Comment 2 for bug 1471462

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Christian Franke (christian-franke) wrote :

> ... kernel: [1128701.864075] ata4.00: cmd b0/d5:01:06:4f:c2/...
> ... kernel: [1128701.864075] res ... Emask 0x4 (timeout)

This ATA cmd is a correct SMART READ LOG 0x06 (self-test log) command. If the command fails with "timeout", this is possibly not a smartmontools issue.

> Device info:
> INTEL SSDSA2MH080G1GC, ...

Some older Intel SSDs have known issues with the SMART READ LOG 0x00 (log directory) command: After this command was completed, the drive may hang. Smartd reads the log directory to check which log is supported, see https://www.smartmontools.org/ticket/89.

This very old X18/X25-M G1 series SSD may be affected or not. Please try whether the problem persists if '-F nologdir' is added to the smartd.conf configuration line.