On Tue, Jul 18, 2006 at 10:10:33AM +1000, Nathan Kroenert wrote: > Jeff - > > That sounds like a great idea... > > Another idea might to be have a zpool create announce the 'availability' > of any given configuration, and output the Single points of failure. > > # zpool create mypool a b c > NOTICE: This pool has no redundancy. > Without hardware redundancy (raid1 / 5), > a single disk failure will destroy the whole pool. > > # zpool create mypool raidz a b c > NOTICE: This pool has single disk redundancy. > Without hardware redundancy (raid1 / 5), > this pool can survive at most 1 disks failing. > > # zpool create mypool raidz2 a b c > NOTICE: This pool has double disk redundancy. > Without hardware redundancy (raid1 / 5), > this pool can survive at most 2 disks failing. > > It would be especially nice if it was able to detect silly > configurations too (like adding dimple disks to a raidz or something > like that (if it's even possible) and announce the reduction in > reliability.
FYI, zpool(1M) will already detect some variations of "silly" and force you to use the '-f' option if you really mean it (for add and create). Examples include using vdevs of different redundancy (raidz + mirror), as well as using different size devices. If you have other definitions of silly, let us know what we should be looking for. - Eric -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
