Hi Vincent, I've written a storage utility that may be of help here:
https://wiki.duraspace.org/display/~cwilper/A+New+Fedora+Storage+Utility One of the filters that's included allows you to re-compute the SIZE *and* checksum info for managed datastreams. I was actually talking with Ben Armintor recently about this recently and have copy-pasted my message below: One of out-of-box the filters I wrote for it, 'SetFixity' is very similar to the need expressed by FCREPO-724. After pointing it to your storage via spring (see config/config.properties), the following example will iterate through all objects in your akubra-fs-based store and set the SIZE and DIGEST info for all datastreams where they're not already set: ./fcsu modify akubra --filter=set-fixity It can also be used with "legacy" (pre-akubra-based) low level storage. I never defined a filter that ONLY does size, though. That would require creating a new class similar to this: https://github.com/cwilper/fcrepo-store/blob/master/fcrepo-store-util/src/main/java/com/github/cwilper/fcrepo/store/util/filters/ds/SetFixity.java ..then adding a new 'filter' bean file similar to this: https://github.com/cwilper/fcrepo-store/blob/master/fcrepo-store-util/src/main/conf/filters/set-fixity.xml ...but naming it something different, like 'set-size' and omitting the digest-oriented bits, of course. If you're interested in going down this road and have any questions or problems (or code to contribute!), let me know. Thanks, Chris On Tue, Jul 10, 2012 at 9:16 AM, Nguyen, Vincent (CDC/OD/OADS) (CTR) <v...@cdc.gov> wrote: > HI, > > > > We’re considering upgrading from Fedora 3.2 to 3.4.2 to take advantage of > the SIZE attribute fix in 3.4.2. However, we’ll need a utility to rebuild > existing Datastreams (M) to take advantage of this. Any idea when this work > will be completed? > > > > We may have to start working on this tool for our current project. In which > case we can contribute any work done back to the community if needed. > > > > Any advice on how to go about this? Is this the best way? > > > > - Iterate through every object > > - Download the datastream temporarily > > - Purge the datastream > > - Add the datastream back > > > > https://jira.duraspace.org/browse/FCREPO-724 > > > > Vincent Vu Nguyen ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Fedora-commons-developers mailing list Fedora-commons-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-developers
