[RFC PATCH] smbd: resilient file handle support

Bryan Burgin bburgin at microsoft.com
Tue Feb 23 15:09:14 UTC 2016

[MS-RSVD] now has two open device context structures: V1 and V2.  See the preview markup at http://download.microsoft.com/download/C/6/C/C6C3C6F1-E84A-44EF-82A9-49BD3AAD8F58/Windows/[MS-RSVD-Diff].pdf and SVHDX_OPEN_DEVICE_CONTEXT and SVHDX_OPEN_DEVICE_CONTEXT_V2.  You should be able to ignore either if you don't recognize this?  Are you ignoring or sending back an error?  There's a bit of discovery that I had with Steve French and ignoring contexts you don't understand is appropriate.

I would suggest opening a case with us so we (I) can work with you directly.  Please send mail to the Microsoft Dochelp alias as well as your technical mail list); we probably hijacked this thread too much already and should start a new thread anyway.  Also, please supply a network trace.


-----Original Message-----
From: Uri Simchoni [mailto:uri at samba.org] 
Sent: Tuesday, February 23, 2016 1:30 AM
To: Stefan Metzmacher <metze at samba.org>; Bryan Burgin <bburgin at microsoft.com>; samba-technical at lists.samba.org
Subject: Re: [RFC PATCH] smbd: resilient file handle support

On 02/22/2016 06:56 PM, Stefan Metzmacher wrote:
> Hi,
>> Then there is some other cause to this.  I'll be happy to work on 
>> this with you or any Samba colleague that is willing to work on this.  
>> When you are ready, please send mail to me ("bburgin (at) microsoft (dot) com") AND to Dochelp ("dochelp (at) microsoft (dot) com").
> AND cc: cifs-protocol at lists.samba.org :-)
> Thanks for the help Bryan!
> metze
So this time it's the SVHDX_OPEN_DEVICE_CONTEXT that we're not supporting and Win10 backup (and probably Win8.1) are requesting. Should I bring this in an orderly way like Bryan had suggested or is this already a known issue?

(...and sorry for not being entirely accurate - the .vhdx does get created but then opened with this create context that we do not support)


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