今天收信時，在信箱中有一封標題為 SMART error (OfflineUncorrectableSector) 的信件，內文為
[@more@]看起來似乎是 sdb 這一顆硬碟有問題，經仔細檢測後，果然是有問題，可以準備更換硬碟了。
# smartctl -H /dev/sdb
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.18.1.el6.x86_64] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
# smartctl -l selftest /dev/sdb
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-358.18.1.el6.x86_64] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== 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 Short offline Completed: read failure 90% 36469 353066
# 2 Vendor (0x50) Aborted by host 10% 24707 –
# 3 Short offline Completed without error 00% 24706 –
# 4 Vendor (0x50) Completed without error 00% 24704 –
# 5 Short offline Completed without error 00% 24704 –
# 6 Vendor (0x50) Completed without error 00% 24703 –
# 7 Short offline Completed without error 00% 24703 –
# 8 Vendor (0x50) Completed without error 00% 24677 –
# 9 Short offline Completed without error 00% 24676 –
#10 Vendor (0x50) Completed without error 00% 24662 –
#11 Short offline Completed without error 00% 24662 –