Neil Brown wrote:
On Thursday February 15, davidsen@xxxxxxx wrote:
I have determined that a large array was created with an overly-large
chunk size. Best way to resize?
Dump and restore.
in-place reshapes (such as raid5 + 1 disk => raid6 or
change-chunk-size) are on my list of 'that might be interesting to
implement', but there are plenty of more interesting things. And it
would be very slow. It would need to copy some number of stripes to a
backup somewhere, then copy them back in the new layout, so every
block in the array would be written twice.
I'm sure "slow" is a relative term, compared to backing up TBs of data
and trying to restore them. Not to mention the lack of inexpensive TB
size backup media. That's totally unavailable at the moment, I'll live
with what I have, thanks.
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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