Hello, I am new to unraid I setup a cache drive but its only using 475MB of my 1TB NVMe Drive. I am a bit confused and not sure where to go. Any support would be appreciated. Thanks! Please see the attached image.

attach diagnostics to your NEXT post in this thread

With the array stopped completely wipe the device with:

blkdiscard -f /dev/nvme1n1

Then start array and re-format, that should fix it.

18 minutes ago, JorgeB said:

With the array stopped completely wipe the device with:

blkdiscard -f /dev/nvme1n1

Then start array and re-format, that should fix it.

 

 

I did this and I am still only showing a disk size of 537MB 

 

Also, attached diagnostics.

 

 

Thanks for the help.

server1-diagnostics-20220907-1251.zip

Run it again with the array stopped and post the output.

Okay, so I stopped the array ran 'blkdiscard -f /dev/nvme1n1' and this was the response 

 

root@Server1:~# blkdiscard -f /dev/nvme1n1
blkdiscard: Operation forced, data will be lost!
root@Server1:~# 

 

Now post the output of

fdisk -l /dev/nvme1n1

 

root@Server1:~# fdisk -l /dev/nvme1n1
Disk /dev/nvme1n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 970 EVO Plus 1TB            
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
root@Server1:~# 

 

Now start array and format.

Still no luck only 537MB, seems really strange. Everything detects the 1TB disk but it wont useit.

 

Edited September 7, 20223 yr by Austin Detzel
Mispelling

Very strange, post again the output of:

fdisk -l /dev/nvme1n1

 

Sure thing

 

root@Server1:~# fdisk -l /dev/nvme1n1
Disk /dev/nvme1n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 970 EVO Plus 1TB            
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device         Boot Start        End    Sectors   Size Id Type
/dev/nvme1n1p1       2048 1953525167 1953523120 931.5G 83 Linux
root@Server1:~# 

 

That looks correct, please reboot in case there's something still in RAM about the old layout.

Full Reboot, and no luck

Post new diags after rebooting and the output of fdisk.

I am having a similar issue. I have 4 1TB drives, one parity, three pool. The first pool drive is fully used, the second about 500GB and the third about 900K.

All four drives show in fdisk that they have one partition containing the entire drive.

Attach Diagnostics ZIP to your NEXT post in this thread.

Here is the diagnostic information.

cashill-diagnostics-20251218-1104.zip

For a new array Unraid will use the existing largest partition to use the full capacity, and assuming they don't have data, do a new config (Tools - New Config - Keep all - Apply), then on main click on the disks and then "ERASE", then start the array and reformat them.