Yes, this is supported now. Replacing one half of a mirror with a larger device;
letting it resilver; then replacing the other half does indeed get a larger
mirror.
I believe this is described somewhere but I can't remember where now.
Neil.
Richard L. Hamilton wrote On 03/23/07 20:45,:
If I create a mirror, presumably if possible I use two or more identically
sized devices,
since it can only be as large as the smallest. However, if later I want to
replace a disk
with a larger one, and detach the mirror (and anything else on the disk),
replace the
disk (and if applicable repartition it), since it _is_ a larger disk (and/or
the partitions
will likely be larger since they mustn't be smaller, and blocks per cylinder
will likely differ,
and partitions are on cylinder boundaries), once I reattach everything, I'll
now have
two different sized devices in the mirror. So far, the mirror is still the
original size.
But what if I later replace the other disks with ones identical to the first
one I replaced?
With all the devices within the mirror now the larger size, will the mirror and
the zpool
of which it is a part expand? And if that won't happen automatically, can it
(without
inordinate trickery, and online, i.e. without backup and restore) be forced to
do so?
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