Date: Wed, 11 May 2016 13:34:47 -0400 From: "James B. Byrne" <byrnejb@harte-lyne.ca> To: freebsd-questions@freebsd.org Subject: FreeBSD-10.3 root ZFS Message-ID: <0409d2208ccce8e2f9e0ce6526bf6756.squirrel@webmail.harte-lyne.ca>
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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
configuration.
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?
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James B. Byrne mailto:ByrneJB@Harte-Lyne.ca
Harte & Lyne Limited http://www.harte-lyne.ca
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