On Thu, May 6, 2010 at 11:08 AM, Michael Sullivan <michael.p.sulli...@mac.com> wrote: > The round-robin access I am referring to, is the way the L2ARC vdevs appear > to be accessed. So, any given object will be taken from a single device > rather than from several devices simultaneously, thereby increasing the I/O > throughput. So, theoretically, a stripe spread over 4 disks would give 4
I believe that the L2ARC behaves the same as a pool with multiple top-level vdevs. It's not typical striping, where every write goes to all devices. Writes may go to only one device, or may avoid a device entirely while using several other. The decision about where to place data is done at write time, so no fixed width stripes are created at allocation time. In your example, if the file had at least four blocks there is a likelihood that it will be spread across the four top-level vdevs. -B -- Brandon High : bh...@freaks.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
