[Samba] libsmbclient question

[Szilard Matyas]

Hi Jeremy,

It's now clear. We'll do a short term workaround somehow. I created the bug.
https://bugzilla.samba.org/show_bug.cgi?id=11295

Thanks for the useful reply.

Kind regards,
Szilard

2015-05-28 2:27 GMT+02:00 Jeremy Allison <jra at samba.org>:

> On Wed, May 27, 2015 at 11:16:08PM +0200, Szilard Matyas wrote:
> > Dear Gents,
> >
> > We are using libsmbclient smbc_getFunctionRead to read from a Microsoft
> DFS
> > share. Before each 64k read there are a QUERY_PATH_INFO and a
> > GET_DFS_REFERRAL which slow down the transmission. Is there a way to
> query
> > these only once at the beginning of the transmission and cache it?
>
> Hmmm. This seems to be done inside :
>
> SMBC_read_ctx(SMBCCTX *context,
>               SMBCFILE *file,
>               void *buf,
>               size_t count)
>
> where it's doing:
>
>         status = cli_resolve_path(frame, "", context->internal->auth_info,
>                                   file->srv->cli, path,
>                                   &targetcli, &targetpath);
>
> before each call to cli_read(), which does seem rather
> excessive.
>
> I'm guessing it's to allow a DFS server to go down mid-read,
> and allow a replica to take over.... Let me think about this
> some more.
>
> You might want to log this as a bug to make it easier to
> track.
>
> Thanks,
>
>         Jeremy.
>