Messages in this thread | | | Date | Fri, 7 Jul 2006 08:46:15 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: Kernel 2.6.17 and RAID5 Grow Problem (critical section backup) |
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On Fri, 7 Jul 2006, Justin Piszcz wrote:
> p34:~# mdadm /dev/md3 -a /dev/hde1 > mdadm: added /dev/hde1 > > p34:~# mdadm -D /dev/md3 > /dev/md3: > Version : 00.90.03 > Creation Time : Fri Jun 30 09:17:12 2006 > Raid Level : raid5 > Array Size : 1953543680 (1863.04 GiB 2000.43 GB) > Device Size : 390708736 (372.61 GiB 400.09 GB) > Raid Devices : 6 > Total Devices : 7 > Preferred Minor : 3 > Persistence : Superblock is persistent > > Update Time : Fri Jul 7 08:25:44 2006 > State : clean > Active Devices : 6 > Working Devices : 7 > Failed Devices : 0 > Spare Devices : 1 > > Layout : left-symmetric > Chunk Size : 512K > > UUID : e76e403c:7811eb65:73be2f3b:0c2fc2ce > Events : 0.232940 > > Number Major Minor RaidDevice State > 0 22 1 0 active sync /dev/hdc1 > 1 56 1 1 active sync /dev/hdi1 > 2 3 1 2 active sync /dev/hda1 > 3 8 49 3 active sync /dev/sdd1 > 4 88 1 4 active sync /dev/hdm1 > 5 8 33 5 active sync /dev/sdc1 > > 6 33 1 - spare /dev/hde1 > p34:~# mdadm --grow /dev/md3 --raid-disks=7 > mdadm: Need to backup 15360K of critical section.. > mdadm: Cannot set device size/shape for /dev/md3: No space left on device > p34:~# mdadm --grow /dev/md3 --bitmap=internal --raid-disks=7 > mdadm: can change at most one of size, raiddisks, bitmap, and layout > p34:~# umount /dev/md3 > p34:~# mdadm --grow /dev/md3 --raid-disks=7 > mdadm: Need to backup 15360K of critical section.. > mdadm: Cannot set device size/shape for /dev/md3: No space left on device > p34:~# > > The disk only has about 350GB of 1.8TB used, any idea why I get this error? > > I searched google but could not find anything on this issue when trying to > grow the array? > > > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
Is it because I use a 512kb chunksize?
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?
Justin. - 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/
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