LUKS Automount no longer working on new hardware

  • I am moving my OMV setup from an Intel 5000PSL to an HP 290 with a 4-bay USB to SATA drive enclosure.

    sda > internal drive (stock with hp 290) = data4 (keyfile LUKS)

    sdb > first drive in usb enclosure

    sdb1 > /boot partition

    sdb2 > / (root) system partition (password LUKS)

    sdb3 > swap partition (password LUKS)

    sdb4 > data1 (keyfile LUKS)

    sdc = data2 (second drive in usb enclosure) (keyfile LUKS)

    sdd = data3 (third drive in usb enclosure) (keyfile LUKS)

    When I moved the omv drives to the new PC I thought it would be as simple as loading the drives from the old server into the usb enclosure and connecting it to the USB port.

    OMV is booting off the first drive in the enclosure from the old server, but when OMV loads only the LUKS encrypted data partition on the boot drive (data1) will auto mount now.
    The LUKS partitions on the other drives (data2, data3, data4) do not auto mount.

    I've always used this guide to auto mount drives with no issues.…ted-drives-with-a-keyfile

    My fstab: (I tried removing the other data drives and only auto mounting the internal drive (data4) with no improvement)

    My crypttab:

    # <target name> <source device> <key file> <options>
    #System disks - DO NOT EDIT
    sda2_crypt UUID=e07a2c60-9fb4-4ff6-85b1-e2ad4c767ebf none luks,swap,discard
    sda3_crypt UUID=716b232a-f44a-4f46-a276-4e563856c0c6 none luks,discard
    #Data disks
    data1 UUID=1dfccdef-7d88-4d5e-9f42-59bd36020c37 /root/keyfile.key luks
    data2 UUID=298a0d0f-52ce-48f8-817f-d75d293a4836 /root/keyfile.key luks
    data3 UUID=134a1f5e-46b1-422a-b08d-ccc8476340b9 /root/keyfile.key luks
    data4 UUID=b9eb750a-5c20-4673-b652-e7e7915cb470 /root/keyfile.key luks

    I've tried everything I can think of to get data2, data3, and data4 to auto mount. I've tried replacing /dev/disk/ in the fstab with /dev/mapper, ive tried replacing UUID= with the directory of the device, ive manually removed the drives from the OMV config and readded them.

    I know OMV is detecting all the drives normally because it works fine if I just go into the web interface and manually unlock and mount the partitions, its just not auto mounting the encrypted partitions on the non-boot drives. The last thing I haven't tried is a clean install of OMV, otherwise I could just keep manually unlocking the drives but the automatic method always worked with the old server, why isn't it working now? It can't be a USB issue because the fourth drive is an internal SATA.

    EDIT: Added from the other posts 12/16/2020

    Now manually unlocking and mounting the drives isn't working ether.

    When I manually unlock the drives it shows this error when trying to mount them because the drives aren't listed in fstab.

    Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; mount -v --source '/dev/disk/by-label/data2' 2>&1' with exit code '1': mount: /dev/disk/by-label/data2: can't find mount source /dev/disk/by-label/data2 in /etc/fstab.

    If they ARE listed in fstab the startup will fail because it tries to mount them and it cannot because they are locked, and then OMV drops to emergency shell.

    So unless I comment out the drives from fstab when it drops to emergency mode, start OMV, then uncomment them, then manually unlock and mount the drives, my OMV just doesn't work now.

    Syslog shows this error:

    Dec 15 17:39:03 omv-server monit[996]: Filesystem '/srv/dev-disk-by-label-data1' not mounted
    Dec 15 17:39:03 omv-server monit[996]: 'filesystem_srv_dev-disk-by-label-data1' unable to read filesystem '/srv/dev-disk-by-label-data1' state
    Dec 15 17:39:03 omv-server monit[996]: 'filesystem_srv_dev-disk-by-label-data1' trying to restart
    Dec 15 17:39:03 omv-server monit[996]: 'mountpoint_srv_dev-disk-by-label-data1' status failed (1) -- /srv/dev-disk-by-label-data1 is not a mountpoint

    Additionally as a result of trying to change the config.xml manually to try anything to fix this OMV also shows these errors, and the filesystems tab no longer loads.

    Couldn't extract an UUID from the provided path '/dev/disk/by-label/data2'.
    Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; omv-salt deploy run --no-color quota 2>&1' with exit code '1': omv-server: Data failed to compile: ---------- Rendering SLS 'base:omv.deploy.quota.default' failed: while constructing a mapping in "<unicode string>", line 42, column 1 found conflicting ID 'quota_off_no_quotas_' in "<unicode string>", line 69, column 1

    So essentially I broke the OMV system.

    It would be good if I could just reinstall OMV from scratch, figure out why my data drives aren't auto mounting, fix it, and get everything working again. However if trying to fix an issue causes this much of a headache with no easily explainable solution, maybe I'm better off just going back to Windows 10, turning off all the security and update nonsense and just using that as a server instead. It would definitely have a lot less errors.

  • KM0201

    Approved the thread.
  • Code
    /dev/disk/by-label/data2: can't find mount source /dev/disk/by-label/data2 in /etc/fstab

    check your fstab

    the mount sources could read


    OMV does some mapping behind

    check it with ls, try to mount them manually

    if successful then check the non-working (in your case) fstabfor example with

    ls -l /dev/disk/by-label/


    lrwxrwxrwx 1 root root 10 Dec 18 09:32 WDred5p3T -> ../../dm-0

    which points to the first luks device dm0

    Here it works. I decrypt the drive after boot via the web. Then reread the shares via the MiniDLNA-refresh, restart Docker

    Maybe you have to do a mount -a after unlocking manually if you find no fault in your fstab.

  • I started with a clean install of OMV now and all blank data drives to make sure nothing interferes.

    Normal manual unlocking and mounting of the drives works again through the web interface.

    At first I still couldn't get auto unlocking working through /etc/crypttab with UUID in the example:

    data1 UUID=1dfccdef-7d88-4d5e-9f42-59bd36020c37 /root/keyfile luks

    so instead I tried the crypttab entry by /dev/disk/by-id with this example

    data1 /dev/disk/by-id/usb-ST310005_28AS_9VP2H4NS-0:0 /root/keyfile luks

    instead of using the UUID it now points to this path which points to /dev/sdd which allows it to unlock automatically on boot again.

    Once it unlocks through crypttab, fstab mounts /dev/sdd at /dev/disk/by-label/data1 which points to /dev/dm-1 which finally gets mounted at /srv/dev-disk-by-label-data1.

    None of my encrypted data drives show under /dev/disk/by-uuid as they would before, and the crypttab no longer accepts UUIDs, but as long as I can use disk/by-id instead auto unlocking will still work. As long as my files show up under /srv/ and I don't have to unlock each drive manually it doesn't really matter.

    It still doesn't explain why this happened just because I moved to another PC. Maybe its because the more consumer-oriented PC is newer or less compatible with Linux than my old server. Maybe its because some of the drives are connected through USB.

  • From my last post I was sure I had everything working. I moved all data back onto the ext4 drives, setup all the docker containers, setup wireguard vpn, setup shares and unionfs, had everything ready then rebooted one last time.

    Now for no reason again my fourth drive won't mount again.

    Honestly I've spent an entire week trying to figure out why these drives wont mount automatically when they always worked on the last machine. Unfortunately this isn't worth it for a box just to stream movies to a tv, store backups, and run a home vpn.

    At this point I'm just going to put Windows 10 on it with a network storage pool and call it a day.

    Thanks for the project and I hope these issues are resolved in a future release.

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