What does the message "smartd[<pid>]: Device: /dev/sdd [SAT], 6 Currently unreadable (pending) sectors" mean and what to do about it?
Issue
Server is logging below messages continuously
<timestamp> <nodename> smartd[<pid>]: Device: /dev/sdd [SAT], 6 Currently unreadable (pending) sectors
Environment
- Red Hat Enterprise Linux 7
- smartmontools
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