点击展示：
1. 点击服务器展示服务器的：cpu（%user,%sys,%iowait,%idle）,memory(Total，used, free,
buffer, cache), IOPS(read request, write request), Througthput(read
kb, write kb)，
we use tgtd 1.0.47 to export a disk and use iscsiadm to load it.
but the ID_SERIAL of this disk is not the same with scsi_id of export disk.
if we use tgtd 1.0.24 it is the same.
using tgtd 1.0.47, export the disk, and show target info like:
Target 1: shadow.qlink3261
System information:
Driver: iser
State: ready
I_T nexus information:
I_T nexus: 1
Initiator: iqn.1994-05.com.redhat:2fe5d8395c2f alias: master
Connection: 0
RDMA IP Address: 172.16.128.102
I_T nexus: 2
Initiator: iqn.1994-05.com.redhat:2fe5d8395c2f alias: master
Connection: 0
RDMA IP Address: 172.16.129.102
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: test1-iscsi-iser
SCSI SN: test1-iscsi-iser
Size: 104858 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: rdwr
Backing store path: /dev/memdiska1
Backing store flags: direct
Account information:
ACL information:
172.16.128.0/24
172.16.129.0/24
after iscsiadm log in, we check the ID_SERIAL of this disk using
“udevadm info --query=all --path=/block/sdb”：
E: ID_SERIAL_RAW=360000000000000000e001000c00000e0
E: ID_SERIAL=360000000000000000e001000c00000e0
E: ID_SERIAL_SHORT=60000000000000000e001000c00000e0
but with tgtd 1.0.24, it is correct:
E: ID_SERIAL_RAW=1test1-iscsi-iser
E: ID_SERIAL=1test1-iscsi-iser
E: ID_SERIAL_SHORT=test1-iscsi-iser
test environment rhel6.2
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