3401 eturn -1 when the specified backing store file is not found in the md
device list.

MFC after:	1 week
2013-06-20 17:01:02 +00:00
Hiroki Sato
b78ae23fdd - Add "-f file" support to listing mode (-l). When a -f option is
specified, only md(4) devices which have the specified file as backing
  store are displayed.
- Use MD_NAME instead of "md".
- Use _PATH_DEV instead of "/dev/".

MFC after:	1 week
2013-06-20 14:30:16 +00:00
Jaakko Heinonen
734e78dfcb Disallow attaching preloaded memory disks via ioctl.
- The feature is dangerous because the kernel code didn't check
  validity of the memory address provided from user space.
- It seems that mdconfig(8) never really supported attaching preloaded
  memory disks.
- Preloaded memory disks are automatically attached during md(4)
  initialization. Thus there shouldn't be much use for the feature.

PR:		kern/169683
Discussed on:	freebsd-hackers
2012-11-21 16:56:47 +00:00
Edward Tomasz Napierala
dc604f0cf6 Make it possible to resize md(4) devices.
Reviewed by:	kib
Sponsored by:	FreeBSD Foundation
2012-07-07 20:32:21 +00:00
Edward Tomasz Napierala
cff3dc0871 Add missing "static". 2012-03-14 10:10:15 +00:00
Edward Tomasz Napierala
77c437734c Rewrite option parsing in mdconfig(8). This makes it more user-friendly
by removing the ordering requirements and adding more descriptive error
messages; it also makes it more readable and maintainable.

Sponsored by:	The FreeBSD Foundation
2012-01-27 11:48:44 +00:00
Edward Tomasz Napierala
89ef44efa3 Replace the beerware license on mdconfig(8) with standard 2-clause BSD.
Approved by:	phk@
2012-01-21 11:48:48 +00:00
Dag-Erling Smørgrav
6c49c6cff2 Somewhere around the 473rd time I mistyped "mdconfig file" instead of
"mdconfig -f file", I decided that it would be easier to make mdconfig
DWIM than to teach my fingers to type the correct command line.

MFC after:	3 weeks
2011-04-29 22:40:11 +00:00
Dag-Erling Smørgrav
3b39802214 whitespace nit - sorry for the churn 2011-04-27 21:40:49 +00:00
Dag-Erling Smørgrav
e81d0f5a74 whitespace nit 2011-04-27 21:39:59 +00:00
Rebecca Cran
c3e257a9e7 Add a check to make sure the provider name is "mdN" before printing the
unit number.

Suggested by: 	jh
MFC after:	3 days
2011-02-14 09:58:47 +00:00
Rebecca Cran
6992d350af Only print the unit number when invoked with the -n flag.
PR:	bin/144300
Submitted by:	arundel
MFC after:	3 days
2011-02-13 18:30:17 +00:00
Joel Dahl
db28020476 Use "cylinder" instead of "cyl" for consistency.
Reviewed by:	phk
2010-11-13 15:28:44 +00:00
Jaakko Heinonen
a4ca6a4926 Make mdconfig(8) WARNS=6 clean:
- Constify geom_config_get() name argument.
- Add void keyword for usage().
- Initialize mdunit to NULL.
- Don't call md_prthumanval() at all if length is NULL.

Approved by:	trasz (mentor)
2010-01-22 08:51:58 +00:00
Jaakko Heinonen
0e3ebc63e6 Print sizes up to INT64_MAX in md_prthumanval().
PR:		bin/125365
Approved by:	trasz (mentor)
MFC after:	2 weeks
2010-01-18 14:07:41 +00:00
Edward Tomasz Napierala
a9ebb31183 Add the possibility to specify "-o force" with "mdconfig -du".
Reviewed by:	scottl
Approved by:	rwatson (mentor)
Sponsored by:	FreeBSD Foundation
2009-01-10 17:17:18 +00:00
Dmitry Morozovsky
c94b8307db Add -v (verbose) option to -l command, to show size and backing store
of all md devices at one time.

Approved by:	phk
MFC after:	2 weeks
2008-06-21 15:04:42 +00:00
Florent Thoumie
69fcb5379c Fix exit code when using -l on a non-existent md(4) device.
PR:		conf/116177
Submitted by:	Remi Guyomarch <rguyom@pobox.com>
MFC after:	3 days
2007-11-16 17:40:24 +00:00
Nick Hibma
7090e3d10c Kris suggested that swap is a better choice as a default than malloc.
MFC:	1 week
2007-02-20 22:04:23 +00:00
Nick Hibma
35ce0ff2f2 [Found the original diff I made, see previous commit for other part]
Assume '-a' and '-t malloc' flags for '-s <size>' (malloc ramdisk) if not
specified.

Reviewed by:	phk (some time ago)
MFC:		1 week
2007-02-20 21:29:30 +00:00
Nick Hibma
1253fe1ead Make attach the default for -f. That way
mdconfig -f image

works like a charm.

Reviewed by:	phk (some time ago)
MFC:		1 week
2007-02-20 21:04:12 +00:00
Jason Evans
c3345c667e Unbreak the build. 2006-03-27 05:33:35 +00:00
Wojciech A. Koszek
ea3d97ae67 For now, bring back some of the old bits as a fix for specifying md(4)
device number at creation time with -u option. Together with XMLizing
mdconfig(8), I broke this functionality.

This change is temporary. Complete fix will be commited soon.

Approved by:	cognet (mentor)
2006-03-27 00:46:22 +00:00
Wojciech A. Koszek
c27a895433 Teach md(4) and mdconfig(8) how to understand XML. Right now there won't be
a problem with listing large number of md(4) devices. Either 'list' or
'query' mode uses XML.

Additionally, new functionality was introduced. It's possible to pass
multiple devices to -u:

	# ./mdconfig -l -u md0,md1

Approved by:	cognet (mentor)
2006-03-26 23:21:11 +00:00
Wojciech A. Koszek
4bfd989f3e Keep proper order of includes. Additionally, sort them. Make functions used
in that file static.

Approved by:	cognet (mentor)
2006-03-26 22:52:36 +00:00
Pawel Jakub Dawidek
a921cb3130 Use kld(3) for loading geom_md.ko. 2006-02-18 11:40:24 +00:00
Dima Dorfman
7e06d7bcbc Sort the list results by the unit number. The list returned by the
kernel is in the order the devices were made, which is not useful to
the user. Also, remove the "%d more" test since the kernel does not
return the complete count in md_pad[0] (maybe it should?).

Submitted by:	Wojciech A. Koszek
2005-12-22 10:32:11 +00:00
Pawel Jakub Dawidek
d941425873 Rename GEOM class kernel module g_md.ko to geom_md.ko for consistency
with the rest.

mdconfig.c:	Simplify mdmaybeload() function.
mdioctl.h:	Removed (now unused) #define.
loader.conf:	Sort GEOM classes properly.

OK'ed by:	phk
2005-11-11 11:31:23 +00:00
Christian S.J. Peron
c313f09bfb When using files as backing stores for devices, and the user has requested the
device be created read+write, check to see if the backing store is read only
through the use of the access(2) system call. If this check fails returning
EACCES, EPERM or EROFS then gracefully downgrade the access to read only. Also
print a warning message to stderr, informing the user that the access mode
they requested is not available.

This behavior used to be handled by md(4) but was changed in revision 1.154

Discussed with:	pjd, phk, Dario Freni <saturnero at freesbie dot org>
Reviewed by:	phk
2005-08-30 16:45:32 +00:00
Pawel Jakub Dawidek
5d19b2f993 We can specify device size in bytes. Document this in usage. 2005-03-01 14:56:49 +00:00
Michael Reifenberger
d111a5c972 Document the terabyte "-s" parameter in the usage string.
Split the usage line to not exceed 80 chars.
2005-02-21 09:09:07 +00:00
Ruslan Ermilov
8d646af581 Sync program's usage() with manpage's SYNOPSIS. 2005-02-10 09:19:34 +00:00
Pawel Jakub Dawidek
0d79319a76 Allow to specify device size in bytes.
MFC after:	1 week
2005-01-22 20:02:01 +00:00
Pawel Jakub Dawidek
88b5b78d59 Rewrite piece of code which I committed some time ago that allows to
show file name for 'mdconfig -l -u <x>' command.
This allows to preserve API/ABI compatibility with version 0 (that's why
I changed version number back to 0) and will allow to merge this change
to RELENG_5.

MFC after:	5 days
2004-12-27 17:20:06 +00:00
Ruslan Ermilov
78bb116290 Sync usage() with manpage SYNOPSIS and code. 2004-11-13 17:08:52 +00:00
Pawel Jakub Dawidek
61a6eb62ec For file backed md(4) devices output their source file via
'mdconfig -l -u <unit>'.
Bump version number, as this change breaks ABI/API.
2004-11-06 13:07:02 +00:00
Dima Dorfman
9a777b93be If there aren't any devices to list, output nothing instead of an
empty line. This is consistent with other utilities.

While I'm here, remove artifacts of the previous list implementation.
2004-11-06 09:56:27 +00:00
Pawel Jakub Dawidek
b830359bc5 - Make md(4) 64-bit clean.
After this change it should be possible to use very big md(4) devices.
- Clean up and simplify the code a bit.
- Use humanize_number(3) to print size of md(4) devices.
- Add 't' suffix which stands for terabyte.
- Make '-S' to really work with all types of devices.
- Other minor changes.
2004-09-16 21:32:13 +00:00
John-Mark Gurney
d31ba6257b add support for documented readonly option...
also print out the option that is unknow so that the user knows what (s)he
did wrong..

MFC after:	3 days
2004-09-08 20:28:29 +00:00
John-Mark Gurney
a246f097d6 change the name of the md module, to g_md, introduce a define with the
name MD_MODNAME, and make mdconfig use this new define...
2004-08-09 06:45:20 +00:00
Poul-Henning Kamp
e869d3777e Give better diagnostic for problems with backing files. 2004-07-25 08:17:23 +00:00
Poul-Henning Kamp
7a6b2b6429 Fix a long-standing deadlock issue with vnode backed md(4) devices:
On vnode backed md(4) devices over a certain, currently undetermined
size relative to the buffer cache our "lemming-syncer" can provoke
a buffer starvation which puts the md thread to sleep on wdrain.

This generally tends to grind the entire system to a stop because the
event that is supposed to wake up the thread will not happen until a fair
bit of the piled up I/O requests in the system finish, and since a lot
of those are on a md(4) vnode backed device which is currently waiting
on wdrain until a fair amount of the piled up ... you get the picture.

The cure is to issue all VOP_WRITES on the vnode backing the device
with IO_SYNC.

In addition to more closely emulating a real disk device with a
non-lying write-cache, this makes the writes exempt from rate-limited
(there to avoid starving the buffer cache) and consequently prevents
the deadlock.

Unfortunately performance takes a hit.

Add "async" option to give people who know what they are doing the
old behaviour.
2004-03-10 20:41:09 +00:00
Alexander Kabaev
8a50130bbb Do not compare unsigned int values with ULONG_MAX. The comparison is
always false on 64bit platforms and GCC 3.3.1 issues warning there.
2003-07-11 05:47:05 +00:00
Robert Watson
f79c46d3f4 Add "-n" argument, which causes mdconfig to simply print the unit
number X, rather than mdX, making it easier to script tests that
use md devices but don't want to make assumptions about any existing
md use (such as in diskless environments).
2003-06-11 06:38:24 +00:00