Re: grub-setup on ZFS (Re: [PATCH] Enable `grub-probe -t device' resolution on ZFS)

[Seth Goldberg]

> Sorry, it would work.  I just didn't think of this possibility because I find it
> confusing.

 Why is it confusing?  If one has a set of disks that compose a root pool, all 
of those disks should be bootable.

> In a mirrored setup, grub-setup does what user expects (copiing core.img
> to each disk).  In a non-mirrored array, user could think grub-setup will do
> the analogous (interleaving core.img), but this wouldn't work, so what
> you propose is to do something different which would work but is probably
> not what user expects.

  I wouldn't think that interleaving core.img is the right thing to do -- 
even if there's a firmware implementation of zfs that can read from the 
device, for redundancy, core.img should be written to each disk.

> Not that this matters a lot (in the end user can boot), but I can't see any
> advantage in providing two ways to do the same thing, specially when it
> isn't obvious they are equivalent.

  What is the alternative?  core.img would need to be installed on each disk 
in turn in both cases.

 --S