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
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md3 : active raid5 sdc1[7] sde1[6] sdd1[5] hdk1[2] hdi1[4] hde1[3] hdc1[1]
hda1[0]
2344252416 blocks super 0.91 level 5, 512k chunk, algorithm 2 [8/8]
[UUUUUUUU]
[>....................] reshape = 0.2% (1099280/390708736)
finish=1031.7min speed=6293K/sec
It is working, thanks!
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