-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Recommendation seconded! Journaling is supported in Fedora for this exact purpose. To your original question-- yes, as far as I know you are going to have to write fresh code to make the rebuilder do what you want it to do. But as Aaron says, I would use the journaling functionality first.
- --- A. Soroka Software & Systems Engineering :: Online Library Environment the University of Virginia Library On Jun 20, 2012, at 7:05 AM, Aaron Birkland wrote: > >> So, we are currently pallning to go for rsync (includingresourceIndex) >> + DB export on leader/DB import on DR, to get the DR up-to-date. >> >> Does this make sense ? >> What's your opinion about the whole architecture ? >> Ideas/comments/suggestions/criticisms welcomed... > > Back when I was with the NSDL, we found journaling to be much easier: > https://wiki.duraspace.org/display/FEDORA35/Journaling > > Some problems with Rsync and database dumps: > - resourceIndex file might be corrupt if a write occurs during transfer, > or if all data hasn't yet been sync'd to disk > - Database and filesystem objects can theoretically be out of sync if a > write occurs during either db dump or file rsync > > Journaling has some advantages: > - Follower is only slightly behind leader > - Journal files are written and queued even if follower is slow or > turned off > - Follower can be taken offline at any time for safe snapshot backup in > a guaranteed consistent state. > -- Follower will simply "catch up" when turned back on > - Journal files (if kept around for a period of time) are very helpful > for disaster recovery or investigation of problems, as they contain all > data for an ingest or modify. > > We used RMI transport, with listener daemons on each follower, which > would write journal files to a directory that is readable by the > follower Fedora instance. > > -Aaron > > > > > ------------------------------------------------------------------------------ > 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-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/fedora-commons-users -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org iQEcBAEBAgAGBQJP4bI6AAoJEATpPYSyaoIknEQIAK/WEOLLFUeIkO1NmCorc3c/ e/wyEMIgDBYVvO/EDek/iXoPOarmmtOnsdJhacwbvIJ8YgOOPoHS248lSjXIuIz0 s5VbdcSvryuwM4TCWFo70RhndL7Bn69WcROhmi2cwOyd1PlRizo2BbUEWzagHaWb GX5Hkq4aNEHGHFhvK41T2PRboYdRYIEGDTaFG+91padCQPLr+TXmu2z1DUNzroH4 O1kQm1Awx8a7kF9AL1qlLxvt48kSifuHN2/zrNtVe2UMbXLp03siWAMKHujFRq8b UziyagFq8kM3Vk64Nk2svQPqnuzixu031jJrAzK2wU5YQ6ebl8nJZsiHsLIMA6M= =WVKQ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ 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-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
