On Sep 25, 2007, at 19:57, Bryan Cantrill wrote: > > On Tue, Sep 25, 2007 at 04:47:48PM -0700, Vincent Fox wrote: >> It seems like ZIL is a separate issue. > > It is very much the issue: the seperate log device work was done > exactly > to make better use of this kind of non-volatile memory. To use > this, setup > one LUN that has all of the NVRAM on the array dedicated to it, and > then > use that device as a separate log device. Works like a champ... >
on the 3310/3510 you can't really do this in the same way that you can't create a zfs filesystem or zvol and disable the ARC for this .. i mean we can dance around the issue and create a really big log device on a 3310/3510 and use JBOD for the data, but i don't think that's the point - the bottom line is that there's 2 competing cache strategies that aren't very complimentary. --- .je _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
