TrueNAS Core and Fatal Trap 12 troubles in NAS paradise

I had some trouble with my TrueNAS server. When the server was booting it created a Fatal Trap 12 and a reboot was initiated. In the video below you can see the fight I put up to solve the problem.

▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
00:00 - Intro
00:20 - Hardware Overview
02:00 - Fatal Trap 12
04:14 - Testing the memory
06:02 - Verifying the new memory
07:47 - Testing my pools
08:26 - Again Fatal Trap 12
09:05 - Stopping the scrub on pool RAID5
10:15 - Creating the new pool after exporting pool RAID5
13:17 - Replicating my backup to volume0 from volume1
14:20 - Updating TrueNAS Core for security
16:18 - A scrub to test the pool(s)
16:54 - Restoring my other data
19:35 - All data restored
20:11 - End Word

Link to PassMark MemTest386 https://www.memtest86.com/

Link to TrueNAS https://www.truenas.com/

Link to TrueNAS playlist https://www.youtube.com/playlist?list=PLJQANFmtbDea5xto8TwBHcTBoqou7L3eF

Link to XCP-ng playlist https://www.youtube.com/playlist?list=PLJQANFmtbDeYORouS5NgKehCCkex2V14L

Comments

How to migrate a dataset from one pool to another in TrueNAS CORE ?

The migration steps. 1. Stopping the services that use the dataset. (recommended). 2. Replicating the dataset to the new pool. 3. Verify that all data is replicated. 4. Put in operation the new dataset. 5. Delete the old dataset when satisfied (or not). The video tutorial can be found by clicking on the title or the picture below. How to migrate a dataset from one pool to another in TrueNAS CORE 1. Stopping the services that use the dataset (recommended). Go to the services tab and what I do if not certain of which services are used by the dataset I let only running the services from which I am cetain that they do not use the dataset. Also, control jails and Virtual Machines to be sure that they do not use the dataset. In the video I do not stop the services to show it is possible. 2. Replicate the dataset to the new pool. a. go to Tasks --> Replication Tasks b. add new replication task c. select source location (example select on this system source /mnt/volume1/VM iso) d. select

Using docker on FreeNas (TrueNAS Core)

In this tutorial we will go over the installation of docker in FreeNas (if using jails is not enough). The first step will be to install a host for docker in a virtual machine. In the documentation for FreeNas they propose to use Ubuntu. My actual version of FreeNAS is FreeNAS-11.3-U4.1.(now TrueNAS CORE 12). The video tutorial can be found here https://hometinylab.blogspot.com/2021/01/follow-up-on-using-docker-on-truenas.html . The major job will be to install a virtual machine on the FreeNAS platform. Select Virtual Machines in the FreeNAS menu. In the list you will see the existing docker instance running. Know click on the ADD button and we will create a second one for this tutorial. Step 1 Because we are using Ubuntu 20.04 has guest operating system we will select linux . Know we need to name the machine, for this tutorial it will be dockerblog . It is always handy to use the description field docker on Ubuntu for blog tutorial . All what follows we will keep has is. Click Next

How to fix a degraded pool state in TrueNAS ?

The title could also be``How to change a bad drive in TrueNAS?`` and in my case ``How to upgrade the pool storage space?`` but had it the end it was ``How to trouble shoot during this process?``. The documentation I used can be found had https://www.ixsystems.com/documentation/freenas/11.2/storage.html#replacing-a-failed-disk How to fix a degraded pool state in TrueNAS ? In my homelab environment I am using, one off the disks is bad in my TrueNAS. I had to detach the faulty drive to be able to boot the server up again. To replace the disk you must have a replacement disk from the same size or bigger. Because I have to upgrade my pool to a bigger capacity I will change all my 2TB drives to 6TB drives but for obvious reasons I will begin with the bad one: ``I like my data``. Before replacing the drive I will scrub the pool and set the faulty drive offline (which was not possible because the drive was not connected). Replace the drive and adding it again to the pool has a replacement. T

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