Posts by DHGE

  • LUKS Automount no longer working on new hardware

    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

    /dev/mapper/dataX

    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/

    here:

    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.

  • LUKS disk encryption plugin

    Quote from bunducafe

    1) What is best practice if I do want to boot from the HDD in a separate partition?


    2) What's the performance with an Odroid HC2? Does it get significantly hotter because of CPU usage? Is the speed bearable for usage as a media folder that should also host a large photo collection with Lightroom?

    1) Why would you want this?

    My devices boot from SD-Cards, a XU4 also from EMMC

    2)

    - 4.6 MBytes/s when copying. 1 GByte in ~ 4 minutes transferred.

    - temperature insignificant during file transfer

    - sometimes I use my NAS ODROIDs to display fotos on my TVs, I would not use it for heavy editing (possible though)

    On my ODROIDs I run syncthing to keep files/directories synced between all my devices, foto editing is done locally and immediately synced after editing -> I do not care about the speed since it is done in the background anyway

  • .bashrc of root get rewritten - WHY?

    I had a hard time upgrading one system from OMV4 to 5.

    I totally messed up the second machine with the attempt of an upgrade and did a clean install.


    Part of the problems following ryecoaaron procedure in the thread 27909-omv-5-0-finally-out/&pageNo=2 was that when working as root the path is not amended for the system utilities.

    su ...

    /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games


    I can cure that with

    Code
    export PATH="/sbin:/usr/sbin:/usr/local/sbin:$PATH"

    each time I want to work as root typing su and giving the password.


    The first lines of root .bashrc read:

    # This file is auto-generated by openmediavault (https://www.openmediavault.org)

    # WARNING: Do not edit this file, your changes will get lost.


    sudo su give me a suitable PATH.

    /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin


    Is this a feature or a bug?

    I expect to have the same behavior than in Debian where I have the correct path for root and can customize roots .bashrc

  • LUKS decryption with external USB device

    you might do a
    man cryptsetup
    once logged into your device via ssh


    this is what I did yesterday with a new external USB drive:





    this is how I mount them (not OMV but Manjaro) at boot via /etc/rc.local:

    Bash
    # falls es ein /dev/sdc1 (hoffentlich eine verschlüsselte USB-Platte) gibt: einbinden

    if [ -e /dev/sdc1 ]; then

    cryptsetup luksOpen --key-file /etc/keys/nc6400.key /dev/sdc1 backup_crypt

    mount /dev/mapper/backup_crypt /backup

    fi

  • WD purple drive suitable for keeping data?

    FWIW
    I have an ODROID hc1 that needs (maxes out at) a single 2,5" drive.


    When there is a sale on the large Seagate external drives like
    Seagate 2.5" USB 3.0 Backup Plus Portable Drive 4TB
    I buy one of these and break the case to get the drive since this is chaeper than byuing the same bare Barracuda.
    (Normally I use them the intended way and have now 3 of them as a spare for my hc1).


    These larger capacity 2,5" drives use SMR technology just like the WD Purple and most of the larger Reds.


    They work for years here and I am on a GBit network (-> 100 MBit/s under ideal conditions) and do not care too much about how long the stuff is running in the background.
    Reads and writes are mostly run via Syncthing here.


    TLDR: Purples are just fine and fast enough.

  • What happened with my apt?

    I wonder why it is still not fixed...


    I just setup a new ODROID hc2 and DLed the latest image from sourgeforge and ran into the same issue.


    fix: (as root)



    Bash
    wget -O /usr/lib/python3.5/weakref.py https://raw.githubusercontent.com/python/cpython/9cd7e17640a49635d1c1f8c2989578a8fc2c1de6/Lib/weakref.py

    I had to start over with etching an SD card since the unfinished dpkg -i process made my ssh logins impossible.


    OOPS: seems to be still in the repos
    After a dist-upgrade on my fresh install I hade to fix this again

  • LUKS disk encryption plugin

    Quote from budpad

    5. Format the unlocked HDD
    6. Mount the unlocked HDD

    maybe nitpicking:
    You format a crypt-mounted partion (e.g. /dev/mapper/partX) with a filesystem of your choice and let OMV mount that afterwards.


    Formatting the HDD gets you in an endless loop.

  • rootfs full after rsync to 'sleeping' USB device?

    I see several ways:


    - what makes the mount disappear? find the root of this and a remedy
    - use rsnapshot (a sophisticated script with exceptions, generations, ...) it does not start without the proper path mounted
    - write a batchfile that checks for an item e.g. a directory that you know must exist on your drive and do not start if the check fails
    - look into automount (overkill IMO)


    btw. if I use rsync for backup I use the "--delete" option

  • Web GUI not acessible

    You did not tell us what kind of hardware you have.


    Assuming it is a X86 based device with with a CD-reader or USB:
    Boot a live CD/USB like systemrescuecd and let it repair your filesystem (fsck ...).

  • Is OMV a good choice for me?

    Nextcloud can certainly do it.


    For me it is a bit too much. I use syncthing for my document and baikal for my PIM data (the latter not maintained any more).
    Syncthing is straightforward with its OMV plugin. I have uploaded my Baikal guide to this forum.


    For external access I use a VPN through my router. This is transparent to OMV.


    The more RAM the better. I use 2 GBytes ODROID HC1 and a XU4 with powerd USB harddrive as backup.
    A Rock64 is similar -> https://dietpi.com/#download
    I even started with a Raspberry Pi2 with 1 GByte but here the processor and the crappy LAN made it too slow for my taste.
    The ODROID HC1 and HC2 are a perfect package for my NAS/home server needs.


    I do not use RAID since syncthing has the same effect and the redundany is spread over as many devices as you like.

  • Slow Write Speed on Raspberyy Pi 3 b+

    Your only solution is better hardware.
    I started with a Raspi (knowing the specs but it was fun to learn) and I am now on an Odroid HC1.


    Depending on your external storage: many can be disassembled (e.g. I buy Seagate external drives and take them apart since buying a single 4TB 2.5" Seagate drive costs me more).
    Check if you got a standard drive!


    Then depending on the size of your disk either get a HC1 or HC2.
    For backup I use an ODROID XU4 with external USB drive (3.5" with its own power supply).


    I sync my data with syncthing and baikal between many devices running different operating systems.

  • How to clean recycle

    look up the commands


    df and du


    to find what is there. With mc you can comfortably move around your filesystem on the console.


    It is not the best idea to delete anything outside your shared folders manually.


    Not too useful on OMV: bleachbit


    apt-get clean deletes a lot of downloaded deb-files

  • Wie OMV Partitionen richtig nutzen und wie LOG Müll vermeiden

    Interessant wäre zu wissen, was für ein System Du hast.
    Die GBytes-Werte sind ja nun nicht riesig in late 2018...


    Dann würde ich mir die logs einmal anschauen. mc ist ein schönes Programm u.a. dafür. Normalerweise werden die rechtzeitig per logrotate (daran kann man auch drehen) verkleinert.


    Irgendein Fehlerprozess scheint die ja vollzumüllen. Das gehört behoben.


    Mit gparted kann man die Partitionen in der Größe verändern. Von der Kommandozeile ist das für einen Anfänger nicht einfach.

  • Root login issue

    on the console (ssh login):


    mount


    df -h


    These commands show you what is mounted and how the space on the mounted partitions is used.