Raid5 - Replace ALL the Disks

  • Hello Everyone,


    It is my first post here.


    So here is my problem :


    I build a Raid5 with 5x 1To Disk. I want to replace them with 2To Disks. Will my Raid5 automatically resize ?


    I just tested inside a VM but the Size remains the same after all disk was change. (I change the disks one by one and rebuild the Raid between each change)


    Any ideas ?


    Thank you.

  • After all disks are changed, boot gparted live and fix the size.

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  • Did you grow the array? Run mdadm --grow /dev/md127 --size=max from command line and then increase the filesystem size. You can do the grow command in gparted live as well.

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  • OMV should have this option in the WebUI.


    It kind of does. When you add a disk to the array by using the grow button, it does the grow. When you replace disks instead of add, it doesn't do that.

    omv 5.6.4 usul | 64 bit | 5.11 proxmox kernel | omvextrasorg 5.6
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  • Zitat von xander3690: „OMV should have this option in the WebUI.“
    It kind of does. When you add a disk to the array by using the grow button, it does the grow. When you replace disks instead of add, it doesn't do that.


    Can I replace my 4x4TB drives one by one with 6TB ones (replace, resync, replace, resync ...) and afterwards use the Grow Button?

  • Why would you do that?


    Resyncing would chew up much time for each replacement, not even to mention the risk of dooing this.


    Greetings
    David

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