I have been running unRAID for a short time with  2x4Tb disks - one as data and one as parity.

The HP Gen8 box that I am using has a 5th top slot for a slimline disk and I have put in a 0.5TB drive in there to use as a cache drive.

 

unRAID can see the new drive and I have selected it as a cache drive.

It is shown as the cache drive with a green light but it is listed as "Unmountable"

The drive has existing data on it from when it was in a windows laptop but I don't need any of that data.

 

I have tried formatting it but that doesn't seem to change anything.

(And formatting retruns straight away i.e. there is no delay and I can select formatting again.)

 

Using "Fix Common Problems" util I can see that the error is as follows:

cache (ST500LX012-SSHD-8GB_W3N0S2JL) has file system errors (No file system (32))

 

I would be very grateful for any help with resolving this.

I have attached my diagnostics zip.  

 

tower-diagnostics-20171112-0632.zip

You cache drive or at least a partition from it if mounted by the UD plugin, unmount and you can then format it.

 

Nov 12 06:02:07 Tower ntfs-3g[5433]: Mounted /dev/sdd1 (Read-Only, label "WINRE_DRV", NTFS 3.1)
....
....
Nov 12 06:04:22 Tower emhttp: shcmd (145): set -o pipefail ; mkfs.btrfs -f -K -dsingle -msingle /dev/sdd1 |& logger
Nov 12 06:04:22 Tower root: ERROR: /dev/sdd1 is mounted

 

Thanks for that. I managed to mount, format and assign the disk as a Cache drive. However, it came up as only 1.04Gb.

 

I have unassigned it again so that I can have a look at the partitions (as shown below) and unmounted them all.

 

 

Have tried reformatting to BTRFS and back to ZFS but it always ends up as picking up just the 1.04Gb partition as shown below.

 

 

I have attached an updated diagnostics zip

 

tower-diagnostics-20171112-0849.zip

Edited November 12, 20178 yr by GadgetObsessed
Errors

Unassigned it, delete all existing partitions using the UD plugin, and then re-assign and re-format.

Thanks again.

 

Sorry but I am somewhat of noob with unRaid.

I assume that UD is Unassigned Devices.

I can see the partitions in UD but I cannot see any way to actually delete them??

What do I actually do in UD to delete an existing partition?

Go to settings -> unassigned devices and enable destructive mode, you'll than see a red x next to each partition (they need to be unmounted first)

Edited November 12, 20178 yr by johnnie.black