（1）找到可用硬盘
#blkid
/dev/mapper/centos-root: UUID="903b5955-0ba9-4d76-8cb1-5b9e9d6eb9f2" TYPE="xfs"
/dev/sda2: UUID="s61Ldp-VAaR-MwLR-8fa5-wFbQ-ln6l-VZsbkb" TYPE="LVM2_member"
/dev/sda1: UUID="1676224e-9c9f-4350-8661-81c229bb2d88" TYPE="xfs"
/dev/sdb: UUID="Y5TERc-SgYb-ekxZ-P84E-v1Vz-ESfu-XTWBAD" TYPE="LVM2_member"
/dev/sdf: UUID="S6Jmoz-8spp-feJT-dP6g-soVA-iPNW-s91w9a" TYPE="LVM2_member"
/dev/sde: UUID="MKgEN6-3k34-JjwE-Np1O-40zZ-zsac-xGsB2T" TYPE="LVM2_member"
/dev/sdg: UUID="I7xfJC-C1b5-MC3d-J207-6shC-1JRb-gp32Jg" TYPE="LVM2_member"

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(2)找出所有hdd的序列号
shell# smartctl -i /dev/sdc
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-957.27.2.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor: SEAGATE
Product: ST3600057SS
Revision: ES66
Compliance: SPC-3
Rotation Rate: 15000 rpm
Form Factor: 3.5 inches
Logical Unit id: 0x5000c50068e8d0fb
Serial number: 6SL6QWMF
Device type: disk
Transport protocol: SAS (SPL-3)
Local Time is: Wed Dec 11 19:34:16 2019 CST
device is NOT READY (e.g. spun down, busy)
A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.

(3)根据序列号匹配槽位，然后去除可用硬盘，剩下的就是故障硬盘的。
sehll# ./sas2ircu 0 display
LSI Corporation SAS2 IR Configuration Utility.
Version 5.00.00.00 (2010.02.09)
Copyright (c) 2009 LSI Corporation. All rights reserved.

Read configuration has been initiated for controller 0
Controller type : SAS2208_8
BIOS version : 7.39.02.00
Firmware version : 20.00.07.00
Channel description : 1 Serial Attached SCSI
Initiator ID : 0
Maximum physical devices : 255
Concurrent commands supported : 3072
Slot : 5
Segment : 0
Bus : 4
Device : 0
Function : 0
RAID Support : Yes

IR Volume information

IR volume 1
Volume ID : 286
Status of volume : Okay (OKY)
RAID level : RAID1
Size (in MB) : 571250
Physical hard disks :

Device is a Hard disk
Enclosure # : 1
Slot # : 0
State : Optimal (OPT)
Size (in MB)/(in sectors) : 572325/1172123567
Manufacturer : SEAGATE
Model Number : ST3600057SS
Firmware Revision : ES66
Serial No : 6SL6PTCM
Protocol : SAS
Drive Type : SAS_HDD

Device is a Hard disk
Enclosure # : 1
Slot # : 1
State : Optimal (OPT)
Size (in MB)/(in sectors) : 572325/1172123567
Manufacturer : SEAGATE
Model Number : ST3600057SS
Firmware Revision : ES66
Serial No : 6SL74N4F
Protocol : SAS
Drive Type : SAS_HDD

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