一、lvm 数据盘raid 5磁盘扩容
1.1 安装Arcconf 以及lspci命令所需的软件包
将Arcconf-3.00-23488.x86_64.rpm 下载或者复制到 /tmp 下
通过 lspci命令：列出所有的PCI设备信息
lspci命令属于pciutils工具包
执行yum install whatprovides */lspci 或者直接yum -y install pciutils 安装
1.2 查看裸金属的磁盘阵列信息
arcconf getconfig 1 ld （查看控制器 1的磁盘阵列信息）
[root@localhost ~]# arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical Device number 0
Logical Device name : Logical Drive 1
Disk Name : /dev/sdb
Block Size of member drives : 512 Bytes
Array : 0
RAID level : 1
Status of Logical Device : Optimal
Size : 457830 MB
Stripe-unit size : 256 KB
Full Stripe Size : 256 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : /boot/efi 500 MB Partition Number 1 /boot 1024 MB Partition Number 2
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001C2C9E041A27F27AC60F24
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 0 : Present (457862MB, SATA, SSD, Channel:0, Device:0) S45PNA0NC00444
Device 1 : Present (457862MB, SATA, SSD, Channel:0, Device:1) S45PNA0NC00442
Logical Device number 1
Logical Device name : Logical Drive 2
Disk Name : /dev/sdc
Block Size of member drives : 512 Bytes
Array : 1
RAID level : 5
Status of Logical Device : Optimal
Parity Initialization Status : Completed
Size : 1831366 MB
Stripe-unit size : 256 KB
Full Stripe Size : 512 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : Not Applicable
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001CA58EA2ACC77C0FABB034
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 3 : Present (915715MB, SATA, SSD, Channel:0, Device:3) 1933235A894B
Device 4 : Present (915715MB, SATA, SSD, Channel:0, Device:4) 19332359F8B3
Device 5 : Present (915715MB, SATA, SSD, Channel:0, Device:5) 19332359FB98
Command completed successfully.
[root@localhost ~]#记录下SN 信息，以及device的序号
以上截图中显示该机器下有两个磁盘阵列分别是：
device0和device1组成的raid 1，对应分区是/dev/sdbDevice3、device4、device5组成的raid 5,对应分区是/dev/sdc
1.3 查看服务器上所有物理盘信息
arcconf getconfig 1 pd(查控制器1上连接sata盘的信息，可以确认sata盘槽位)
[root@localhost ~]# arcconf getconfig 1 pd
..................................................
Device #6
Device is a Hard drive
State : Ready
Drive has stale RIS data : False
Disk Name : /dev/sda
Block Size : 512 Bytes
Physical Block Size : 4K Bytes
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,6(6:0)
Reported Location : Enclosure Direct Attached, Slot 6(Connector 1:CN1)
Vendor : ATA
Model : Micron_5200_MTFD
Firmware : D1MH027
Serial number : 19332359F39D
World-wide name : 38465695EB81E001
Reserved Size : 32768 KB
Used Size : 0 MB
Unused Size : 915683 MB
Total Size : 915715 MB
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
SSD : Yes
NCQ supported : Supported
NCQ status : Enabled
Boot Type : None
Current Temperature : 28 deg C
Maximum Temperature : 41 deg C
Threshold Temperature : 60 deg C
PHY Count : 1
Drive Configuration Type : Unassigned
Mount Point(s) : Not Mounted
Drive Exposed to OS : True
Sanitize Erase Support : True
Sanitize Lock Freeze Support : True
Sanitize Lock Anti-Freeze Support : True
Sanitize Lock Setting : None
Usage Remaining : 100 percent
Estimated Life Remaining : Not Applicable
SSD Smart Trip Wearout : False
56 Day Warning Present : False
Drive Unique ID : C30143D16E95C57EBAE00891528B0285
Last Failure Reason : No Failure
----------------------------------------------------------------
Device Phy Information
----------------------------------------------------------------
Phy #0
Negotiated Physical Link Rate : 6 Gbps
Negotiated Logical Link Rate : 6 Gbps
Maximum Link Rate : 6 Gbps
----------------------------------------------------------------
Device Error Counters
----------------------------------------------------------------
Aborted Commands : 0
Bad Target Errors : 0
Ecc Recovered Read Errors : 0
Failed Read Recovers : 0
Failed Write Recovers : 0
Format Errors : 0
Hardware Errors : 0
Hard Read Errors : 0
Hard Write Errors : 0
Hot Plug Count : 0
Media Failures : 0
Not Ready Errors : 0
Other Time Out Errors : 0
Predictive Failures : 0
Retry Recovered Read Errors : 0
Retry Recovered Write Errors : 0
Scsi Bus Faults : 0
Sectors Reads : 1249537714
Sectors Written : 1148083105
Service Hours : 211
Channel #2:
Device #2
Device is an Enclosure Services Device
Reported Channel,Device(T:L) : 2,2(2:0)
Enclosure ID : 0
Enclosure Logical Identifier : 58465695EB81E008
Type : SES2
Vendor : UN
Model : Virtual SGPIO
Firmware : 3.21
Status of Enclosure Services Device
Speaker status : Not Available
Command completed successfully.通过arcconf getconfig 1 pd 中显示device 信息列表，device 6是新加入磁盘未加入磁盘阵列，记录下槽位Reported Channel,Device(T:L): 0,6(6:0)
1.4 磁盘扩容到阵列中
在/data 中存放一些文件并记录其MD5值
将磁盘扩容到阵列里：
arcconf modify 1 array 1 expand 0 6
array 1：的1是阵列号 磁盘加在哪个raid里就写对应raid的Array，这里是raid5 对应Array1
arcconf modify 1：的1为controllers found 显示的阵列卡控制器号 咱们服务器只有一个控制器 显示的是1
expand 0 6 是加入磁盘槽位信息
将磁盘扩容到阵列命令，硬盘容量越大，这一步操作的时间就会越长，可以通过 arcconf getconfig 1 ld 查看同步信息：
[root@localhost ~]# arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical Device number 0
Logical Device name : Logical Drive 1
Disk Name : /dev/sdb
Block Size of member drives : 512 Bytes
Array : 0
RAID level : 1
Status of Logical Device : Optimal
Size : 457830 MB
Stripe-unit size : 256 KB
Full Stripe Size : 256 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : /boot/efi 500 MB Partition Number 1 /boot 1024 MB Partition Number 2
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001C2C9E041A27F27AC60F24
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 0 : Present (457862MB, SATA, SSD, Channel:0, Device:0) S45PNA0NC00444
Device 1 : Present (457862MB, SATA, SSD, Channel:0, Device:1) S45PNA0NC00442
Logical Device number 1
Logical Device name : Logical Drive 2
Disk Name : /dev/sdc
Block Size of member drives : 512 Bytes
Array : 1
RAID level : 5
Status of Logical Device : Logical device Reconfiguring(Expanding : 22 %)
Parity Initialization Status : Completed
Size : 1831366 MB
Stripe-unit size : 256 KB
Full Stripe Size : 512 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : Not Applicable
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001CA58EA2ACC77C0FABB034
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 3 : Present (915715MB, SATA, SSD, Channel:0, Device:3) 1933235A894B
Device 4 : Present (915715MB, SATA, SSD, Channel:0, Device:4) 19332359F8B3
Device 5 : Present (915715MB, SATA, SSD, Channel:0, Device:5) 19332359FB98
Command completed successfully.
[root@localhost ~]#
Parity Initialization Status 是Optimal 表示成功加入阵列中，目前960GB SATA SSD,也就是平均1TG磁盘大概要2-3小时
1.5 把磁盘阵列扩容到最大空间
arcconf modify 1 from 1 to max 5 0 3 0 4 0 5 0 6
表示：将控制器1（modify 1）的逻辑卷1（from 1）扩到最大空间，RAID级别是5（max 5），device3-6 的槽位是0 3 0 4 0 5 0 6
通过arcconf getconfig 1 ld 可以看到新的磁盘已经扩容到 /dev/sdc 上，这时候0% 是扩容后，数据均分布过程
1.6 扩容磁盘空间
将sdc 未使用空间扩容到/dev/centos_data/data 上
pvresize /dev/sdc
lvextend -l +100%FREE /dev/centos_data/data
xfs_growfs /dev/centos_data/data
通过比较扩容前后数据md5值可以看出扩容并没有影响数据
二、标准格式数据盘raid 5磁盘扩容
2.1 安装Arcconf 以及lspci命令所需的软件包
将Arcconf-3.00-23488.x86_64.rpm 下载或者复制到 /tmp 下
通过 lspci命令：列出所有的PCI设备信息
lspci命令属于pciutils工具包
执行yum install whatprovides */lspci 或者直接yum -y install pciutils 安装
2.2 查看裸金属的磁盘阵列信息
arcconf getconfig 1 ld （查看控制器 1的磁盘阵列信息）
[root@localhost ~]# arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical Device number 0
Logical Device name : Logical Drive 1
Disk Name : /dev/sdb
Block Size of member drives : 512 Bytes
Array : 0
RAID level : 1
Status of Logical Device : Optimal
Size : 457830 MB
Stripe-unit size : 256 KB
Full Stripe Size : 256 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : /boot/efi 500 MB Partition Number 1 /boot 1024 MB Partition Number 2
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001C2C9E041A27F27AC60F24
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 0 : Present (457862MB, SATA, SSD, Channel:0, Device:0) S45PNA0NC00444
Device 1 : Present (457862MB, SATA, SSD, Channel:0, Device:1) S45PNA0NC00442
Logical Device number 1
Logical Device name : Logical Drive 2
Disk Name : /dev/sdc
Block Size of member drives : 512 Bytes
Array : 1
RAID level : 5
Status of Logical Device : Optimal
Parity Initialization Status : Completed
Size : 1831366 MB
Stripe-unit size : 256 KB
Full Stripe Size : 512 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : Not Applicable
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001CA58EA2ACC77C0FABB034
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 3 : Present (915715MB, SATA, SSD, Channel:0, Device:3) 1933235A894B
Device 4 : Present (915715MB, SATA, SSD, Channel:0, Device:4) 19332359F8B3
Device 5 : Present (915715MB, SATA, SSD, Channel:0, Device:5) 19332359FB98
Command completed successfully.
[root@localhost ~]#记录下SN 信息，以及device的序号
以上截图中显示该机器下有两个磁盘阵列分别是：
device0和device1组成的raid 1，对应分区是/dev/sdbDevice3、device4、device5组成的raid 5,对应分区是/dev/sdc
2.3 查看服务器上所有物理盘信息
arcconf getconfig 1 pd(查控制器1上连接sata盘的信息，可以确认sata盘槽位)
[root@localhost ~]# arcconf getconfig 1 pd
..................................................
Device #6
Device is a Hard drive
State : Ready
Drive has stale RIS data : False
Disk Name : /dev/sda
Block Size : 512 Bytes
Physical Block Size : 4K Bytes
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,6(6:0)
Reported Location : Enclosure Direct Attached, Slot 6(Connector 1:CN1)
Vendor : ATA
Model : Micron_5200_MTFD
Firmware : D1MH027
Serial number : 19332359F39D
World-wide name : 38465695EB81E001
Reserved Size : 32768 KB
Used Size : 0 MB
Unused Size : 915683 MB
Total Size : 915715 MB
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
SSD : Yes
NCQ supported : Supported
NCQ status : Enabled
Boot Type : None
Current Temperature : 28 deg C
Maximum Temperature : 41 deg C
Threshold Temperature : 60 deg C
PHY Count : 1
Drive Configuration Type : Unassigned
Mount Point(s) : Not Mounted
Drive Exposed to OS : True
Sanitize Erase Support : True
Sanitize Lock Freeze Support : True
Sanitize Lock Anti-Freeze Support : True
Sanitize Lock Setting : None
Usage Remaining : 100 percent
Estimated Life Remaining : Not Applicable
SSD Smart Trip Wearout : False
56 Day Warning Present : False
Drive Unique ID : C30143D16E95C57EBAE00891528B0285
Last Failure Reason : No Failure
----------------------------------------------------------------
Device Phy Information
----------------------------------------------------------------
Phy #0
Negotiated Physical Link Rate : 6 Gbps
Negotiated Logical Link Rate : 6 Gbps
Maximum Link Rate : 6 Gbps
----------------------------------------------------------------
Device Error Counters
----------------------------------------------------------------
Aborted Commands : 0
Bad Target Errors : 0
Ecc Recovered Read Errors : 0
Failed Read Recovers : 0
Failed Write Recovers : 0
Format Errors : 0
Hardware Errors : 0
Hard Read Errors : 0
Hard Write Errors : 0
Hot Plug Count : 0
Media Failures : 0
Not Ready Errors : 0
Other Time Out Errors : 0
Predictive Failures : 0
Retry Recovered Read Errors : 0
Retry Recovered Write Errors : 0
Scsi Bus Faults : 0
Sectors Reads : 1249537714
Sectors Written : 1148083105
Service Hours : 211
Channel #2:
Device #2
Device is an Enclosure Services Device
Reported Channel,Device(T:L) : 2,2(2:0)
Enclosure ID : 0
Enclosure Logical Identifier : 58465695EB81E008
Type : SES2
Vendor : UN
Model : Virtual SGPIO
Firmware : 3.21
Status of Enclosure Services Device
Speaker status : Not Available
Command completed successfully.通过arcconf getconfig 1 pd 中显示device 信息列表，device 6是新加入磁盘未加入磁盘阵列，记录下槽位Reported Channel,Device(T:L): 0,6(6:0)
2.4 磁盘扩容到阵列中
在/data 中存放一些文件并记录其MD5值
将磁盘扩容到阵列里：
arcconf modify 1 array 1 expand 0 6
array 1：的1是阵列号 磁盘加在哪个raid里就写对应raid的Array，这里是raid5 对应Array1
arcconf modify 1：的1为controllers found 显示的阵列卡控制器号 咱们服务器只有一个控制器 显示的是1
expand 0 6 是加入磁盘槽位信息
将磁盘扩容到阵列命令，硬盘容量越大，这一步操作的时间就会越长，可以通过 arcconf getconfig 1 ld 查看同步信息：
[root@localhost ~]# arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical Device number 0
Logical Device name : Logical Drive 1
Disk Name : /dev/sdb
Block Size of member drives : 512 Bytes
Array : 0
RAID level : 1
Status of Logical Device : Optimal
Size : 457830 MB
Stripe-unit size : 256 KB
Full Stripe Size : 256 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : /boot/efi 500 MB Partition Number 1 /boot 1024 MB Partition Number 2
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001C2C9E041A27F27AC60F24
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 0 : Present (457862MB, SATA, SSD, Channel:0, Device:0) S45PNA0NC00444
Device 1 : Present (457862MB, SATA, SSD, Channel:0, Device:1) S45PNA0NC00442
Logical Device number 1
Logical Device name : Logical Drive 2
Disk Name : /dev/sdc
Block Size of member drives : 512 Bytes
Array : 1
RAID level : 5
Status of Logical Device : Logical device Reconfiguring(Expanding : 22 %)
Parity Initialization Status : Completed
Size : 1831366 MB
Stripe-unit size : 256 KB
Full Stripe Size : 512 KB
Interface Type : SATA SSD
Device Type : Data
Boot Type : None
Heads : 255
Sectors Per Track : 32
Cylinders : 65535
Caching : Disabled
Mount Points : Not Applicable
LD Acceleration Method : SSD IO Bypass
Volume Unique Identifier : 600508B1001CA58EA2ACC77C0FABB034
--------------------------------------------------------
Array Physical Device Information
--------------------------------------------------------
Device 3 : Present (915715MB, SATA, SSD, Channel:0, Device:3) 1933235A894B
Device 4 : Present (915715MB, SATA, SSD, Channel:0, Device:4) 19332359F8B3
Device 5 : Present (915715MB, SATA, SSD, Channel:0, Device:5) 19332359FB98
Command completed successfully.
[root@localhost ~]#
Parity Initialization Status 是Optimal 表示成功加入阵列中，目前960GB SATA SSD,也就是平均1TG磁盘大概要2-3小时
2.5 把磁盘阵列扩容到最大空间
arcconf modify 1 from 1 to max 5 0 3 0 4 0 5 0 6
表示：将控制器1（modify 1）的逻辑卷1（from 1）扩到最大空间，RAID级别是5（max 5），device3-6 的槽位是0 3 0 4 0 5 0 6
通过arcconf getconfig 1 ld 可以看到新的磁盘已经扩容到 /dev/sdc 上，这时候0% 是扩容后，数据均分布过程
通过partprobe 无法刷新分区，需要重启服务器来刷新分区
2.6 扩容磁盘空间
yum -y install cloud-utils-growpart 使用growpart 命令
growpart /dev/sdb 1
xfs_growfs /dev/sdb1
查看扩容后文件得md5值和扩容前一致
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