lkml.org 
[lkml]   [2006]   [Jul]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Kernel 2.6.17 and RAID5 Grow Problem (critical section backup)
    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/

    \
     
     \ /
      Last update: 2006-07-07 14:49    [W:0.025 / U:30.632 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site