-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi there,
we had in the past several issues with hour-long outages of our ZEO servers. The reasons are pretty easy: with have several big storages (60-80GB) and in case of a cluster failures we were not able to shutdown the ZEO servers in a clean way. So at startup time the complete index files had to be recreated which takes pretty long for our storages. The question came up if it would be possible to write regular snapshots of the in-memory index back to disk (e.g. every 15 minutes) and then to modify the ZEO startup procedure to optionally start a ZEO server with such a snapshoted index file? This may cause some data loss (transactions between the last snapshot and the crash would be ignored - or perhaps the ZEO server could take the snapshot file and read all transactions happened after the snapshot until the crash in order to update the index with the completed transactions after the snapshot... When I talk of ZEO here then this related almost everything to FileStorage in generell since the zodb index file is a FIleStorage feature. Just some ideas...would that be doable? Andreas - -- ZOPYX Limited \ zopyx group Charlottenstr. 37/1 \ The full-service network for your D-72070 Tübingen \ Python, Zope and Plone projects www.zopyx.com, i...@zopyx.com \ www.zopyxgroup.com - ------------------------------------------------------------------------ E-Publishing, Python, Zope & Plone development, Consulting -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAktpNlcACgkQCJIWIbr9KYwRaACbBcyT/QTWgMhIHL6Viw56rL7e v+sAn3sCqUkBaVy6aT6AF03+VJ2rl6ZF =elE4 -----END PGP SIGNATURE-----
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