Show health (after test):
smartctl -H /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.0-229.11.1.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
# smartctl -l selftest /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.0-229.11.1.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 28460 -
# 2 Short offline Completed without error 00% 25709 -
# 3 Short offline Completed without error 00% 25541 -
# 4 Short offline Completed without error 00% 25218 -
# 5 Short offline Completed without error 00% 25113 -
# 6 Short offline Completed without error 00% 24960 -
# 7 Short offline Completed without error 00% 24813 -
# 8 Short offline Completed without error 00% 24656 -
# 9 Short offline Completed without error 00% 24488 -
#10 Short offline Completed without error 00% 24320 -
#11 Short offline Completed without error 00% 24152 -
#12 Short offline Completed without error 00% 23984 -
# smartctl -a /dev/sdb