Re: GEOM's RAID level support
Pawel Jakub Dawidek <pjd <at> FreeBSD.org>
2005-10-06 20:40:36 GMT
On Thu, Oct 06, 2005 at 01:27:00PM -0700, Danny Howard wrote:
+> On Thu, Oct 06, 2005 at 10:16:16PM +0200, Pawel Jakub Dawidek wrote:
+> > On Thu, Oct 06, 2005 at 01:08:02PM -0700, Danny Howard wrote:
+> > +> Has anyone a recipe for a RAID1,0 bootstrap? :)
+> > Forget it. Everything which splits the data across disks will not work.
+> > With software RAID you can operate on disks, slices, partitions, etc.
+> > no limits here. I'd suggest creating small RAID1 on top of small
+> > partitions for the root file system (or at least for /boot/ directory,
+> > which is minimum).
+> Well, I have RAID1 systems ...
+> It seems reasonable to conclude that one could set up / as a RAID1 on
+> the first pair of disks, and bootstrap far enough to include swap, /var,
+> and /usr from a RAID10 stretched across a full-disk set. It just sounds
+> somewhat tricky to set it all up, is all, so if someone has grokked out
+> a recipe ... :)
This is one of mine setups (5 SATA disks):
beast:root:~# df -h -t ufs
Filesystem Size Used Avail Capacity Mounted on
/dev/mirror/root 1.9G 228M 1.6G 13% /
/dev/raid3/usr 3.9G 1.9G 1.7G 53% /usr
/dev/raid3/data 570G 99G 425G 19% /usr/home
beast:root:~# graid3 status
Name Status Components