On Tue, Aug 11, 2009 at 11:04 PM, Richard Elling<richard.ell...@gmail.com> wrote: > On Aug 11, 2009, at 7:39 AM, Ed Spencer wrote: > >> I suspect that if we 'rsync' one of these filesystems to a second >> server/pool that we would also see a performance increase equal to what >> we see on the development server. (I don't know how zfs send a receive >> work so I don't know if it would address this "Filesystem Entropy" or >> specifically reorganize the files and directories). However, when we >> created a testfs filesystem in the zfs pool on the production server, >> and copied data to it, we saw the same performance as the other >> filesystems, in the same pool. > > Directory walkers, like NetBackup or rsync, will not scale well as > the number of files increases. It doesn't matter what file system you > use, the scalability will look more-or-less similar. For millions of files, > ZFS send/receive works much better. More details are in my paper.
It would be nice if ZFS had something similar to VxFS File Change Log. This feature is very useful for incremental backups and other directory walkers, providing they support FCL. Damjan _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
