One of my RAID 1 SSD (which contains a VM image) triggered an alert from smartd daemon tonight at 1:27AM:
Quote from smartd daemon
This message was generated by the smartd daemon running on: host name: nas DNS domain: hidden.tldThe following warning/error was logged by the smartd daemon:Device: /dev/disk/by-id/ata-CT500MX500SSD1_1911E1F0E132 [SAT], 1 Currently unreadable (pending) sectorsDevice info:CT500MX500SSD1, S/N:1911E1F0E132, WWN:5-00a075-1e1f0e132, FW:M3CR023, 500 GBFor details see host's SYSLOG.You can also use the smartctl utility for further investigation.Another message will be sent in 24 hours if the problem persists.
Jun 6 01:27:31 nas smartd: Device: /dev/disk/by-id/ata-CT500MX500SSD1_1911E1F0E132 [SAT], 1 Currently unreadable (pending) sectorsJun 6 01:27:31 nas smartd: Sending warning via /usr/share/smartmontools/smartd-runner to email@example.com ...Jun 6 01:27:31 nas smartd: Warning via /usr/share/smartmontools/smartd-runner to firstname.lastname@example.org: successful
It shows to be solved at 1:57AM. (I assume there is a cron every 30 minutes).
smartctl output shows:
I'm quite used about reading SMART and I can't see any error here... Which is comforting. But in the same time, there was still an error, and I don't like that.
So my questions are:
Do you have any idea what would this error indicate on a SATA SSD?
Is there anything to worry about?
How can there be such an error but nothing in SMART
Any enlightment appreciated.