Home / user-98143

brad's questions

Martin Hope
brad
Asked: 2020-10-23 17:06:28 +0800 CST
  • 0

I have a home media server that currently has 4 4TB drives in a Raid5 using mdadm. This gives me 12TB of space currently and it has almost run out. I want to add more space but would like to use bigger drives. I plan to eventually have 3 12TB drives in a Raid5, but don’t want to spend that much in one go.

I am wondering if the following pathway if feasible;

  1. Purchase and install a single 12TB drive and create an 8TB partition and a 4TB partition.
  2. Copy 8TB of my existing data to the 8 TB partition and the remaining 4TB to the new 4TB partition.
  3. Use LVM to combine the 4TB drives into 2 8TB logical volumes.
  4. Use mdadm to combine my one physical 8TB and 2 logical 8TB volumes into a 16TB RAID5 array (preserving the data on the physical 8TB drive).
  5. Copy the 4TB of data on the other partition into the new RAID volume leaving me with 4TB of space.
  6. When I get close to filling this (likely to be over a year or more from now) buy 2 new 12TB drives, create 8TB partitions on each, move the RAID to the 3 12TB drives, then grow the partitions to 12TB creating a 24TB RAID5 drive

Will this work?

Anyone got a smarter way of doing this that doesn’t involve just buying 3 drives right now?

raid mdadm raid5
Martin Hope
brad
Asked: 2017-03-28 03:56:04 +0800 CST
  • 1

I have an Ubuntu machine that I use as a dedicated Kodi device. It has built in Intel Graphics.

I recently bought a new 4K TV which is great except I pass the HDMI signal through an AV receiver that cannot cope with a 4K signal. If I change the resolution in Ubuntu to 1920x1080 (which is all I need for Kodi) it has a nasty habit of reverting to 4K on reboots and if the TV is switched off and on again.

I have tried a few xrandr scripts on startup but nothing has been 100% reliable in preventing the switch to 4K. Reading around it sounds like an xorg.conf file would be the best way to manage this situation but I have struggled to generate one.

If I go to a console screen ctrl + alt+f1 and shut down unity 

sudo service stop lightdm

I am not able to then generate an xorg.conf file. If I run sudo X -configure I get the following;

X.Org X Server 1.18.4
Release Date: 2016-07-19
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-59-generic x86_64 Ubuntu
Current Operating System: Linux kodi 4.8.0-36-generic #36~16.04.1-Ubuntu SMP Sun Feb 5 09:39:57 UTC 2017 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.8.0-36-generic root=UUID=2285a6a6-3668-451f-a779-9451f3880ce7 ro quiet splash vt.handoff=7
Build Date: 26 January 2017  12:26:18AM
xorg-server 2:1.18.4-1ubuntu6.1~16.04.1 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.33.6
    Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Mar 27 22:54:03 2017
List of video drivers:
    amdgpu
    ati
    intel
    nouveau
    qxl
    vmware
    fbdev
    vesa
    modesetting
    radeon
No devices to configure.  Configuration failed.
(EE) Server terminated with error (2). Closing log file.

I'm stuck at this point before even trying to wrangle the xorg.conf file into shape to get what I want done. Any helpful clues as to what I'm doing wrong?

xorg
Martin Hope
brad
Asked: 2012-10-17 14:50:44 +0800 CST
  • 2

I have a fresh install of Ubuntu 12.04 and it seems to be fine except after 5 minutes a dialog box warning of shutdown in 60 seconds appears. If I don't dismiss this, the computer does indeed shut down. If I do dismiss it it reappears after 5 minutes.

There is nothing in the power manager settings or screensaver settings to account for this. Where else can I look to find what is triggering this?

12.04