Cannot mound raid after reinstall

    Here is the output

    • Offizieller Beitrag

    mdadm --examine /dev/md127

    mdadm --examine /dev/sdb

    mdadm --examine /dev/sdc

    mdadm --examine /dev/sdd


    EDIT: you are currently in deep doo-doo whilst I commend you for trying to sort this out yourself as per your first post, your actions may result in complete data loss, hence my sig. I can therefore safely assume you do not have a backup :) first failing of home users

    mdadm --examine /dev/md127

    Code
    mdadm: No md superblock detected on /dev/md127.

    mdadm --examine /dev/sdb


    mdadm --examine /dev/sdc


    mdadm --examine /dev/sdd

    Zitat von geaves

    EDIT: you are currently in deep doo-doo whilst I commend you for trying to sort this out yourself as per your first post, your actions may result in complete data loss, hence my sig. I can therefore safely assume you do not have a backup :) first failing of home users

    Actually the most I wanted to get back was photos and videos but most of them are also saved with google photos and/or amazon photos so I kind of have a backup, just not for all the rest which is less critical. It is just sad if I lose some photos that for some reason are not in google photos or amazon. :)

    But if I can recover the RAID and backup everything then it will be more confortable for me to know that I get back everything I had, that's why I really want to try everything to make it ;)

    • Offizieller Beitrag

    OK, just got back in from shopping, need refreshment and confirm an idea, as the output from the three drives appears to be ok.


    BTW if we try this it's referred to as 'sh!t or bust' :) the drives are fine (or they appear to be) the raid itself is f*ed

    Haha no worries, as I told you my main concerned is about photos that are on it but most of them are still on Google/Amazon storage except some when I forgot to get the app on my phone but well that's my fault ^^

    Also Nextcloud did some sync with 1 or 2 computer for some other files now that I'm thinking about it :)

    • Offizieller Beitrag

    OK I had to find a thread I replied to,


    mdadm --stop /dev/md127 wait for the confirmation that it has stopped before proceeding


    mdadm --create --assume-clean --level=5 --raid-devices=3 /dev/md0 /dev/sdb /dev/sdc /dev/sdd if this works then run


    cat /proc/mdstat

    mdadm --stop /dev/md127

    Code
    mdadm: stopped /dev/md127


    mdadm --create --assume-clean --level=5 --raid-devices=3 /dev/md0 /dev/sdb /dev/sdc /dev/sdd

    Code
    mdadm: /dev/sdb appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020
mdadm: /dev/sdc appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020
mdadm: /dev/sdd appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020


    cat /proc/mdstat

    Code
    Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
unused devices: <none>

    I repeated it and now it made something :


    mdadm --create --assume-clean --level=5 --raid-devices=3 /dev/md0 /dev/sdb /dev/sdc /dev/sdd

    Code
    mdadm: /dev/sdb appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020
mdadm: /dev/sdc appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020
mdadm: /dev/sdd appears to be part of a raid array:
       level=raid5 devices=3 ctime=Sun Aug  2 22:41:06 2020
Continue creating array? y
Continue creating array? (y/n) y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.


    cat /proc/mdstat

    Code
    Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
md0 : active raid5 sdd[2] sdc[1] sdb[0]
      5860268032 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
      bitmap: 22/22 pages [88KB], 65536KB chunk

unused devices: <none>

    wipefs -n /dev/md0

    Nothing showed up


    wipefs -n /dev/sdb

    Code
    DEVICE OFFSET TYPE              UUID                                 LABEL
sdb    0x1000 linux_raid_member 47a5cb5d-c1aa-d89d-c08c-1e2e811e54c2 Serveur.lan:0


    wipefs -n /dev/sdc

    Code
    DEVICE OFFSET TYPE              UUID                                 LABEL
sdc    0x1000 linux_raid_member 47a5cb5d-c1aa-d89d-c08c-1e2e811e54c2 Serveur.lan:0


    wipefs -n /dev/sdd

    Code
    DEVICE OFFSET TYPE              UUID                                 LABEL
sdd    0x1000 linux_raid_member 47a5cb5d-c1aa-d89d-c08c-1e2e811e54c2 Serveur.lan:0

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