FreeBSD-10.3 root ZFS redux
James B. Byrne
byrnejb at harte-lyne.ca
Wed May 11 18:13:54 UTC 2016
On Wed, May 11, 2016 13:34, James B. Byrne wrote:
> We have eight (8) 3Tbyte drives on a system upon which I am installing
> FreeBSD. The quest arises of whether one should simply grab all of
> the disks or partition them to reserve a spare area. The reason put
> forth for partitioning is this statement in man zspool(8):
> zpool replace [-f] pool device [new_device]
> Replaces old_device with new_device. This is equivalent
> to attaching new_device, waiting for it to resilver, and
> then detaching old_device.
> The size of new_device must be greater than or equal to
> the minimum size of all the devices in a mirror or raidz
> One can conceive of a 3Tb drive which has slightly more or fewer
> accessible sectors than its nominal size. If the zspool incorporates
> a drive with fewer accessible sectors than average for its nominal
> size and one seeks to replace it with a similar drive that has more
> than average for the same nominal capacity then what is the result?
> Is the new drive accepted or rejected?
I managed to get this reversed in my head as I composed. The question
is what happens when a nominally 3TB HDD is put in that has fewer
accessible sectors than a similar 3TB drive already present?
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