Date: Wed, 14 Apr 1999 20:12:16 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Wilko Bulte <wilko@yedi.iaf.nl> Cc: rb@gid.co.uk (Bob Bishop), current@FreeBSD.ORG Subject: experimental patch avail (was Re: NFS, blocks of NULLs in files) Message-ID: <199904150312.UAA38227@apollo.backplane.com> References: <199904142054.WAA02242@yedi.iaf.nl>
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WARNING!!!! --------------------------------- WARNING!!!!
WARNING!!!! --------------------------------- WARNING!!!!
WARNING!!!! --------------------------------- WARNING!!!!
Do not use this patch unless you are willing to lose whole
filesystems!
WARNING!!!! --------------------------------- WARNING!!!!
WARNING!!!! --------------------------------- WARNING!!!!
WARNING!!!! --------------------------------- WARNING!!!!
This patch is currently under test. To use it, undo any previously patches
you have made and then apply.
http://www.backplane.com/FreeBSD4/
The patch is rather complex. It rips out much of the piecemeal ranging
code in the VFS/BIO system that had previously been added to support
piecemeal reads and writes. Why? Because the crap doesn't work. We
will eventually fix it all ( with a scheme that doesn't require hooks in
all the VFS/BIO routines! ).
For now, though, the idea is to first make NFS work properly. We will
worry about optimizing it later.
Since this patch modifies code that effects UFS as well as NFS, please
please please do *not* run it on any machine containing data critical to
you.
As I said, this patch has not been tested a huge amount yet, so there are
probably still bugs. It passed all my preliminary tests ( that check for
various known NFS bugs ), and I was able to build the kernel. I'm building
the world right now.
-Matt
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