: Run smartctl --scan to see if the utility can auto-detect the available physical drive numbers.
Once you have the ID, run the command against the controller's device node (usually /dev/sda or /dev/bus/0 ). Cannot get smartctl working - Unix & Linux Stack Exchange : Run smartctl --scan to see if the
To find the correct disk number, you can use the following command: | | smartctl -a -d megaraid,0 /dev/sg0 |
| Mistake | Why It Fails | |---------|---------------| | smartctl -a -d megaraid /dev/sda | Missing ,N – controller doesn’t know which physical disk. | | smartctl -a -d megaraid,0 /dev/sg0 | Wrong device – use the block device /dev/sda , not the pass-through SG device. | | smartctl -a -d sat+megaraid,0 /dev/sda | Overkill – sat is for USB bridges; not needed for direct SAS/SATA behind MegaRAID. | | N too high | Controller returns error – try --scan to discover valid IDs. | | | smartctl -a -d megaraid
Drive Information : ================= ------------------------------------------------------- EID:Slt DID State DG Size Intf Med SED PI SeSz Model ------------------------------------------------------- 252:0 0 Onln 0 1.818 TB SATA HDD N N 512B ST2000NM0001 252:1 1 Onln 0 1.818 TB SATA HDD N N 512B ST2000NM0001 ------------------------------------------------------- Use code with caution.
If you have perccli (Dell) or storcli installed, run: /opt/MegaRAID/perccli/perccli64 /c0 /eall /sall show Use code with caution. Copied to clipboard Look for the DID (Device ID) or Slot Number column. 2. Run the Correct Command
For example: