Smart

From DWIKI

Disk monitoring

Links

Tools

  • smartctl
  • gsmartcontrol

 

Useful commands

enable smart

smartctl -i /dev/sda

check smart status

smartctl -a /dev/sda

check smart status of disk in raid array

Something like

smartctl -a /dev/bus/0 -d sat+megaraid,11

check error log

smartctl -l error /dev/sdb
      

Device: /dev/bus/0 [megaraid_disk_09] [SAT]

Try

smartctl --scan

 

 

Some codes and messages


LBA_of_first_error

 

Device is: Not in smartctl database [for details use: -P showall]

Try

/usr/sbin/update-smart-drivedb

otherwise check out https://www.smartmontools.org/wiki/FAQ#MyATASATAdriveisnotinthesmartctlsmartddatabase

Uncorrectable Sector Count

Check https://medium.com/@satyeshukumar/how-to-fix-uncorrectable-sector-count-warning-5a38c56d3faf

198 Offline Uncorrectable

bad sign, on ssd mostly/only when number gets high

 


SSD specific

231 SSD_Life_Left

Percentage of life left

233 Media Wearout Indicator

241 Lifetime_Writes_GiB

Amount of data written so far

smartd: Failed SMART usage Attribute

Might be yelling about a disk that's already been replaced, try restarting smartd

FAQ

List disks

smartctl --scan

A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

meh

 

Device: /dev/bus/0 [megaraid_disk_09] [SAT], failed to read SMART Attribute Data

Controller probably doesn't allow smart,


FAILURE PREDICTION THRESHOLD EXCEEDED [asc=5d, ascq=0]

time to replace disk?