
Truenas Scale - how to use same device as cache VDEV in two pools at the same time
Truenas 25.04 CE used for this guide TrueNas philosophy is “1 device - 1 assignment”. So by doing this we are going off-piste and who knows what could happen. Please proceed only if You have backup of Your data and You know what You are doing. Identify the SSD with the command lsblk For instance: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 10.9T 0 disk └─sda1 8:1 0 10.9T 0 part sdb 8:16 0 3.6T 0 disk └─sdb1 8:17 0 3.6T 0 part sdc 8:32 0 3.6T 0 disk └─sdc1 8:33 0 3.6T 0 part sdd 8:48 0 3.6T 0 disk └─sdd1 8:49 0 3.6T 0 part nvme1n1 259:0 0 119.2G 0 disk ├─nvme1n1p1 259:1 0 1M 0 part ├─nvme1n1p2 259:2 0 512M 0 part └─nvme1n1p3 259:3 0 118.7G 0 part nvme0n1 259:4 0 953.9G 0 disk └─nvme0n1p1 259:5 0 951.9G 0 part nvme2n1 259:6 0 238.5G 0 disk we’ll take the example with nvme2n1 and we’ll use the parted command for it: ...