On Debian 8.6 (Jessie), I get the following error messages in syslog/dmesg:
At first my heart stopped, as these are external USB harddrives used for backups![Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 Sense Key : Hardware Error [current] [descriptor]
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 Add. Sense: No additional sense information
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 CDB: ATA command pass through(16) 85 06 2c 00 00 00 00 00 00 00 00 00 00 00 e5 00
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 Sense Key : Hardware Error [current] [descriptor]
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 Add. Sense: No additional sense information
[Fri Apr 5 20:26:22 2019] sd 9:0:0:0: [sdh] tag#0 CDB: ATA command pass through(16) 85 06 2c 00 da 00 00 00 00 00 4f 00 c2 00 b0 00
...but there's a time pattern:
The message appears every hour at 26/56 minutes
[SOLUTION]
Then I found this answer by Colin Ian King:
My kernel's version is:I believe from what I understand from this fix and the errors being seen is that ATA pass-through commands with opcodes 0x85 "ATA command pass through(16)" and 0xa1 "ATA command pass through(12)/Blank" are being now (possibly erroneously) issued and hence causing these error messages.
Looking at the ATA pass-through command data, it looks like a SMART (Self-Monitoring, Analysis and Reporting Technology) ATA command is being issued (command code 0xb0), I'm speculating perhaps this H/W is not able to handle this.
I'm going to update this system soon to Debian 9 (Stretch) anyways, and I'll report if the error messages are gone with a more recent kernel.Linux 4.4.19-1-pve #1 SMP Wed Sep 14 14:33:50 CEST 2016 x86_64 GNU/Linux
Thanks Colin for saving me from a heart attack
