larger disk for a zfs pool

Dan Nelson dnelson at
Mon Aug 1 14:38:01 UTC 2011

In the last episode (Aug 01), Dick Hoogendijk said:
> OK, my freebsd system runs on ZFS boot. W/ solaris getting larger disks 
> for a pool was quit easy. Simply replace one disk from a mirror for a 
> larger one, wait for the resilvering and after this replace the second 
> one for a larger disk and wait for the resilvering again. That's it. 
> Been there, done that. But my feeling tells me it is not that simple for 
> a FreeBSD zfs root system, or is it?

Should be the same procedure.  Make sure you either use "zpool online -e"
when swapping in the new disks, or that you have the zpool autoexpand=on
attribute set.

	Dan Nelson
	dnelson at

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