Thanks a lot for your pointers! So the code contains both VOL and core HDF5, right?
Also, I cannot find the code for the Metadata Server plugin you describe in the RFC. Is it included in the distribution? Thanks, Dimos On Tue, Sep 15, 2015 at 1:00 PM, <[email protected]> wrote: > Send Hdf-forum mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Hdf-forum digest..." > > > Today's Topics: > > 1. Re: Hdf-forum Digest, Vol 75, Issue 15 - creating a custom > VOL driver for HDF5 (Mohamad Chaarawi) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 15 Sep 2015 13:45:30 +0000 > From: Mohamad Chaarawi <[email protected]> > To: HDF Users Discussion List <[email protected]> > Subject: Re: [Hdf-forum] Hdf-forum Digest, Vol 75, Issue 15 - creating > a custom VOL driver for HDF5 > Message-ID: > < > by2pr0701mb1957117bd36bdb700b019864bd...@by2pr0701mb1957.namprd07.prod.outlook.com > > > > Content-Type: text/plain; charset="utf-8" > > Here are the more ?detailed? docs for creating a VOL (look for the pdf > under each link): > > code: > http://svn.hdfgroup.uiuc.edu/hdf5/features/vol > RFC/High Level Architecture Design: > http://svn.hdfgroup.uiuc.edu/hdf5doc/trunk/RFCs/HDF5/VOL/RFC/ > Developers Guide / Low Level Architecture Design: > http://svn.hdfgroup.uiuc.edu/hdf5doc/trunk/RFCs/HDF5/VOL/developer_guide/ > Users Guide / RM: > http://svn.hdfgroup.uiuc.edu/hdf5doc/trunk/RFCs/HDF5/VOL/user_guide/ > > > Thanks, > Mohamad > > From: Hdf-forum [mailto:[email protected]] On Behalf > Of Dimos Stamatakis > Sent: Tuesday, September 15, 2015 12:26 AM > To: [email protected] > Subject: Re: [Hdf-forum] Hdf-forum Digest, Vol 75, Issue 15 - creating a > custom VOL driver for HDF5 > > Hi John, > > thanks for your response! > > I think creating a custom VOL would better match our needs, since we have > to support on-demand snapshot creation. > > So, creating a custom VOL means creating a custom VOL plugin, as described > here? > > https://fossies.org/linux/misc/hdf5-1.9.229_docs.tar.gz/hdf5-1.9.229_docs/RFCs/HDF5/VOL/2012-05-25-RFC_VOL.docx > > Is there a guide for building a custom VOL plugin, something equivalent to > the one for building custom VFL? > https://www.hdfgroup.org/HDF5/doc/TechNotes/VFL.html#SEC7 > > > Thanks, > > Dimos > > > > On Mon, Sep 14, 2015 at 1:00 PM, <[email protected] > <mailto:[email protected]>> wrote: > Send Hdf-forum mailing list submissions to > [email protected]<mailto:[email protected]> > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > > or, via email, send a message with subject or body 'help' to > [email protected]<mailto: > [email protected]> > > You can reach the person managing the list at > [email protected]<mailto: > [email protected]> > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Hdf-forum digest..." > > > Today's Topics: > > 1. Re: creating a custom VOL driver for HDF5 (John Readey) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 14 Sep 2015 14:27:00 +0000 > From: John Readey <[email protected]<mailto:[email protected]>> > To: HDF Users Discussion List <[email protected]<mailto: > [email protected]>> > Subject: Re: [Hdf-forum] creating a custom VOL driver for HDF5 > Message-ID: <[email protected]<mailto: > [email protected]>> > Content-Type: text/plain; charset="utf-8" > > Hi Dimos, > To enabling writing of HDF5 metadata to Berkelely DB, I'd think VOL wold > be the way to go. You can find instructions on creating a VOL here: > http://hdf-forum.184993.n3.nabble.com/How-can-I-start-a-plugin-for-quot-Virtual-Object-Layer-quot-td4025766.html > . > > Note that the VOL is not part of the standard HDF5 release, and as it > stands now, is not planned for the 1.10 release. > > Alternatively, could you have a a background process that reads the HDF5 > file and copies meta data to the BDB? > > Cheers, > John > > From: Hdf-forum on behalf of Dimos Stamatakis > Reply-To: HDF Users Discussion List > Date: Wednesday, September 9, 2015 at 3:41 PM > To: "[email protected]<mailto:[email protected] > ><mailto:[email protected]<mailto:[email protected] > >>" > Subject: [Hdf-forum] creating a custom VOL driver for HDF5 > > Hi all, > > I am working in a research project at Brandeis University which aims to > provide snapshot support in the HDF5 file system. The idea is to use > Berkeley DB with snapshot support to store the HDF5 metadata. I was > wondering what is the more efficient and modular way to do it, instead of > modifying the core code of HDF5. Is there a way to replace the standard VOL > (or VFL) responsible for writing the data and metadata on disk with a new > VOL which will not write the metadata in regular format, but send it to > Berkeley DB instead? > > Thanks a lot in advance, > > Dimos > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.hdfgroup.org/pipermail/hdf-forum_lists.hdfgroup.org/attachments/20150914/daa123a0/attachment-0001.html > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected]<mailto:[email protected]> > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > > > ------------------------------ > > End of Hdf-forum Digest, Vol 75, Issue 15 > ***************************************** > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.hdfgroup.org/pipermail/hdf-forum_lists.hdfgroup.org/attachments/20150915/1dccbdb6/attachment-0001.html > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Hdf-forum is for HDF software users discussion. > [email protected] > http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org > > > ------------------------------ > > End of Hdf-forum Digest, Vol 75, Issue 17 > ***************************************** >
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