[i]google found that solaris does have file change notification: http://blogs.sun.com/praks/entry/file_events_notification [/i]
Didn't see that one, thanks. [i]Would that do the job?[/i] It is not supposed to do a job, thanks :), it is for a presentation at a conference I will be giving. I was wondering if Solaris offered CDP, Continuous Data Protection, like http://en.wikipedia.org/wiki/Continuous_data_protection To me, "Continuous data protection is different from traditional backup in that you don't have to specify the point in time to which you would like to recover until you are ready to perform a restore. Traditional backups can only restore data to the point at which the backup was taken. With continuous data protection, there are no backup schedules" is a perfect match to the revolutionary design of ZFS; and I am sure the next TimeMachine of Apple will have it. File change notification as system call is not the optimum, probably. The overhead could be pretty high in comparison with the file system (ZFS) itself noticing a change, a 'write', and on own initiative storing the block to be replaced in a 'back-in-time'-queue. TimeMachine is limited, as it allows to roll to specified moments in time only. Multiple changes in between those snapshots will be lost. A StateMachine will allow to roll to any specific state, to each state a file ever had had. Think log files of a RDBMS, without the overhead. Uwe This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
