Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39d Megaraid N 39 Extra Quality ✨

I am running smartctl on a Dell server with a MegaRAID controller. The command smartctl open device /dev/sda failed.

[[inputs.smart]] devices = ["/dev/sda -d megaraid,0"] [inputs.smart.tags] disk_slot = "0" [[inputs.smart]] devices = ["/dev/sda -d megaraid,1"] [inputs.smart.tags] disk_slot = "1" Use code with caution.

or H755 create a "logical volume." The OS sees the volume, but standard SMART commands cannot reach the physical disks behind the RAID firmware. I am running smartctl on a Dell server

The error message explicitly tells you what to do. You must:

You cannot guess this number, as it doesn't always start at 0. Use the storcli (or older MegaCli ) utility to find the (Device ID). Command : sudo storcli /c0 /eall /sall show or H755 create a "logical volume

smartctl -d megaraid,N --all /dev/sda

for N in $(seq 0 $((MAX_DISKS-1))); do echo "Checking $LOGICAL_DEV -d megaraid,$N" smartctl -H -d megaraid,$N $LOGICAL_DEV > /dev/null 2>&1 if [ $? -eq 0 ]; then echo "Disk $N exists. Health status:" smartctl -H -d megaraid,$N $LOGICAL_DEV | grep "SMART overall-health" echo "---" else # No more disks found break fi done Use the storcli (or older MegaCli ) utility

: If the command still fails with minor errors, you can try adding the -T verypermissive flag to ignore mandatory SMART command failures that the controller might be blocking. Troubleshooting Summary

smartctl open device: /dev/sda failed: DELL or MegaRAID controller, please try adding -d megaraid,N