[ClusterNFS-Devel] RE: improvements to the create tag

[Warnes, G. R <gre...@gr...>]

I think you meant to send this to <clusternfs-devel>.

-Greg

> -----Original Message-----
> From: Bernd Schubert [mailto:ber...@we...]
> Sent: Monday, March 04, 2002 7:03 PM
> To: clu...@li...
> Cc: Warnes, Gregory R
> Subject: improvements to the create tag
> 
> 
> Hi Greg and all the others,
> 
> several weeks ago I complained that even when the CREATE tag 
> is set, the 
> servers files are overwritten from the clients. For example 
> when a file with 
> filename, another with filename$$CREATE=IP$$ exist, but no file with 
> filename$$any_other_tag$$. 
> 
> So here's a small and still incomplete patch (I don't know 
> how to use the 
> diff command to create patch compatible formats -- I'll 
> lookup that tomorrow, 
> or can give someone of a hint to me?).
> 
> Actually, this patch only works properly together with 
> "$$IP=...$$" and 
> "$$CREATE=IP$$" tags but adding the other tags will not be 
> difficult (but its 
> late in the night here and I want to go to bed now).
> 
> Furthermore, you'll get input/output errors when doing for 
> example a ls and a 
> file with "$$CREATE=$$" exists but no file with the same 
> filename and the tag 
> "$$IP=..". But nevertheless the servers files shoulnd't be 
> overwritten any 
> longer.
> I think to prevent the input/output errors the servers 
> filename has to be 
> removed from the filelist when a file with 
> filename$$CREATE=..$$ exists. I 
> think this has to be done in nfsd.c:1121. Unfortunality 
> another loop is 
> necessary to scan files, that have the CREATE tag and then 
> delete this files 
> from the current while loop at nfsd.c:1121. Or has anyone 
> another idea?
> 
> 
> I'm only posting this incomlete patch, to ask if you agree 
> with my code (I'm 
> a C novice and want to make sure that I havn't done any mistakes).
> 
> 
> Thanks in advance for you patience,
> 
> Bernd
> 
> PS: Thanks again Greg for your hint about running it within 
> the debugger, it 
> worked fine.
> 


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