Fwd: SMB2 not respecting mtime values

[Ralph Böhme]

On Thu, Jan 24, 2019 at 12:24:53PM -0500, Jacob Shivers wrote:
>On Thu, Jan 24, 2019 at 12:11 PM Ralph Böhme via samba-technical
><samba-technical at lists.samba.org> wrote:
>>
>> On Thu, Jan 24, 2019 at 09:03:41AM -0800, Jeremy Allison via samba-technical wrote:
>> >Maybe. Changing meta-data semantics on write is fraught with danger,
>> >and we don't even do that for SMB1 unix extensions. So let's not
>> >add contraints we don't understand yet please.
>> >
>> >My money is on a client bug, as always :-).
>>
>> fwiw, just in case you were not aware of this one:
>>
>> https://bugzilla.samba.org/show_bug.cgi?id=13594
>>
>> We also seem to have a bug that a set-eof on a handle with
>> set-eof-size=existing-size doesn't flush a pending write time update. At least
>> newer Windows server seem to do that.
>
>This seems like what the issue is.
>The SMB server is uptime mtime after the server actually flushes to
>stable storage.

not quite, but still a client bug. :) The client uses a second handle to set the 
mtime, it should use the first handle. Or open the second handle after closing 
the first one where it did the write.

-slow

-- 
Ralph Boehme, Samba Team                https://samba.org/
Samba Developer, SerNet GmbH   https://sernet.de/en/samba/
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