Messages in this thread | | | Date | Mon, 10 Jul 2006 17:47:24 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: Kernel 2.6.17 and RAID5 Grow Problem (critical section backup) |
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On Sat, 8 Jul 2006, Neil Brown wrote:
> On Friday July 7, jpiszcz@lucidpixels.com 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 > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > 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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