larger disk for a zfs pool

andrew clarke mail at
Mon Aug 1 15:34:54 UTC 2011

On Mon 2011-08-01 16:30:50 UTC+0200, Dick Hoogendijk (dick at wrote:

> 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?

By the way, a similar question appeared on the freebsd-fs list recently:

Although the question was asked with regards to ZFS v28, which may be
newer than what you are using.


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