@Ben_Abecassis Welcome to the Rockstor community.
I can chip in on this one:
We have a css / theme issue of sorts so that the normally visible magnifiying glass icon for search is black and so becomes invisible. If you mouse over in the top right you should see it. I’ll try and have a look at this soon.
The “Rescan” button at the bottom of the Disk page should have help here, but yes sometimes hardware can be tricky when live plugged.
This is currently ‘by design’ as we don’t cater for mdraid except in a very limited use. And so we currently just show the:
message whenever we encounter one. If you are certain that this disk’s prior life is over then you can wipe it’s mdraid personality along with all it’s prior data via the instructions in the following issue we have open to improve the docs on this element of using prior use mdraid disks:
But do note that this will wipe the disk of all it’s prior data. This disk was likely in a NAS before hand which used the mdraid software raid system. Rockstor only caters for the btrfs raid/file system. Hence the requirement to wipe and start afresh.
Of particular importance when you do this, as root in a local terminal or via a ssh session to your Rockstor machine, is that you select the correct disk.
In your case the disk name is displayed in the picture you posted. And so it’s full by-id name (those used in Rockstor) is as follows:
so if you use that name (TAB key should auto complete) and make absolutely certain it is definitely the correct disk, then you can use the “mdadm --zero-superblock you-dev-here” command, after first stopping what is likely to be /dev/md0 and you should be good. The disk will then no longer have this ‘special’ superblock and so should be usable by Rockstor.
Hope that helps and take a look at that issue for a little background. And if you are at all unsure of what you are doing here then do ask for more explicit instructions as you will be destroying prior data on whatever disk you specify.