After power failure, only 2 drives show up

#1

Hello there,
I am using the QUAD SATA HAT (v1.2). I updated the JMicron firmware to v8.1.3.6 on all 4 ports.
I use the script to make OMV detect the disks’ names and manufacturers. That’s all good.
I have a RAID10 array, and works flawlessly.

However, when a power failure occurs (something which happens more often that I’d like in my area and my old house), pretty much every time, the PI only detects 2 disks upon that first boot after the power cut. I have to manually SSH into the PI and issue a reboot (normally one, sometimes more) to make the Pi detect all 4 drives.

Please have a look at various outputs such as lsblk, rockpi service, and dmesg, here: (it gave me an error about posting 2 URLs … :slight_smile:

Thank you!!

#2

Hi!

Line 405:

[ 89.957511] usb 2-1: SerialNumber: RANDOM__A879645F5DA5

This means you have to unplug and plug in again the USB adapter.
Try to clean it from the dust.

#3

Not to sound ungrateful but…how come that dust is not present after I reboot?
Dust is not the reason anyway, the Quad SATA NAS is in a cupboard with no dust, and it’s been literally 2 weeks since I plugged it in.

There must be a better reason out there for this to happen. I’ll keep looking.

Thank you anyway!

#4

It happen with me sometimes too.
After a reboot, every HDD can connect without any issues, but sometimes I need more reboot.

I don’t know what is the magic.
Usually, when I can’t start it with all HDD, I power off it and just push and pull a little bit the USB adapter, then power on.

#5

It’s possible the vibration from the HHD loosened the USB adapter.

#6

Sorry old thread… but I finally got a raspberry pi, lol. I have the same behavior… now i reboot, all 4 show up, but it has to rebuild raid 5 on the 4th drive again.