[zfs-discuss] Re: Zpool, RaidZ how it spreads its disk load?

2007-05-07 Thread Mario Goebbels
Something I was wondering about myself. What does the raidz toplevel (pseudo?) device do? Does it just indicate to the SPA, or whatever module is responsible, to additionally generate parity? The thing I'd like to know is if variable block sizes, dynamic striping et al still applies to a single

[zfs-discuss] Re: Zpool, RaidZ how it spreads its disk load?

2007-05-07 Thread Mario Goebbels
What are these alignment requirements? I would have thought that at the lowest level, parity stripes would have been allocated traditionally, while treating the remaining usable space like a JBOD the level above, thus not subject to any restraints (apart when getting close to the parity stripe