lost raid5 after upgrade

  • Hello,
    I lost my raid 5 after upgrade from 3x 3TB WD RED to 4x 3TB WD RED.


    What can I do ?


    thanks


    Code
    root@homeserver:~# cat /proc/mdstat
    Personalities :
    unused devices: <none>





    Code
    root@homeserver:~# blkid
    /dev/sda1: UUID="ae3814b4-8d73-42ba-9753-147b8bde8b51" TYPE="ext4" PARTUUID="021fa056-01"
    /dev/sda5: UUID="dd9e6b44-2cf2-449b-8d73-4f22c1cd42ef" TYPE="swap" PARTUUID="021fa056-05"
    /dev/sdc: UUID="2ea7d2ce-18e9-a774-0cd3-1ec1faec10e6" UUID_SUB="340e5ad9-9a84-fc29-586b-556426b5213e" LABEL="homeserver:home" TYPE="linux_raid_member"
    /dev/sdb: UUID="2ea7d2ce-18e9-a774-0cd3-1ec1faec10e6" UUID_SUB="86dd334c-7935-a967-076b-498f71bcb020" LABEL="homeserver:home" TYPE="linux_raid_member"
    /dev/sdd: UUID="2ea7d2ce-18e9-a774-0cd3-1ec1faec10e6" UUID_SUB="85df4f7f-2767-277e-1973-ed632390a732" LABEL="homeserver:home" TYPE="linux_raid_member"
    /dev/sde: UUID="2ea7d2ce-18e9-a774-0cd3-1ec1faec10e6" UUID_SUB="15ffcf7f-6dae-d734-ceb2-bb5a6efd1250" LABEL="homeserver:home" TYPE="linux_raid_member"
    root@homeserver:~#
    Code
    root@homeserver:~# mdadm --detail --scan --verbose
    root@homeserver:~#
  • root@homeserver:~# mdadm --assemble /dev/md0 /dev/sdb /dev/sdc /dev/sdd /dev/sde --force
    mdadm: Failed to restore critical section for reshape, sorry.
    Possibly you needed to specify the --backup-file
    root@homeserver:~#


    he wanted always the backup file

  • here is the data






  • Use the --force flag when re-asssembling.

    omv 5.6.9 usul | 64 bit | 5.11 proxmox kernel | omvextrasorg 5.6.2 | kvm plugin 5.1.5
    omv-extras.org plugins source code and issue tracker - github


    Please read this before posting a question.
    Please don't PM for support... Too many PMs!

  • Nevermind. I didn't see the force flag at the end of the command.

    omv 5.6.9 usul | 64 bit | 5.11 proxmox kernel | omvextrasorg 5.6.2 | kvm plugin 5.1.5
    omv-extras.org plugins source code and issue tracker - github


    Please read this before posting a question.
    Please don't PM for support... Too many PMs!

  • any ideas ???


    Code
    root@homeserver:~# cat /proc/mdstat
    Personalities : [raid6] [raid5] [raid4]
    unused devices: <none>
    root@homeserver:~

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