: The logical device name (though behind a RAID, this often acts as the entry point to the controller). Error with smartctl on Dell/Megaraid · Issue #660 - GitHub
The root cause of this error stems from structural virtualization. Under standard operating conditions, running smartctl -a /dev/sda forces the system to poll a standard block device node. However, when a machine utilizes an enterprise hardware controller—such as a Dell PERC (PowerEdge RAID Controller) Go to product viewer dialog for this item.
You cannot just guess the number N . You need to know the physical drive ID recognized by the MegaRAID controller.
EID:Slt DID State DG Size Intf Med 252:0 7 Onln 0 465.25 GB SATA HDD 252:1 6 Onln 1 465.25 GB SATA HDD 252:2 5 Onln 2 74.0 GB SATA SSD 252:3 4 Onln 2 74.0 GB SATA SSD : The logical device name (though behind a
or a Broadcom/LSI MegaRAID adapter—the Operating System does not maintain direct line-of-sight to the physical Hard Disk Drives (HDDs) or Solid State Drives (SSDs). Instead, the RAID controller acts as a protective mediator:
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
user wants a comprehensive article about the "smartctl open device dev sda failed dell or megaraid controller please try adding 39d megaraid n 39 extra quality" error. This is a technical support article. I need to gather information from multiple sources. I will perform searches using the specified terms. search results show various sources. I need to open them to gather detailed information. I will open the relevant ones. have gathered information from various sources. The user's keyword includes "extra quality", which might be a request for high-quality, comprehensive content. I will structure the article to cover the causes, solutions, and details of the error. The article will include sections on understanding the error, step-by-step solutions, identifying physical drives, important notes, and conclusion. I will cite the sources appropriately. Fixing the "smartctl open device /dev/sda failed: DELL or MegaRaid controller" Error However, when a machine utilizes an enterprise hardware
/dev/sda -d megaraid,N # N is your device ID
After initiating a test, monitor its progress with:
To fix this error, you need to tell smartctl to use the megaraid driver and specify which physical disk to query using its N number. EID:Slt DID State DG Size Intf Med 252:0 7 Onln 0 465
| Component | Meaning | | :--- | :--- | | | Device Type Flag | | megaraid | The driver for Dell PERC / LSI controllers | | ,N | The physical disk index (0, 1, 2, etc.) |
smartctl --scan
smartctl open device: /dev/sda failed: DELL or MegaRAID controller, please try adding -d megaraid,N