Smart: Difference between revisions
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*[https://www.compuram.de/blog/en/the-life-span-of-a-ssd-how-long-does-it-last-and-what-can-be-done-to-take-care/ Life span of SSD] | *[https://www.compuram.de/blog/en/the-life-span-of-a-ssd-how-long-does-it-last-and-what-can-be-done-to-take-care/ Life span of SSD] | ||
*[https://lowendtalk.com/discussion/141041/is-my-server-ssd-disk-healty Is my SSD disk healthy?] | *[https://lowendtalk.com/discussion/141041/is-my-server-ssd-disk-healty Is my SSD disk healthy?] | ||
=== 231 SSD_Life_Left === | === 231 SSD_Life_Left === | ||
Percentage of life left | Percentage of life left | ||
=== 232 Available Reserved Space === | |||
Number of physical erase cycles completed on the SSD as a percentage of the maximum physical erase cycles the drive is designed to endure. | |||
Intel SSDs report the available reserved space as a percentage of the initial reserved space. | |||
=== 233 Media Wearout Indicator === | === 233 Media Wearout Indicator === | ||
Revision as of 15:14, 6 July 2023
Disk monitoring
Links
- Smartmontools wiki
- Wikipedia article
- Understanding SMART reports
- https://www.thomas-krenn.com/en/wiki/SMART_tests_with_smartctl
- Smartmontools with megaraid
- https://wiki.archlinux.org/index.php/S.M.A.R.T.
- smartmontools FAQ
- Smart hard drive stats
- Smart ASC error codes
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
- [https://unix.stackexchange.com/questions/106678/how-to-check-the-life-left-in-ssd-or-the-mediums-wear-level
- Life span of SSD
- Is my SSD disk healthy?
231 SSD_Life_Left
Percentage of life left
232 Available Reserved Space
Number of physical erase cycles completed on the SSD as a percentage of the maximum physical erase cycles the drive is designed to endure.
Intel SSDs report the available reserved space as a percentage of the initial reserved space.
233 Media Wearout Indicator
Decreases down to 1, then start hoping. It might still last a while.
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
Error: UNC at LBA = 0x00113cd8 = 1129688
Uncorrectable LBA error, throw away
FAQ
Wear level
Wear level on nvme
There's percentage used: High = bad
and available spare
Low = bad
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, it also seems to happen when drive is hot spare on megamaid controller.
FAILURE PREDICTION THRESHOLD EXCEEDED [asc=5d, ascq=0]
time to replace disk?
/dev/sdc: Unknown USB bridge
Smart over USB usually doesn't do much, try
smartctl -a -d scsi /dev/sdc
to get some information
??
