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Revision 1.2, Tue May 11 05:57:47 2004 UTC (13 years, 5 months ago) by nathans
Branch: MAIN
Changes since 1.1: +21 -12 lines

Merge up to 2.6.6

version 1.0.2 January 29, 2004

A Partial List of Known Problems and Missing Features
=====================================================

Contributions are welcome.  There are plenty of opportunities
for visible, important contributions to this module.  Here
is a partial list of the known problems and missing features:

a) Support for SecurityDescriptors for chmod/chgrp/chown so
these can be supported for Windows servers

b) Better pam/winbind integration

c) multi-user mounts - multiplexed sessionsetups over single vc
(ie tcp session) - prettying up needed

d) Kerberos/SPNEGO session setup support - (started)

e) NTLMv2 authentication (mostly implemented)

f) MD5-HMAC signing SMB PDUs when SPNEGO style SessionSetup 
used (Kerberos or NTLMSSP). Signing alreadyimplemented for NTLM
	and raw NTLMSSP already. This is important when enabling
	extended security and mounting to Windows 2003 Servers

f) Directory entry caching relies on a 1 second timer, rather than 
using FindNotify or equivalent.  - (started)

g) A few byte range testcases fail due to POSIX vs. Windows/CIFS
style byte range lock differences

h) quota support

i) support for the Linux 2.5 kernel new feature get_xattr and set_xattr
which will allow us to expose dos attributes as well as real
ACLs

k) finish writepages support (multi-page write behind for improved
performance) and syncpage

l) hook lower into the sockets api (as NFS/SunRPC does) to avoid the
extra copy in/out of the socket buffers in some cases.

m) finish support for IPv6

o) Better optimize open (and pathbased setfilesize) to reduce the
oplock breaks coming from windows srv.  Piggyback identical file
opens on top of each other by incrementing reference count rather
than resending (helps reduce server resource utilization and avoid
spurious oplock breaks).

p) Improve performance of readpages by sending more than one read
at a time when 8 pages or more are requested.


KNOWN BUGS (updated January 30, 2004)
====================================
1) existing symbolic links (Windows reparse points) are recognized but
can not be created remotely. They are implemented for Samba and those that
support the CIFS Unix extensions but Samba has a bug currently handling
symlink text beginning with slash
2) follow_link and readdir code does not follow dfs junctions
but recognizes them
3) create of new files to FAT partitions on Windows servers can
succeed but still return access denied (appears to be Windows 
not client problem).  NTFS partitions do not have this problem.
4) debug connectathon special test case nfs_idem (which does
some invalid symlink naming, or at least what Samba thinks
is an invalid symlink target).
5) debug connectation lock test case 10 which fails against
Samba (may be unmappable due to POSIX to Windows lock model
differences but worth investigating).  Also debug Samba to 
see why lock test case 7 takes longer to complete to Samba
than to Windows.

Misc testing to do
=================
1) check out max path names and max path name components against various server
types.

2) Modify file portion of ltp so it can run against a mounted network
share and run it against cifs vfs.

3) Additional performance testing and optimization using iozone and similar - 
there are some easy changes that can be done to parallelize sequential writes,
and when signing is disabled to request larger read sizes (larger than 
negotiated size) and send larger write sizes to modern servers.

4) More exhaustively test the recently added NT4 support