How to restore OMV 4.X from backup-plugin to system SSD

Hey, guys,
The explanation is great.
Unfortunately I did not understand a small thing.
If my system disk or USB stick is broken.
I take a new disk.
Do I have to install the OMV before?
Or is it enough to install dd if=/mnt/YOUSHOULDKNOW/backup.grubparts of=/dev/YOUSHOULDKNOW?
and then fsarchiver restfs backup.fsa id=0,dest=/dev/YOUSHOULDKNOW.

Thank you very much for the answer.
Many greetings
gelo

First, thanks for the guide.

OMV will be my backup repository (among other things) so my ability to restore IT was critical to test early. Using this guide I was able to get to Step 15 before encountering a problem due to my root fs being btrfs. I was additionally required to use fdisk to delete the old partition, create a new partition (with the same parameters, I was asked to keep/remove the existing signature; select remove and the mkfs.btrfs will now succeed).
So:
‣ fdisk /dev/sda
‣ delete partition 1 (my root)
‣ create new partition 1 with defaults (same as old partition)
‣ remove old signature
‣ fsarchiver restfs -v -o backup-omv-22-Jan-2019_22-31-09.fsa id=0,dest=/dev/sda1 NOW works

[*] Note: I tried to manually "mkfs.btrfs -f /dev/sda1 -L 'khione-ssd-r' -U '7ea79897-dbb0-4698-b5ce-a17430edcd96' -s 4096" after the fdisk which worked, but fsarchiver then still failed. Deleting the partition again and running fsarchiver worked. The takeaway seems to be that mkfs.btrfs won't overwrite an existing partition and it is called by fsarchiver restfs.

Thanks for the great guide!

How can I verify my fsarchiver backup ran successfully? When I run it manually it freezes at 41%. Although this could be due to my login timeout in the web panel.

• The .fsa file is 34% of the used HDD space (.fsa is 6.5GB, used HDD is 19GB).
• I set a 1 hour schedule and all 5 backups are the same size.
• I do not get an email output.
• All 6 files are created every time.

Zitat von ryecoaaron

The cron job will fail and email you if you have notifications setup. You can also run an archinfo on it - http://www.fsarchiver.org/quickstart/

Thanks for the reply. This is exactly what I needed to know.

I have my head wrapped around this except for 1 thing which might be a stupid question. That is restoring to a new HDD. I need to run the command below to write the backup of grub and the partition table. So will running this command restore the extended & swap partitions like seen by the output of lsblk below.

The more I read what I type the more clear the answer seems, but I want to make sure I don't royally screw up.

dd if=/mnt/YOUSHOULDKNOW/backup-omv-15-Jan-2019_14-12-01.grubparts of=/dev/YOUSHOULDKNOW

Here's the output of lsblk:

YOUSHOULDKNOW      8:96  0   30G 0 disk          type

  ├─YOUSHOULDKNOW1 8:97  0 29.8G 0 part /        Linux

  ├─YOUSHOULDKNOW2 8:98  0    1K 0 part          Extended

  └─YOUSHOULDKNOW5 8:101 0 29.8G 0 part [SWAP]   Linux Swap / Solaris

When restoring to new (larger) drive, I've had some issues. I needed to do a clean install OMV, and after restore backup. I did try with and without step 14 "dd if=/mnt/YOUSHOULDKNOW/backup.grubparts of=/dev/YOUSHOULDKNOW". Also had CloneZilla image and got it fixed. (Also had mdadm errors, but don't even have RAID, also fixed).
It was a challenge in my case anyway...

For those who need to edit fstab (for whatever reason)... On OMV4: edit fstab and after saving file (don't reboot) run omv-mkconf fstab. On OMV5: edit fstab and (without reboot) run omv-salt deploy run fstab. Found this here, thanks!

Now I'm looking for a solution for the following:
I partitioned my OS SSD (using Parted Magic, not OMV on top of Debian way). Everything works fine (have had this on OMV4 and now on OMV5)...
Currently running OMV5 in UEFI mode (extra partition). Partition layout: sda1=EFI partition (vfat), sda2=OS partition (ext4), sda3=swap partition and sda4="extra partition" (ext4). With sda3 / swap at the end of disk.
Using fsarchiver doesn't include the "extra" partition, only the EFI/vfat and sda2(OS). Would like to backup the extra (data) partition as well (as scheduled job).
Anyone, have any ideas? Thanks!

*** The issues above had nothing to do with my partition layout. Tested multiple times with clean install (no changes in partitions) and restore to clean, same and bigger SSD.

Edit: added screenshot of disk layout used on (other and OMV4) system to clarify.

Zitat von bvrulez

My software setup is

- OMV 4.1.17
- OMV-Extras
- I made a backup with the backup-plugin from the Web-GUi.
- Backup setting: fsarchiver (no password)
- Backup destination: The easiest way to do the backup was to my RAID-array.

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Hi bvrulez,

I highlighted lines in question in your guide. I tried to use openmediavault-backup plugin but I don't see how I can point it to my system drive or choose a destination. I'am currently using SSD as a system drive. When I open the plugin options only let me choose shares. it looks like I'am missing something? Thank you.

Zitat von macom

Correct. You have to create a share for the backups.
Making backup of the OS on the OS does not make really sense when you want to recover from a failed drive.

Making a backup of the OS to the same location where OS is installed making no sense and I understand this. I guess my question was - how to use openmediavault-backup. Let me be more specific. I want to migrate from QNAP to OMV and for now(testing purpose, system learning, braking, restoring, experimenting, etc) I have built a small OMV system on a NUC with SSD sytem drive and two 2.5" drives for data. Of course one of the scenarios I want to implement here is - system drive loss/corruption and system restore after which I understand is achieved by copying/cloning the system drive partitions. Question: how can use openmediavault-backup to achieve my goal? Thank you.

Zitat von macom

Correct. You have to create a share for the backups.
Making backup of the OS on the OS does not make really sense when you want to recover from a failed drive.

Making a backup of the OS to the same location where OS is installed making no sense and I understand this. I guess my question was - how to use openmediavault-backup. Let me be more specific. I want to migrate from QNAP to OMV and for now(testing purpose, system learning, braking, restoring, experimenting, etc) I have built a small OMV system on a NUC with SSD sytem drive and two 2.5" drives for data. Of course one of the scenarios I want to implement here is - system drive loss/corruption and system restore after, which I understand is achieved by copying/cloning the system drive partitions. Question: how can use openmediavault-backup to achieve my goal? Thank you.