[solved] All file systems get 'disconnected' from time to time

Hi all,

I'm new here on the forum, even if I'm a OMV user since version 4.
I use OMV on a RasPi4 for serving media in my home lan and a few more things.

The issue with file systems started a few months ago: from time to time I find the file systems (all of them) equally unmounted and not accessible anymore.

The list in the dashboard becomes empty (disks list is not empty), and I need to restart to fix it; sometimes I need to unplug from the power, then restart.

At first I thought about an abnormal current absorbtion, but I had no luck neither upgrading the RasPi power supply, nor adding a self powered (35W) USB hub.

Before disappering, a impressive amount of IO Wait cpu time appears in the graphs (see attached picture)

The file systems usually disapper when intensive I/O are performed, eg. torrent download

Installed disks:

1 SD card for the OS

2 HHD 8TB, USB3, self powered

1 HHD 2TB, USB2, self powered

1 Micro SD (for backup purpose) in USB adapter

A few more configuration details:

Processor BCM2835

Kernel Linux 6.1.21-v8+

What do I need to check to investigate this issue?
Is it a disk malfunction? shall I buy a new one before the epic failure?

Looking forward to your kind help

my regards

Angelo

Thank you both, chente and macom, for your suggestions. Would I find clues of temp and process issues in the syslog?
I've never seen temperature going higher that 55-60°C anyway... on the CPU

is that critical?

I have an aluminium case (the one in use) and another plastic case with fan, maybe I should try to switch them in order to address potential temp issues.

And in any case, what is the IO system waiting for (See graph attached to the first post)

A

It ended up it was one of the disks over heating and messing up the file system management.

I mounted an usb 12cm silent fan and my omv6 has been running for months now.

Thanks to you all for your help