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md0: raid array is not clean...
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  1. #1
    manulesurfeur Guest

    md0: raid array is not clean...

    Hi;

    I have finally success in installing Fedora Core with 4 sata hd :
    - 2*250Go : md0 (raid 1) with /boot and / mounting points
    - 2*300Go : md1 (raid 1) with swap and /backup mounting points

    First question : is this configuration of partitions is good?

    Second question :
    But when the fedora start I have theese messages :
    md0: raid array is not clean -- starting background reconstruction
    md1: raid array is not clean -- starting background reconstruction
    And fedora boot normally.
    On all restart I have theese message.

    Is it normal? (I'm a newby on software raid whith sata hd)

    Thanks

  2. #2
    manulesurfeur Guest
    Some precisions :
    I want that the firts raid volume (md0) contains the system and home directory and so can be bootable.
    The second raid volume (md1) is for an incremential backup.
    I have tried to use LVM for future evolutions of storage space, but I have not succeded.
    Can you help me for the schema of partitions too (/ /boot /swap etc...)?
    Thanks

  3. #3
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    regarding the "not clean" messages, it may be that the disks just need to synch up. give them time. with large drives could take awhile.

    check /proc/mdstat for status.

  4. #4
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    Quote Originally Posted by manulesurfeur
    Hi;

    I have finally success in installing Fedora Core with 4 sata hd :
    - 2*250Go : md0 (raid 1) with /boot and / mounting points
    - 2*300Go : md1 (raid 1) with swap and /backup mounting points

    First question : is this configuration of partitions is good?
    I would at least have added a separate /home partition. That way, you can keep personal data and files the next time you need to "upgrade" Fedora Core, which is best done with a clean install instead of an actual upgrade.
    Second question :
    But when the fedora start I have theese messages :
    md0: raid array is not clean -- starting background reconstruction
    md1: raid array is not clean -- starting background reconstruction
    And fedora boot normally.
    On all restart I have theese message.

    Is it normal? (I'm a newby on software raid whith sata hd)
    This is normal after an installation - the RAID1 volumes need to be synchronised across the two hard disks. Just keep your computer running a while and that will sort itself out. Eventually, you should not see those messages on a reboot.

  5. #5
    manulesurfeur Guest
    Ok,
    I have checked /proc/mdstat.
    The process of sync is not finished so it's still running.
    Thanks a lot for theese explanations Ivanek and jowah!
    Emmanuel

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