On Fri, Jul 02, 2010 at 03:40:26AM -0700, Ben Taylor wrote: > > We have a server with a couple X-25E's and a bunch of > > larger SATA > > disks. > > > > To save space, we want to install Solaris 10 (our > > install is only about > > 1.4GB) to the X-25E's and use the remaining space on > > the SSD's for ZIL > > attached to a zpool created from the SATA drives. > > > > Currently we do this by installing the OS using > > SVM+UFS (to mirror the > > OS between the two SSD's) and then using the > > remaining space on a slice > > as ZIL for the larger SATA-based zpool. > > > > However, SVM+UFS is more annoying to work with as far > > as LiveUpgrade is > > concerned. We'd love to use a ZFS root, but that > > requires that the > > entire SSD be dedicated as an rpool leaving no space > > for ZIL. Or does > > it? > > For every system I have ever done zfs root on, it's always > been a slice on a disk. As an example, we have an x4500 > with 1TB disks. For that root config, we are planning on > something like 150G on s0, and the rest on S3. s0 for > the rpool, and s3 for the qpool. We didn't want to have > to deal with issues around flashing a huge volume, as > we found out with our other x4500 with 500GB disks. > > AFAIK, it's only non-rpool disks that use the "whole disk", > and I doubt there's some sort of specific feature with > an SSD, but I could be wrong. > > I like your idea of a reasonably sized root rpool and the > rest used for the ZIL. But if you're going to do LU, > you should probably take a good look at how much space > you need for the clones and snapshots on the rpool
Interesting. For some reason, I coulda sworn that Sol 10 U8 installer required you to use an entire disk for a ZFS rpool, so using only part of the disk on a slice and leaving space for other uses wasn't an option. I'll revisit this though. Thanks for the reply. Ray _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
