False alarms after hot-swapping drives

Hello—

I have a number of drives specified in my smartd.conf by path, for example:
/dev/disk/by-path/pci-0000:02:00.0-sas-exp0x5001b3d25c10803f-phy8-lun-0 -a
-s L/../../1/04

About 20 minutes hot-swapping out two hard drives (currently inactive and
not part of any array) for drives of a different make/model, I received
emails that included the following (one for each of the paths that had had
its drive swapped):

"""
The following warning/error was logged by the smartd daemon:

Device: /dev/disk/by-path/pci-0000:02:00.0-sas-exp0x5001b3d25c10803f-phy8-lun-0
[SAT], Failed SMART usage Attribute: 5 Reallocated_Sector_Ct.

Device info:
WDC WD6001FZWX-00A2VA0, S/N:, WWN:, FW:01.01A01, 6.00 TB
"""

The device infos in the emails corresponded to the previous drives in the
slots, rather than the ones currently (which are Seagate 8TB Archive
Drives). Running "smartctl -a" did not show any problems under
Reallocated_Sector_Ct for either Seagate drive. I also tried running
"smartctl -a" on the previously inserted drive (after connecting it
externally) and that also indicated no issues with Reallocated_Sector_Ct.

smartmontools persisted in alerting me to these phantom errors via my
syslog for the next several hours, however, until I restarted it at which
point there were no more messages.

Is this a known problem with hot-swapping drives or is there something more
worrisome going on?

Thank you,
Brent

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