Hi, Thanks for the reply. So the problem of sequential read after random write problem exist in zfs. I wonder if it is a real problem, ie, for example cause longer backup time, will it be addressed in future?
So I should ask anther question: is zfs suitable for an environment that has lots of data changes? I think for random I/O, there will be no such performance penalty, but if you backup a zfs dataset, must the backup utility sequentially read blocks of a dataset? Will zfs dataset suitable for database temporary tablespace or online redo logs? Will a defrag utility be implemented? Regards Victor -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
