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09647430 |
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28-Nov-2023 |
Konstantin Belousov <kib@FreeBSD.org> |
sys/sys: Remove some more vestiges of the $FreeBSD$ Reviewed by: imp Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D42824
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29363fb4 |
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23-Nov-2023 |
Warner Losh <imp@FreeBSD.org> |
sys: Remove ancient SCCS tags. Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
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95ee2897 |
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16-Aug-2023 |
Warner Losh <imp@FreeBSD.org> |
sys: Remove $FreeBSD$: two-line .h pattern Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
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3703c188 |
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11-Sep-2021 |
Ka Ho Ng <khng@FreeBSD.org> |
md: Add MD_MUSTDEALLOC support This adds an option to detect if hole-punching is implemented by the underlying file system. If this flag is set, and if the underlying file system does not support hole-punching, md(4) fails BIO_DELETE requests with EOPNOTSUPP. Sponsored by: The FreeBSD Foundation Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D31883
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dcb235ab |
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16-Aug-2019 |
Brooks Davis <brooks@FreeBSD.org> |
md(4): remove the unused and unusable MDIOCLIST ioctl. It is unused, the ABI was broken in r322969, and it is broken by design (more than MDNPAD md devices can exist and there is no way to retreive them with this interface). mdconfig(8) was converted to use libgeom to obtain this information in r157160 and any other consumers of MDIOCLIST should likewise be converted. Reviewed by: emaste Relnotes: yes Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D18936
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9e5ed859 |
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21-Dec-2018 |
Bruce Evans <bde@FreeBSD.org> |
Use VOP_ADVISE() with POSIX_FADV_DONTNEED instead of IO_DIRECT to implement not double-caching for reads from vnode-backed md devices. Use VOP_ADVISE() similarly instead of !IO_DIRECT unsimilarly for writes. Add a "cache" option to mdconfig to allow changing the default of not caching. This depends on a recent commit to fix VOP_ADVISE(). A previous version had optimizations for sequential i/o's (merge the i/o's and only uncache for discontiguous i/o's and for full blocks), but optimizations and knowledge of block boundaries belong in VOP_ADVISE(). Read-ahead should also be handled better, by supporting it in md and discarding it in VOP_ADVISE(). POSIX_FADV_DONTNEED is ignored by zfs, but so is IO_DIRECT. POSIX_FADV_DONTNEED works better than IO_DIRECT if it is not ignored, since it only discards from the buffer cache immediately, while IO_DIRECT also discards from the page cache immediately. IO_DIRECT was not used for writes since it was claimed to be too slow, but most of the slowness for writes is from doing them synchronously by default. Non-synchronous writes still deadlock in many cases. IO_DIRECT only has a special implementation for ffs reads with DIRECTIO configured. Otherwise, if it is not ignored than it uses the buffer and page caches normally except for discarding everything after each i/o, and then it has much the same overheads as POSIX_FADV_DONTNEED. The overheads for reading with ffs and DIRECTIO were similar in tests of md. Reviewed by: kib
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c92c85ff |
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13-Mar-2018 |
Brooks Davis <brooks@FreeBSD.org> |
md_pad is used by MDIOCLIST and not available for future use. MFC after: 1 week
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51369649 |
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20-Nov-2017 |
Pedro F. Giffuni <pfg@FreeBSD.org> |
sys: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
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f7ca2bbe |
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28-Aug-2017 |
Maxim Sobolev <sobomax@FreeBSD.org> |
Add ability to label md(4) devices. This feature comes from the fact that we rely memory-backed md(4) in our build process heavily. However, if the build goes haywire the allocated resources (i.e. swap and memory-backed md(4)'s) need to be purged. It is extremely useful to have ability to attach arbitrary labels to each of the virtual disks so that they can be identified and GC'ed if neecessary. MFC after: 4 weeks Differential Revision: https://reviews.freebsd.org/D10457
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9a81ba0f |
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31-May-2017 |
Stephen J. Kiernan <stevek@FreeBSD.org> |
Add MD_VERIFY option to enable O_VERIFY in open for vnode type. Add -o [no]verify option to mdconfig (and document in man page.) Implement GEOM attribute MNT::verified to ask md if the backing vnode is verified. Check for MNT::verified in cd9660 mount to flag the mount as MNT_VERIFIED if the underlying device has been verified. Reviewed by: rwatson Approved by: sjg (mentor) Obtained from: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D2902
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fbbd9655 |
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28-Feb-2017 |
Warner Losh <imp@FreeBSD.org> |
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
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0efd9bfd |
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04-Dec-2013 |
Edward Tomasz Napierala <trasz@FreeBSD.org> |
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
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dc604f0c |
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07-Jul-2012 |
Edward Tomasz Napierala <trasz@FreeBSD.org> |
Make it possible to resize md(4) devices. Reviewed by: kib Sponsored by: FreeBSD Foundation
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5ad58319 |
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25-Jan-2012 |
Edward Tomasz Napierala <trasz@FreeBSD.org> |
Fix comment.
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a7d5f7eb |
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19-Oct-2010 |
Jamie Gritton <jamie@FreeBSD.org> |
A new jail(8) with a configuration file, to replace the work currently done by /etc/rc.d/jail.
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d7f03759 |
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19-Oct-2008 |
Ulf Lilleengen <lulf@FreeBSD.org> |
- Import the HEAD csup code which is the basis for the cvsmode work.
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d9414258 |
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11-Nov-2005 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
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
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60727d8b |
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06-Jan-2005 |
Warner Losh <imp@FreeBSD.org> |
/* -> /*- for license, minor formatting changes
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88b5b78d |
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27-Dec-2004 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
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
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61a6eb62 |
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06-Nov-2004 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
For file backed md(4) devices output their source file via 'mdconfig -l -u <unit>'. Bump version number, as this change breaks ABI/API.
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b830359b |
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16-Sep-2004 |
Pawel Jakub Dawidek <pjd@FreeBSD.org> |
- 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.
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a246f097 |
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09-Aug-2004 |
John-Mark Gurney <jmg@FreeBSD.org> |
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...
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82c6e879 |
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06-Apr-2004 |
Warner Losh <imp@FreeBSD.org> |
Remove advertising clause from University of California Regent's license, per letter dated July 22, 1999. Approved by: core
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7a6b2b64 |
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10-Mar-2004 |
Poul-Henning Kamp <phk@FreeBSD.org> |
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.
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4e8bfe14 |
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09-Apr-2003 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Add a couple of undocumented test options to MD(4) to aid in regression testting of GEOM.
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ebe789d6 |
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03-Mar-2003 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Add a "-S sectorsize" option to enable Kirk to find a bug :-)
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b6532aa9 |
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27-Jan-2003 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Add an ioctl to return the unit numbers of the configured md devices.
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53d745bc |
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19-Dec-2001 |
Dima Dorfman <dd@FreeBSD.org> |
Actually make use of the md_version field of 'struct mdio'. In order not to needlessly break compatibility, decrement MDIOVERSION to 0. Approved by: phk
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26a0ee75 |
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07-Aug-2001 |
Dima Dorfman <dd@FreeBSD.org> |
Introduce a force option, MD_FORCE, that instructs the driver to bypass some extra anti-foot-shooting measures. Currently, its only effect is to allow detaching a device while it's still open (e.g., mounted). This is useful for testing how the system reacts to a disk suddenly going away, which can happen with some removeable media. At this point, the force option is only checked on detach, so it would've been possible to allow the option to be passed with the MDIOCDETACH operation. This was not done to allow the possibility of having the force flag influence other tests in the future, which may not necessarily deal with detaching the device. Reviewed by: sobomax Approved by: phk
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174b5e9a |
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25-Feb-2001 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Make "md" and "mdctl" macroized parameters. Implement "-l" option to mdconfig which can list one or all md devices. Submitted by: Dima Dorfman <dima@unixfreak.org>
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e06b153a |
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01-Jan-2001 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Add padding space and a version number to the md_ioctl structre for future extension. Add ability to create a preload disk giving an address and a length (suggested by imp) Fix bug relating to very small md(4) devices. Update md.c copyright to reflect the status of code copied from vn.c. (noticed by dillon)
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e33941c7 |
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31-Dec-2000 |
Poul-Henning Kamp <phk@FreeBSD.org> |
Add compress option at the instigation of rgrimes.
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e159de56 |
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28-Dec-2000 |
Poul-Henning Kamp <phk@FreeBSD.org> |
This is repo-copied from vnioctl.h
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447deba3 |
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16-Sep-1999 |
Matthew Dillon <dillon@FreeBSD.org> |
Fix a bug in the block number calculation for VN disks with a sector size != 512 that are configured without a label. The bug should only have effected swap-backed VN mounts without a label. Add several major features to VN. In the kernel we add a swap pre-reservation capability, which can be used to guarentee seek consistency for swap-backed VN nodes. This also incidently allows a swap-backed VN filesystem to be recovered after a crash in some cases (if the same swap blocks happen to be reserved). We also add a number of new options to vnconfig which do the work of pre-zeroing or creating/truncating/extending a file which greatly simplifies using VN in a file-backed configuration. Add FreeBSD CVS label to sys/sys/vnioctl.h, as well as a new ioctl flag for the swap pre-reservation feature. Reviewed by: Alan Cox <alc@cs.rice.edu>, David Greenman <dg@root.com>
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2b14f991 |
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28-Aug-1995 |
Julian Elischer <julian@FreeBSD.org> |
Reviewed by: julian with quick glances by bruce and others Submitted by: terry (terry lambert) This is a composite of 3 patch sets submitted by terry. they are: New low-level init code that supports loadbal modules better some cleanups in the namei code to help terry in 16-bit character support some changes to the mount-root code to make it a little more modular.. NOTE: mounting root off cdrom or NFS MIGHT be broken as I haven't been able to test those cases.. certainly mounting root of disk still works just fine.. mfs should work but is untested. (tomorrows task) The low level init stuff includes a total rewrite of init_main.c to make it possible for new modules to have an init phase by simply adding an entry to a TEXT_SET (or is it DATA_SET) list. thus a new module can be added to the kernel without editing any other files other than the 'files' file.
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5511b2e4 |
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11-Mar-1995 |
Poul-Henning Kamp <phk@FreeBSD.org> |
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
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6f6b3f76 |
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04-Dec-1994 |
Poul-Henning Kamp <phk@FreeBSD.org> |
ioctl definitions for the vn driver.
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