I'm confused about this smartctl output. It says SMART status is not supported, but then it says it PASSED.
# sudo smartctl -H -d megaraid,24 /dev/sdb smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-1160.59.1.el7.x86_64] (local build) Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org === START OF READ SMART DATA SECTION === SMART Status not supported: ATA return descriptor not supported by controller firmware SMART overall-health self-assessment test result: PASSED Warning: This result is based on an Attribute check. # echo $? 4
According to the man page, status code 4 means prefail Attribute is less than the danger threshold.
EXIT STATUS ... ... Bit 4: We found prefail Attributes <= threshold.
So I'm confused, is SMART data available on this disk or not?