Re: [Dspace-tech] Submitting to Dspace by reference
Thanks Helix (Ivan), I've run the checksum checker and studied the output when a file is manually changed in the assetstore. It seems that it flags the change but does nothing else. That's what I wanted to know. Best regards Ian Ian Wellaway Senior System Support Development Officer - Academic Systems (Room 911) Wednesdays only Technical Developer, Open Exeter - Infrastructure Systems (Room 54) Monday - Tuesday, Thursday - Friday Exeter IT Laver Building University of Exeter EX4 4QE UK tel +44 1392 722852 -Original Message- From: ivan.ma...@gmail.com [mailto:ivan.ma...@gmail.com] On Behalf Of helix84 Sent: 15 June 2012 11:52 To: Wellaway, Ian Cc: dspace-tech@lists.sourceforge.net Subject: Re: [Dspace-tech] Submitting to Dspace by reference On Fri, Jun 15, 2012 at 12:39 PM, Wellaway, Ian i.j.wella...@exeter.ac.uk wrote: Does anyone know that if you submit to DSpace by reference, and subsequently change the file (overwrite it with another for instance) after the item has been entered into the archive, does this produce an error? We tried it and it seems OK but we’re worried that DSpace may notice that the checksum doesn’t match the file contents at some later point or after some sort of integrity check. Hi Ian, I believe by submit to DSpace by reference you mean registering bitstreams (https://wiki.duraspace.org/display/DSDOC18/Registering+(not+Importing)+Bitstreams+via+Simple+Archive+Format). I haven't used it in production, but I played around with it. Someone correct me if I'm wrong, but I don't think that checksums are used for anything else other than the checksum checker (https://wiki.duraspace.org/display/DSDOC18/Validating+CheckSums+of+Bitstreams). This is also how you can get a list of these changed files. In any case, if your file chages, you should deregister it (--delete) and register it again. You may also look at --replace, it might do the same. Regards, ~~helix84 -- 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/ ___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
[Dspace-tech] Submitting to Dspace by reference
Hi, Does anyone know that if you submit to DSpace by reference, and subsequently change the file (overwrite it with another for instance) after the item has been entered into the archive, does this produce an error? We tried it and it seems OK but we're worried that DSpace may notice that the checksum doesn't match the file contents at some later point or after some sort of integrity check. Any help would be gratefully received. Cheers Ian Ian Wellaway Senior System Support Development Officer - Academic Systems (Room 911) Wednesdays only Technical Developer, Open Exeter - Infrastructure Systems (Room 54) Monday - Tuesday, Thursday - Friday Exeter IT Laver Building University of Exeter EX4 4QE UK tel +44 1392 722852 -- 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/___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
Re: [Dspace-tech] Submitting to Dspace by reference
On Fri, Jun 15, 2012 at 12:39 PM, Wellaway, Ian i.j.wella...@exeter.ac.uk wrote: Does anyone know that if you submit to DSpace by reference, and subsequently change the file (overwrite it with another for instance) after the item has been entered into the archive, does this produce an error? We tried it and it seems OK but we’re worried that DSpace may notice that the checksum doesn’t match the file contents at some later point or after some sort of integrity check. Hi Ian, I believe by submit to DSpace by reference you mean registering bitstreams (https://wiki.duraspace.org/display/DSDOC18/Registering+(not+Importing)+Bitstreams+via+Simple+Archive+Format). I haven't used it in production, but I played around with it. Someone correct me if I'm wrong, but I don't think that checksums are used for anything else other than the checksum checker (https://wiki.duraspace.org/display/DSDOC18/Validating+CheckSums+of+Bitstreams). This is also how you can get a list of these changed files. In any case, if your file chages, you should deregister it (--delete) and register it again. You may also look at --replace, it might do the same. Regards, ~~helix84 -- 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/ ___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
