Scott Laird wrote: > I'm debating using an external intent log on a new box that I'm about > to start working on, and I have a few questions. > > 1. If I use an external log initially and decide that it was a > mistake, is there a way to move back to the internal log without > rebuilding the entire pool?
It's not currently possible to remove a separate log. This was working once, but was stripped out until the more generic zpool remove devices was provided. This is bug 6574286: http://bugs.opensolaris.org/view_bug.do?bug_id=6574286 > 2. What happens if the logging device fails completely? Does this > damage anything else in the pool, other then potentially losing > in-flight transactions? This should work. It shouldn't even lose the in-flight transactions. ZFS reverts to using the main pool if a slog write fails or the slog fills up. > 3. What about corruption in the log? Is it checksummed like the rest of ZFS? Yes it's checksummed, but the checksumming is a bit different from the pool blocks in the uberblock tree. See also: http://blogs.sun.com/perrin/entry/slog_blog_or_blogging_on > > Thanks. > > > Scott > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
