That's what I am having at the moment.

 

I am using unraid v5 and have had no issues.  But, I recently discovered that I am down to roughly 30GB of free space and need more space to store (home) videos and photographs.  I purchased two 12TB drives: one to replace the 4TB parity drive and the other to replace one of two 1TB drives.  After that, the old parity would replace the remaining 1TB drive.

 

I ran a parity check, turned off autostart, did a safe shutdown, replaced the parity, and powered up.

 

The boot process stopped a few lines after a message (attached) that the volume (sda1) was not properly unmounted.  No idea which drive--though I assume it's the parity--it was because the unraid identifications are only three letters (e.g., parity was "sdb").  At this point, I cannot enter any line commands: only hit return.

 

After waiting a few minutes, I thought the prudent thing to do would be to just put the original parity drive back in, and the cogitate for a while. 

 

Unfortunately, it fails to boot.  It now stops after remounting the filesystem as read only (again, see attached).

 

These are twenty years of the boys growing up, so it has to be saved!

 

What should I do?

 

thanks in advance.

Edited May 10, 20206 yr by kimnach
solved

The answer to your question is on your monitor screen. You need to run a file system check on sda1. You assumed that sda1 is the parity disk but the error message tells you that it's your boot device. So power down and unplug your boot flash device and plug it into another computer - Windows, Mac or Linux - and check it for corruption.

 

If it were me, I'd put the drives back the way they were, get the USB fixed, make sure it runs ok, then update to the latest version of Unraid. The main reason I say that is v5 only supports ReiserFS, and it will perform VERY poorly with large drives. It maxes out at 16TB, but gets extremely slow when you get beyond 2TB used on a drive that has any kind of deletions and additions.

 

If you update to v6, you can use XFS, which works much better on large drives. Once you're updated and stable, upgrade the parity drive, ADD the 12TB in a new drive slot and format it as XFS, then copy the contents of as many of the ReiserFS drives as you can to the empty 12TB data drive, and format the ones you copied to XFS.

On 5/7/2020 at 8:12 PM, John_M said:

The answer to your question is on your monitor screen. You need to run a file system check on sda1. You assumed that sda1 is the parity disk but the error message tells you that it's your boot device. So power down and unplug your boot flash device and plug it into another computer - Windows, Mac or Linux - and check it for corruption.

 

Yes, I realized after posting that it was probably the thumb drive.  I must have bumped it, while pulling the cover off of the system, to the point that it was marginally inserted.

 

All is well.  I am just past the middle of a 65Hr parity-sync.

 

I am gathering additional drives onto which I will backup the files. 

 

Thanks.

15 minutes ago, kimnach said:

I am just past the middle of a 65Hr parity-sync

Are you using port multiplier or something? I would estimate 12TB parity sync to take about half that time.