Raid missing

    • OMV 3.x
    • Raid missing

      Hello,


      I need help to get access to my files. And i don't know a lot of linux and openmediavault.

      At file system 1 is missing and at raid managment no raid showing.

      My openmediavault server give a error at statup dat 2/6 is missing.

      I use 6 x 2TB HDD's

      cat /proc/mdstat
      blkid
      fdisk -l
      cat /etc/mdadm/mdadm.conf
      mdadm --detail --scan --verbose

      --

      Linux Openmediavault 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1 x86_64

      The programs included with the Debian GNU/Linux system are free software;
      the exact distribution terms for each program are described in the
      individual files in /usr/share/doc/*/copyright.

      Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
      permitted by applicable law.
      Last login: Sat Dec 31 16:56:29 2016 from imac-van-admin.local
      root@Openmediavault:~# cat /proc/mdstat
      Personalities : [raid6] [raid5] [raid4]
      md127 : inactive sdb[0] sdg[6] sdc[2] sdd[1]
      7813534048 blocks super 1.2

      unused devices: <none>
      root@Openmediavault:~# blkid
      /dev/sda: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="f9995c81-e25f-5306-0545-bb55ed5bf231" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
      /dev/sdb: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="7ba84afc-cbaf-95c8-273b-95c46029f319" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
      /dev/sdc: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="8c17bae1-8806-02e3-4a17-ba9db88d510d" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
      /dev/sdd: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="9e1d2a45-9702-4606-d73b-bc636ee05981" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
      /dev/sde1: UUID="9f48ea5d-024f-4ac9-ae55-dc288a4cef7d" TYPE="ext4"
      /dev/sde5: UUID="e6a7fe70-317b-4bfe-9649-3787d10870bc" TYPE="swap"
      /dev/sdf: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="d6b86b4b-2d86-071f-7ca2-61d094ffe431" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
      /dev/sdg: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="cf97f189-3073-83f1-9558-eddc01ff6c77" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"


      root@Openmediavault:~# fdisk -l

      Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 4096 bytes
      I/O size (minimum/optimal): 4096 bytes / 4096 bytes
      Disk identifier: 0x00000000

      Disk /dev/sdb doesn't contain a valid partition table

      Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 4096 bytes
      I/O size (minimum/optimal): 4096 bytes / 4096 bytes
      Disk identifier: 0x00000000

      Disk /dev/sdc doesn't contain a valid partition table

      Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 4096 bytes
      I/O size (minimum/optimal): 4096 bytes / 4096 bytes
      Disk identifier: 0x00000000

      Disk /dev/sda doesn't contain a valid partition table

      Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 4096 bytes
      I/O size (minimum/optimal): 4096 bytes / 4096 bytes
      Disk identifier: 0x00000000

      Disk /dev/sdd doesn't contain a valid partition table

      Disk /dev/sdf: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 512 bytes
      I/O size (minimum/optimal): 512 bytes / 512 bytes
      Disk identifier: 0x00000000

      Disk /dev/sdf doesn't contain a valid partition table

      Disk /dev/sdg: 2000.4 GB, 2000398934016 bytes
      255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 4096 bytes
      I/O size (minimum/optimal): 4096 bytes / 4096 bytes
      Disk identifier: 0x00000000

      Disk /dev/sdg doesn't contain a valid partition table

      Disk /dev/sde: 250.1 GB, 250059350016 bytes
      255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
      Units = sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 512 bytes
      I/O size (minimum/optimal): 512 bytes / 512 bytes
      Disk identifier: 0x000e89e8

      Device Boot Start End Blocks Id System
      /dev/sde1 * 2048 468553727 234275840 83 Linux
      /dev/sde2 468555774 488396799 9920513 5 Extended
      /dev/sde5 468555776 488396799 9920512 82 Linux swap / Solaris
      root@Openmediavault:~# cat /etc/mdadm/mdadm.conf
      # mdadm.conf
      #
      # Please refer to mdadm.conf(5) for information about this file.
      #

      # by default (built-in), scan all partitions (/proc/partitions) and all
      # containers for MD superblocks. alternatively, specify devices to scan, using
      # wildcards if desired.
      #DEVICE partitions containers

      # auto-create devices with Debian standard permissions
      CREATE owner=root group=disk mode=0660 auto=yes

      # automatically tag new arrays as belonging to the local system
      HOMEHOST <system>

      # instruct the monitoring daemon where to send mail alerts
      MAILADDR root

      # definitions of existing MD arrays

      # This file was auto-generated on Mon, 29 Jun 2015 06:41:20 +0000
      # by mkconf 3.2.5-5
      root@Openmediavault:~# mdadm --detail --scan --verbose
      mdadm: cannot open /dev/md/NasDiskRaid: No such file or directory
      root@Openmediavault:~#
    • first of all don't panic just yet. it is rare for 2 drives failure at the same time, check the logs, did you missed a warning(s) about bad drives.
      pop the case and make sure all your cables are connected properly.
      try to reboot the server after the hardware checks. BUT before you turn it back on
      go and get a nice external hard drive for backup.(unless you have a good backup already and all you need as time to restore.)
      unless you had raid-10, the setup can not usually tolerate 2 drive failure. so if both drives did really dead the whole raid is gone.
      you can try to force mount in degraded mode, but before you do make sure you have a place to copy date off, if by chance the raid will become available after.
      omv 3.0.56 erasmus | 64 bit | 4.7 backport kernel
      SM-SC846(24 bay)| H8DME-2 |2x AMD Opteron Hex Core 2431 @ 2.4Ghz |49GB RAM
      PSU: Silencer 760 Watt ATX Power Supply
      IPMI |3xSAT2-MV8 PCI-X |4 NIC : 2x Realteck + 1 Intel Pro Dual port PCI-e card
      OS on 2×120 SSD in RAID-1 |
      DATA: 3x3T| 4x2T | 2x1T
    • I don't remember exact command,
      Something like
      mount -degraded /dev/md127 /mnt

      Sent from my SM-N910T using Tapatalk
      omv 3.0.56 erasmus | 64 bit | 4.7 backport kernel
      SM-SC846(24 bay)| H8DME-2 |2x AMD Opteron Hex Core 2431 @ 2.4Ghz |49GB RAM
      PSU: Silencer 760 Watt ATX Power Supply
      IPMI |3xSAT2-MV8 PCI-X |4 NIC : 2x Realteck + 1 Intel Pro Dual port PCI-e card
      OS on 2×120 SSD in RAID-1 |
      DATA: 3x3T| 4x2T | 2x1T
    • mdadm --stop /dev/md127
      mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
      omv 4.1.14 arrakis | 64 bit | 4.15 proxmox kernel | omvextrasorg 4.1.13
      omv-extras.org plugins source code and issue tracker - github

      Please read this before posting a question and this and this for docker questions.
      Please don't PM for support... Too many PMs!
    • I get a error...


      Linux Openmediavault 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1 x86_64

      The programs included with the Debian GNU/Linux system are free software;
      the exact distribution terms for each program are described in the
      individual files in /usr/share/doc/*/copyright.

      Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
      permitted by applicable law.
      Last login: Sat Jan 7 12:09:47 2017 from imac-van-admin.local
      root@Openmediavault:~# mdadm --stop /dev/md127
      mdadm: stopped /dev/md127
      root@Openmediavault:~# mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
      mdadm: looking for devices for /dev/md127
      mdadm: Cannot assemble mbr metadata on /dev/sda
      mdadm: /dev/sda has no superblock - assembly aborted
    • Assuming you have a backup (since raid is not a backup), I would zero sda and try the same two commands again.

      dd if=/dev/zero of=/dev/sda bs=512 count=10000
      omv 4.1.14 arrakis | 64 bit | 4.15 proxmox kernel | omvextrasorg 4.1.13
      omv-extras.org plugins source code and issue tracker - github

      Please read this before posting a question and this and this for docker questions.
      Please don't PM for support... Too many PMs!
    • harmls wrote:

      Not a recent backup.
      What I am recommending can be risky.

      harmls wrote:

      And how the command line?

      1) dd if=/dev/zero of=/dev/sda bs=512 count=10000

      2) mdadm --stop /dev/md127

      3) mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
      Yep.
      omv 4.1.14 arrakis | 64 bit | 4.15 proxmox kernel | omvextrasorg 4.1.13
      omv-extras.org plugins source code and issue tracker - github

      Please read this before posting a question and this and this for docker questions.
      Please don't PM for support... Too many PMs!
    • root@Openmediavault:~# dd if=/dev/zero of=/dev/sda bs=512 count=10000
      10000+0 records gelezen
      10000+0 records geschreven
      5120000 bytes (5,1 MB) gekopieerd, 0,666498 s, 7,7 MB/s
      root@Openmediavault:~# mdadm --stop /dev/md127
      mdadm: stopped /dev/md127
      root@Openmediavault:~# mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
      mdadm: looking for devices for /dev/md127
      mdadm: no recogniseable superblock on /dev/sda
      mdadm: /dev/sda has no superblock - assembly aborted
    • Try this and we can add sda later.
      mdadm --assemble --force --verbose /dev/md127 /dev/sd[bcdfg]
      omv 4.1.14 arrakis | 64 bit | 4.15 proxmox kernel | omvextrasorg 4.1.13
      omv-extras.org plugins source code and issue tracker - github

      Please read this before posting a question and this and this for docker questions.
      Please don't PM for support... Too many PMs!
    • Did you wipe all of the drives? If more than one drive is missing the superblock, that is not good. The only other option that I know of is to use the create flag. This can wipe the array in a lot of situations. Your choice to risk it...

      This assumes it was raid 5 as well

      mdadm --stop /dev/md127
      mdadm --create --assume-clean --level=5 --raid-devices=6 /dev/md127 /dev/sd[abcdfg]
      omv 4.1.14 arrakis | 64 bit | 4.15 proxmox kernel | omvextrasorg 4.1.13
      omv-extras.org plugins source code and issue tracker - github

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