On Thu, 7 Aug 2008, Miles Nordin wrote: I must apologize that I was not able to read your complete email due to local buffer overflow ...
> someone who knows ZFS well like Pavel. Also, there is enough concern > for people designing paranoid systems to approach them with the view, > ``ZFS is not always-consistent-on-disk unless it has working > redundancy''---choosing to build a ZFS system the same way as a UFS > system without ZFS-level redundancy, based on our experience so far, > is not just foregoing some of ZFS's whizz-bang new feeechurs. It's > significantly less safe than the UFS system. For as long as the > argument remains unsettled, conservative people need to understand > that. Conservative people should also understand point (c) below. I don't think that non-redundant ZFS can be classified as "significantly less safe than the UFS system". It seems that the world has little experience with 48TB single-LUN UFS filesystems, if indeed that is even possible. I would hate to wait for fsck of 48TB since some of the disks might wear out and need to be replaced before it completes. According to your logic, AIDS was safer before people were routinely tested (http://en.wikipedia.org/wiki/AIDS#HIV_test) to see if they were HIV positive. With ZFS you may learn that you have contracted AIDs within minutes of the event while with UFS you might not know until your immune system is beyond salvaging and the family is crying at your bed. Apparently you are in the "prefer not to know" group. The largest UFS filesystems I have here are under 120GB and even at that size they make me uneasy since I know that the data can silently fail (bad), or be read incorrectly (worse) and that if fsck is needed, it might take hours. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
