tester writes: > Hi, > > quoting from zfs docs > > "The SPA allocates blocks in a round-robin fashion from the top-level > vdevs. A storage pool with multiple top-level vdevs allows the SPA to > use dynamic striping to increase disk bandwidth. Since a new block may > be allocated from any of the top-level vdevs, the SPA implements > dynamic striping by spreading out writes across all available > top-level vdevs" > > > Now, if I need two filesystems, /protect (mirrored - 2physical) and > /fast_unprot (striped - 3physical), is it correct that we end up with > 2 top-level vedvs. If that is the case then from the above paragraph > does it mean that blocks for either filesystem blocks can end up in > any of the 5 physicals. What happens to the intended protection and > performance? I am sure, I am missing some basics here. >
you probably end up with 2 pools, 1 mirrored vdev, and 1 stripe of 3 vdevs. -r > Thanks for the clarification > > > This message posted from opensolaris.org > _______________________________________________ > 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
