freebsd-nq

History

Jeff Roberson 89b0e10910 - Reorder calls to vrele() after calls to vput() when the vrele is a directory. vrele() may lock the passed vnode, which in these cases would give an invalid lock order of child -> parent. These situations are deadlock prone although do not typically deadlock because the vrele is typically not releasing the last reference to the vnode. Users of vrele must consider it as a call to vn_lock() and order it appropriately. MFC After: 1 week Sponsored by: Isilon Systems, Inc. Tested by: kkenn		2006-02-01 00:25:26 +00:00
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00READ
cnode.h	- The c_lock in the coda node does not offer any features over the standard	2005-03-13 12:09:34 +00:00
coda_fbsd.c	Merge the dev_clone and dev_clone_cred event handlers into a single	2005-08-08 19:55:32 +00:00
coda_io.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_kernel.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_namecache.c	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_namecache.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_opstats.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_pioctl.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_psdev.c	Fix -Wundef from compiling the amd64 LINT.	2005-12-04 10:06:06 +00:00
coda_psdev.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_subr.c	- The VI_DOOMED flag now signals the end of a vnode's relationship with	2005-03-13 12:14:56 +00:00
coda_subr.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
coda_venus.c	Disable two users of findcdev. They do the wrong thing now and will	2005-03-15 12:39:30 +00:00
coda_venus.h	Remove the unused credential argument from VOP_FSYNC() and VFS_SYNC().	2005-01-11 07:36:22 +00:00
coda_vfsops.c	o Fix typo in the define: s/MRAK_INT_GEN/MARK_INT_GEN/. The typo	2006-01-09 18:07:06 +00:00
coda_vfsops.h	Replace the workaround for a deadlock bug in Coda with a different	2005-02-20 23:01:57 +00:00
coda_vnops.c	- Reorder calls to vrele() after calls to vput() when the vrele is a	2006-02-01 00:25:26 +00:00
coda_vnops.h	Remove unused coda_fbsd_getpages()	2005-01-19 08:24:53 +00:00
coda.h	Start each of the license/copyright comments with /*-	2005-01-05 23:35:00 +00:00
README
TODO

README

$FreeBSD$

                Announcing the Availability of the
                        Coda Distributed
                           Filesystem
                              for
                         BSD Unix Systems

        Coda is a distributed filesystem like NFS and AFS.  It is
freely available, like NFS.  But it functions much like AFS in being a
"stateful" filesystem.  Coda and AFS cache files on your local
machine to improve performance.  But Coda goes a step further than AFS
by letting you access the cached files when there is no available
network, viz. disconnected laptops and network outages.  In Coda, both
the client and server are outside the kernel which makes them easier
to experiment with.

To get more information on Coda, I would like to refer people to
        http://www.coda.cs.cmu.edu
There is a wealth of documents, papers, and theses there.  There is
also a good introduction to the Coda File System in
        http://www.coda.cs.cmu.edu/ljpaper/lj.html

Coda was originally developed as an academic prototype/testbed.  It is
being polished and rewritten where necessary.  Coda is a work in
progress and does have bugs.  It is, though, very usable.  Our
interest is in making Coda available to as many people as possible and
to have Coda evolve and flourish.

The bulk of the Coda filesystem code supports the Coda client
program, the Coda server program and the utilities needed by both.
All these programs are unix programs and can run equally well on any
Unix platform.  Our main development thrust is improving these
programs.  There is a small part of Coda that deals with the kernel to
filesystem interface.  This code is OS specific (but should not be
platform specific).

Coda is currently available for several OS's and platforms:
        Freebsd-2.2.5: i386
        Freebsd-2.2.6: i386
	Freebsd -current: i386
        linux 2.0: i386 & sparc
        linux 2.1: i386 & sparc
        NetBSD 1.3: i386
	NetBSD -current: i386
The relevant sources, binaries, and docs can be found in
        ftp://ftp.coda.cs.cmu.edu/pub/coda/

We intend to come out with new Coda releases often, not daily.  We
don't want to slight any OS/platform not mentioned above.  We are just
limited in our resources as to what we can support internally.  We
will be happy to integrate OpenBSD support as well as other OS
support.  Also, adding platform support should be relatively easy and
we can discuss this.  The only difficulty is that Coda has a light weight
process package.  It does some manipulations in assembler which would
have to be redone for a different platform.

There are several mailing lists @coda.cs.cmu.edu that discuss coda:
coda-announce and linux-coda.  We are going to revise linux-coda to be
OS neutral, since it is mainly Coda we want to discuss.  We appreciate
comments, feedback, bug reports, bug fixes, enhancements, etc.