In <e48ba632-d8d5-42af-ae67-17438c201...@gmail.com>, on 02/10/17 at 12:38 PM, Henri Shustak <henri.shus...@gmail.com> said:
>As Ben mentioned, ZFS snapshots is one possible approach. Another >approach is to have a faster storage system. I have seen considerable >speed improvements with rsync on similar data sets by say upgrading the >storage sub system. This is true. In addition different file systems has different performance wrt stat(). A lot depends on what kind of backup that is required. If a full backup that is accurate to a point in time is required, then something like ZFS makes sense. If the system is servers that do in memory cachinng, there will probably be a need to ensure that their on-disk state is consistent before the snapshot is taken. If the only requirment is to ensure that everything known to have changed on disk is backed up, the event based solution will avoid the high cost of stat-ing every file. It might be interesting to evaluate a mixed solution. Use events to track directory changes and let rsync sort out what to do for each directory. Steven -- ---------------------------------------------------------------------- "Steven Levine" <stev...@earthlink.net> Warp/DIY/BlueLion etc. www.scoug.com www.arcanoae.com www.warpcave.com ---------------------------------------------------------------------- -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html