The “smartctl” daemon (Self-Monitoring, Analysis and Reporting Technology) is warning of impending disk failure:
This message was generated by the smartd daemon running on: host name: www DNS domain: bclug.ca NIS domain: bclug.ca The following warning/error was logged by the smartd daemon: Device: /dev/bus/4 [megaraid_disk_01], SMART Failure: DATA CHANNEL IMPENDING FAILURE DATA ERROR RATE TOO HIGH Device info: [SEAGATE ST3146855SS S513], lu id: 0x5000c500050e256f, S/N: 3LN1MP6X, 146 GB For details see host's SYSLOG. You can also use the smartctl utility for further investigation. The original message about this issue was sent at Tue Dec 22 13:02:02 2020 PST Another message will be sent in 24 hours if the problem persists.
It’s strongly advised to install & configure smartmontools package so disk failure can be avoided / mitigated.
moi
Despite knowing which physical drive by the flashing light on front panel, I don’t know which drive in the /dev/sd topology, because it’s shown as:
Device: /dev/bus/4 [megaraid_disk_01], SMART Failure: DATA CHANNEL IMPENDING FAILURE DATA ERROR RATE TOO HIGH Device info: [SEAGATE ST3146855SS S513], lu id: 0x5000c500050e256f, S/N: 3LN1MP6X, 146 GB
Preferable is the format of /dev/sdX, and ls -la /dev/bus shows unexpected result, no /dev/bus/4, no “megaraid…”:
ls -la /dev/bus/
drwxr-xr-x 3 root root 60 2021-09-22 01:15 ./
drwxr-xr-x 21 root root 4380 2021-10-29 17:47 ../
drwxr-xr-x 6 root root 120 2021-09-22 01:15 usb/Regardless, I’m kind of looking forward to the impending failure. Either an opportunity to upgrade to 20.04, and test all backups, or I’ll get to see mdadm bring the hot spare into action in the RAID array.
Also, have been running out of disk space while making tarballs of NextCloud and other websites’ documentroots:
df -h | grep dev | grep -v loop /dev/sdc1 133G 131G 0 100% /
