> > *if* you already have the root filesystem under SVM in the first place,
> > then no reboot should be required to add a mirror. And I assume that's
> > all we're talking about for the ZFS mirroring as well.
> Is there any reason you'd have SVM on just the one partition? I can
> see why you'd
> do that with ZFS (snapshot, compression, etc).
Exactly the reason discussed. It allows later mirroring without
requiring an unmount. For filesystems other than root and /usr, you
could also expand as long as free space is available. Most sites tend
to put all or none of the OS filesystems under SVM.
I doubt that the practice is very common, but I've been to at least one
place that did setup of SDS/SVM on all root disks, even if there was
only one disk in the machine.
My point was only that the usual issue with mirroring root is that it
cannot be umounted, so the existing mount device is fixed until reboot.
That issue is similar for all SVM, VxVM, and ZFS. As long as the mount
device is already a VM object, adding the mirror should be trivial.
Darren Dunham ddunham@xxxxxxxx
Senior Technical Consultant TAOS http://www.taos.com/
Got some Dr Pepper? San Francisco, CA bay area
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