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cifs: minor updates to documentation
Update cifs "TODO" file.
Signed-off-by: Steve French <stfrench@microsoft.com>
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Documentation/filesystems/cifs/TODO
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Documentation/filesystems/cifs/TODO
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Version 2.11 September 13, 2017
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Version 2.14 December 21, 2018
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A Partial List of Missing Features
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==================================
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for visible, important contributions to this module. Here
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is a partial list of the known problems and missing features:
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a) SMB3 (and SMB3.02) missing optional features:
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a) SMB3 (and SMB3.1.1) missing optional features:
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- multichannel (started), integration with RDMA
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- directory leases (improved metadata caching), started (root dir only)
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- T10 copy offload ie "ODX" (copy chunk, and "Duplicate Extents" ioctl
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d) quota support (needs minor kernel change since quota calls
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to make it to network filesystems or deviceless filesystems)
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e) Compounding (in progress) to reduce number of roundtrips, and also
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better optimize open to reduce redundant opens (using reference counts more).
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e) Additional use cases where we use "compoounding" (e.g. open/query/close
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and open/setinfo/close) to reduce the number of roundtrips, and also
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open to reduce redundant opens (using deferred close and reference counts more).
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f) Finish inotify support so kde and gnome file list windows
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will autorefresh (partially complete by Asser). Needs minor kernel
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k) Add tools to take advantage of more smb3 specific ioctls and features
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(passthrough ioctl/fsctl for sending various SMB3 fsctls to the server
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is in progress)
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is in progress, and a passthrough query_info call is already implemented
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in cifs.ko to allow smb3 info levels queries to be sent from userspace)
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l) encrypted file support
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m) improved stats gathering, tools (perhaps integration with nfsometer?)
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m) improved stats gathering tools (perhaps integration with nfsometer?)
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to extend and make easier to use what is currently in /proc/fs/cifs/Stats
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n) allow setting more NTFS/SMB3 file attributes remotely (currently limited to compressed
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file attribute via chflags) and improve user space tools for managing and
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v) POSIX Extensions for SMB3.1.1 (started, create and mkdir support added
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so far).
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w) Add support for additional strong encryption types, and additional spnego
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authentication mechanisms (see MS-SMB2)
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KNOWN BUGS
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====================================
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See http://bugzilla.samba.org - search on product "CifsVFS" for
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negotiated size) and send larger write sizes to modern servers.
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4) More exhaustively test against less common servers
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5) Continue to extend the smb3 "buildbot" which does automated xfstesting
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against Windows, Samba and Azure currently - to add additional tests and
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to allow the buildbot to execute the tests faster.
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6) Address various coverity warnings (most are not bugs per-se, but
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the more warnings are addressed, the easier it is to spot real
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problems that static analyzers will point out in the future).