On Sat, 8 Jul 2006, Neil Brown wrote:
On Friday July 7, [email protected] wrote:
Jul 7 08:44:59 p34 kernel: [4295845.933000] raid5: reshape: not enough
stripes. Needed 512
Jul 7 08:44:59 p34 kernel: [4295845.962000] md: couldn't update array
info. -28
So the RAID5 reshape only works if you use a 128kb or smaller chunk size?
Neil,
Any comments?
Yes. This is something I need to fix in the next mdadm.
You need to tell md/raid5 to increase the size of the stripe cache
before the grow can proceed. You can do this with
echo 600 > /sys/block/md3/md/stripe_cache_size
Then the --grow should work. The next mdadm will do this for you.
NeilBrown
Hey! You're awake :)
I am going to try it with just 64kb to prove to myself it works with that,
but then I will re-create the raid5 again like I had it before and attempt
it again, I did not see that documented anywhere!! Also, how do you use
the --backup-file option? Nobody seems to know!
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