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<DIV><SPAN class=169341516-20112009><FONT face=Tahoma color=#0000ff size=2>I
suppose my next question then is - probably to Luca :) - is the
security policy in the Gateway determined by the DRS based URLs?
</FONT></SPAN><SPAN class=169341516-20112009><FONT face=Tahoma color=#0000ff
size=2>For the ESG software stack have you looked at how the DRS structure will
map to the services exposed by the data node or the underlying file
system(s)?</FONT></SPAN></DIV>
<DIV><SPAN class=169341516-20112009><FONT face=Tahoma color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=169341516-20112009><FONT face=Tahoma color=#0000ff
size=2>Cheers,</FONT></SPAN></DIV>
<DIV><SPAN class=169341516-20112009><FONT face=Tahoma color=#0000ff
size=2>Phil</FONT></SPAN></DIV>
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<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> Don Middleton
[mailto:don@ucar.edu] <BR><B>Sent:</B> 20 November 2009 16:12<BR><B>To:</B>
Dean N. Williams<BR><B>Cc:</B> Don Middleton; Kershaw, Philip (STFC,RAL,SSTD);
go-essp-tech@ucar.edu<BR><B>Subject:</B> Re: [Go-essp-tech] DRS hierarchy on
disk<BR><BR></FONT></DIV>We discussed this topic (GridFTP on vfs) a fair bit
several years ago. We didn't end up pursuing it, however, and at this point I
don't recall all the reasons.
<DIV><BR></DIV>
<DIV>don</DIV>
<DIV><BR></DIV>
<DIV><BR>
<DIV>
<DIV>On Nov 20, 2009, at 8:43 AM, Dean N. Williams wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<DIV
style="WORD-WRAP: break-word; webkit-nbsp-mode: space; webkit-line-break: after-white-space">Hi
Phil,
<DIV><BR></DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>This is a
good question. Perhaps Rachana or Frank can look into this and return a
proper answer. My first thought is no, but I am not an expert on
GridFTP.</DIV>
<DIV><BR></DIV>
<DIV>Best regards,</DIV>
<DIV><SPAN class=Apple-tab-span style="WHITE-SPACE: pre"></SPAN>Dean</DIV>
<DIV><BR>
<DIV>
<DIV>On Nov 20, 2009, at 2:28 AM, <<A
href="mailto:philip.kershaw@stfc.ac.uk">philip.kershaw@stfc.ac.uk</A>>
wrote:</DIV><BR class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<DIV
style="WORD-WRAP: break-word; webkit-nbsp-mode: space; webkit-line-break: after-white-space">
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009>This is a problem for something like GridFTP
where you 'see' the file system on the server not the DRS hierarchy.
<SPAN class=522001910-20112009>It's a headache for applying security
policy as presumably this is based on the DRS structure. Some kind
of mapping would need to be maintained.
</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009><SPAN
class=522001910-20112009></SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009><SPAN class=522001910-20112009></SPAN>Is there a
way of altering the GridFTP server side interface so that it could see a
virtual file system structure based on the DRS?</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009>Cheers,</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma color=#0000ff size=2><SPAN
class=522001910-20112009>Phil</SPAN></FONT></DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> <A
href="mailto:go-essp-tech-bounces@ucar.edu">go-essp-tech-bounces@ucar.edu</A>
[<A
href="mailto:go-essp-tech-bounces@ucar.edu">mailto:go-essp-tech-bounces@ucar.edu</A>]
<B>On Behalf Of </B>Dean N. Williams<BR><B>Sent:</B> 19 November 2009
12:14<BR><B>To:</B> Lawrence, Bryan (STFC,RAL,SSTD)<BR><B>Cc:</B> <A
href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</A><BR><B>Subject:</B>
Re: [Go-essp-tech] DRS hierarchy on disk<BR><BR></FONT></DIV>This is a
correct statement.
<DIV><BR></DIV>
<DIV>-Dean</DIV>
<DIV><BR>
<DIV>
<DIV>On Nov 19, 2009, at 4:04 AM, <<A
href="mailto:bryan.lawrence@stfc.ac.uk">bryan.lawrence@stfc.ac.uk</A>>
wrote:</DIV><BR class=Apple-interchange-newline>
<BLOCKQUOTE type="cite"><SPAN class=Apple-style-span
style="WORD-SPACING: 0px; FONT: medium Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate; orphans: 2; widows: 2; webkit-border-horizontal-spacing: 0px; webkit-border-vertical-spacing: 0px; webkit-text-decorations-in-effect: none; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">
<DIV lang=EN-GB link="blue" vlink="navy"><O:SMARTTAGTYPE
namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="City"><O:SMARTTAGTYPE
namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="place">
<DIV class=Section1>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hi
Stephen<O:P></O:P></SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Bob or
someone else can confirm, but I think the issue is that ESG in
general is aiming at supporting more than just the DRS, so while
conforming to DRS is a given for CMIP5, it’s not a given for all the
datasets that ESG may work with.<O:P></O:P></SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><ST1:CITY
w:st="on"><ST1:PLACE w:st="on"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Bryan</SPAN></FONT></ST1:PLACE></ST1:CITY><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></DIV>
<DIV>
<DIV class=MsoNormal
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN lang=EN-US
style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><B><FONT
face=Tahoma size=2><SPAN lang=EN-US
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"><SPAN
class=Apple-converted-space> </SPAN><A
href="mailto:go-essp-tech-bounces@ucar.edu">go-essp-tech-bounces@ucar.edu</A>
[<A style="COLOR: blue; TEXT-DECORATION: underline"
href="mailto:go-essp-tech-bounces@ucar.edu">mailto:go-essp-tech-bounces@ucar.edu</A>]<SPAN
class=Apple-converted-space> </SPAN><B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of<SPAN
class=Apple-converted-space> </SPAN></SPAN></B><A
style="COLOR: blue; TEXT-DECORATION: underline"
href="mailto:stephen.pascoe@stfc.ac.uk">stephen.pascoe@stfc.ac.uk</A><BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B><SPAN
class=Apple-converted-space> </SPAN>19 November 2009
11:49<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B><SPAN
class=Apple-converted-space> </SPAN><A
style="COLOR: blue; TEXT-DECORATION: underline"
href="mailto:drach@llnl.gov">drach@llnl.gov</A><BR><B><SPAN
style="FONT-WEIGHT: bold">Cc:</SPAN></B><SPAN
class=Apple-converted-space> </SPAN><A
style="COLOR: blue; TEXT-DECORATION: underline"
href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</A><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B><SPAN
class=Apple-converted-space> </SPAN>[Go-essp-tech] DRS hierarchy
on disk</SPAN></FONT><SPAN lang=EN-US><O:P></O:P></SPAN></DIV></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">At
the telco this Tuesday I was slightly surprised when someone (I
think Bob) asserted data is not likely to follow the DRS
hierarchy on disk. Although we know the disk layout can be
mapped to DRS URLs in the web server I thought our default position
was that we would lay out the data in the DRS hierarchy because it is
the simplest solution.</SPAN></FONT><O:P></O:P></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">This issue came up in a
meeting with UKMO yesterday where they thought there was a strong
reason for using the DRS on disk so that fallback positions like ftp
follow a consistent structure. I also learnt that CMOR2 will
output to the DRS hierarchy
automatically.</SPAN></FONT><O:P></O:P></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Given this, why wouldn't
we want to insist all datasets are stored on disk in the DRS
hierarchy?</SPAN></FONT><O:P></O:P></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks,</SPAN></FONT><O:P></O:P></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Stephen.</SPAN></FONT><O:P></O:P></DIV></DIV>
<DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></DIV></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">---</SPAN></FONT><O:P></O:P></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Stephen Pascoe +44
(0)1235 445980</SPAN></FONT><O:P></O:P></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">British Atmospheric Data
Centre</SPAN></FONT><O:P></O:P></DIV>
<DIV
style="FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: 'Times New Roman'"><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Rutherford Appleton
Laboratory</SPAN></FONT><O:P></O:P></DIV>
<DIV>
<DIV
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