To start off with background, I am ok with networking and a keen Linux user too - not an expert, but reasonably capable. Have been using my ReadyNAS 102 since 2015, and it was working fine up until today. It was at the latest firmware build and I have always run apt to update the OS with no issues ever. Today it updated and I lost my ssh link to it - the unit no longer responded to ping requests. I figured a crash, and rebooted it with a constant ping running on my pc. Router allocates the DHCP address to the unit and it responds to pings, right up until the OS boot from disks - then it stops - I can just about get an ssh prompt, but before I can enter the password - pings stop and I am out. It's almost as if the firewall has cut me off - removing the ethernet cable and replacing it again, re-applies the DHCP address lease timer, so it's working, just not allowing access.
If I remove the disks, eventually I get the default web page etc, but I really don't want to lose my data, so I am a bit stuck.
I have tried inserting a single disk and attempted the OS reset recovery from the boot mode, but this doesn't work.
I can factory default, of course, and start over, but I need to get my data first. I tried mounting one of the disks read only, to a linux box using a USB dock - the drive is seen but won't mount - giving an error message.
Can anyone think of anything to solve this issue, or if not - what are the community's experiences with recovering data from healthy disks ?
Any assistance would be really welcome, and thanks in advance for anything you can suggest.
I penned a reply last night and included output from commands, but today, I see it is not here. Annoying, but must have been my error.
I was using a PI4 which doesn't have btrfs, as far as I can tell, and the process to incorporate seems to be tricky too. I have an old Dell, I will try that and make sure the support is there.
The disk is detected as /dev/sda and parted -l shows /dev/sda1 as a GPT drive. I think this is why it will not mount for me.
Mount reports it is unable to mount special device. In DMESG, there are reports stating: Magic mismatch
Can't find valid F2FS filesystem in 1th superblock
I will gather the info again,and post it later here.
Can you suggest a good distro to support the btrfs you mentioned, natively?
