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为了提高DMDSC集群运行速度和节点之间通信协调的效率#xff0c;需要将运行在机械盘上的dcr和vote磁盘替换到SSD高效磁盘上。将原来200M的dcr和vote机械磁盘#xff0c;换成500M的SSD高效磁盘。
磁盘替换规划信息如下所示#xff1a; 信息说明 替…DMDSC更换DCR和VOTE磁盘
为了提高DMDSC集群运行速度和节点之间通信协调的效率需要将运行在机械盘上的dcr和vote磁盘替换到SSD高效磁盘上。将原来200M的dcr和vote机械磁盘换成500M的SSD高效磁盘。
磁盘替换规划信息如下所示 信息说明 替换前 替换后 dcr和vote磁盘信息 dcr磁盘/dev/raw/raw1 vote磁盘/dev/raw/raw2 dcr磁盘/dev/raw/raw5 vote磁盘/dev/raw/raw6
1、查询替换前DMDSC磁盘信息
dmdbadm1:/dev/raw$ pwd
/dev/raw
dmdbadm1:/dev/raw$ ls -l
total 0
crw-rw---- 1 dmdba dinstall 162, 1 Aug 8 10:04 raw1
crw-rw---- 1 dmdba dinstall 162, 2 Aug 8 13:23 raw2
crw-rw---- 1 dmdba dinstall 162, 3 Aug 8 13:20 raw3
crw-rw---- 1 dmdba dinstall 162, 4 Aug 8 11:20 raw4
crw-rw---- 1 root disk 162, 0 Aug 8 10:04 rawctl
dmdbadm1:/dev/raw$
2、查询DMDSC磁盘属性
cd /home/dmdba/dmdbms/bin
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
ASMlistdisks /dev/raw
[/dev/raw/raw4]: used ASM disk, name:[DMASMDATA0], size:[38510M], group_id:[1], disk_id:[0]
[/dev/raw/raw3]: used ASM disk, name:[DMASMLOG0], size:[2047M], group_id:[0], disk_id:[0]
[/dev/raw/raw2]: used ASM disk, name:[DMASMvote], size:[200M], group_id:[125], disk_id:[0]
[/dev/raw/raw1]: used ASM disk, name:[DMASMdcr], size:[200M], group_id:[126], disk_id:[0]
/dev/raw/raw1和/dev/raw/raw2各200M是我们需要替换的磁盘。
显示path路径下面所有磁盘的信息分为三种类型
1normal disk普通磁盘
2unused asmdisk初始化未使用的asmdisk
3used asmdisk已经使用的 asmdisk。
3、校验DCR磁盘状态
cd /home/dmdba/dmdbms/bin
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
ASMcheck dcrdisk /dev/raw/raw1
ASMCMD check DCRDISK success.
Used time: 6.541(ms).
ASM
4、导出 DCR 的配置文件
ASMexport dcrdisk /dev/raw/raw1 to /tmp/dmdcr_cfg.ini
ASMCMD export DCRDISK success.
Used time: 7.290(ms).
ASM
导出的内容就是dmdcr_cfg.ini文件中的内容。
5、查看DCR信息
SQL select * from v$dcr_info;
LINEID VERSION N_GROUP VTD_PATH UDP_FLAG UDP_OGUID DCR_PATH
---------- ----------- ----------- ------------- ----------- -------------------- -------------
1 259 3 /dev/raw/raw2 0 63635 /dev/raw/raw1
6、查看DMDSC集群节点信息
SQL select * from v$dsc_ep_info;
LINEID EP_NAME EP_SEQNO EP_GUID EP_TIMESTAMP EP_MODE EP_STATUS
---------- ------- ----------- -------------------- -------------------- ------------ ---------
1 DMOA0 0 408343545 408347646 Control Node OK
2 DMOA1 1 408349893 408353986 Normal Node OK
7、查看ASM磁盘组信息
SQL select * from v$asmgroup;
LINEID GROUP_ID GROUP_NAME N_DISK AU_SIZE EXTENT_SIZE TOTAL_SIZE FREE_SIZE TOTAL_FILE_NUM
---------- ----------- ---------- ----------- ----------- ----------- ----------- ----------- --------------
1 0 DMLOG 1 1048576 4 2047 1012 6
2 1 DMDATA 1 1048576 4 38510 38052 21
3 125 VOTE 1 1048576 4 200 176 2
4 126 DCR 1 1048576 4 200 176 2
8、新增加两块磁盘
两块磁盘分别是sdc和sdd。如何给两个节点增加两块共享磁盘不同服务器和操作系统方法不同此处不作详细说明。新增磁盘前建议将DMCSS服务停止把相关配置文件都备份一下。
1输入fdisk /dev/sdc
2依次输入n---p---1---回车---回车---回车完成第一块磁盘划分
3输入fdisk /dev/sdd
4依次输入n---p---1---回车---回车---回车完成第二块磁盘划分
9、编辑/etc/udev/rules.d/60-raw.rules文件
编辑/etc/udev/rules.d/60-raw.rules文件两个节点都要添加。
增加以下语句
--add disk 20210808
ACTIONadd,KERNELsdc1,RUN/bin/raw /dev/raw/raw5 %N
--add disk 20210808
ACTIONadd,KERNELsdd1,RUN/bin/raw /dev/raw/raw6 %N
--ACTIONadd,KERNELraw[1-4],OWNERdmdba,GROUPdinstall,MODE660
ACTIONadd,KERNELraw[1-6],OWNERdmdba,GROUPdinstall,MODE660
10、执行start_udev
完成裸设备绑定两个节点都要执行。
#partprobe /dev/sdc
#partprobe /dev/sdd
#/sbin/udevadm control --reload-rules
#udevadm trigger --actionadd
#/sbin/udevadm trigger --typedevices --actionchange
11、查看裸设备大小
可以通过blockdev --getsize64 /dev/raw/raw5raw6命令查看裸设备大小。
12、查看新增加的磁盘
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
DMASMCMD V8
ASMlistdisks /dev/raw/
[/dev/raw//raw3]: used ASM disk, name:[DMASMLOG0], size:[2047M], group_id:[0], disk_id:[0]
[/dev/raw//raw4]: used ASM disk, name:[DMASMDATA0], size:[38510M], group_id:[1], disk_id:[0]
[/dev/raw//raw6]: normal disk
[/dev/raw//raw5]: normal disk
[/dev/raw//raw2]: used ASM disk, name:[DMASMvote], size:[200M], group_id:[125], disk_id:[0]
[/dev/raw//raw1]: used ASM disk, name:[DMASMdcr], size:[200M], group_id:[126], disk_id:[0]
Used time: 32.893(ms).
ASM
新的磁盘增加完成后需要把两个节点的/etc/udev/rules.d/60-raw.rules文件中关于/dev/ra/raw1和/dev/raw/raw2部分注销或删除。在对以上配置文件进行修改前建议对文件进行备份。
13、修改改dmdcr.ini和dmdcr_cfg.ini文件
两个DSC 节点的配置文件都需要修改。修改DCR_VTD_PATH和DMDCR_PATH参数。
dmdbadm1:/home/dmdba/dmdbms/data$ head -4 dmdcr_cfg.ini
DCR_N_GRP 3
##DCR_VTD_PATH /dev/raw/raw2
DCR_VTD_PATH /dev/raw/raw6
DCR_OGUID 63635
dmdbadm1:/home/dmdba/dmdbms/data$ dmdbadm1:/home/dmdba/dmdbms/data$ head -4 dmdcr.ini
DMDCR_PATH/dev/raw/raw5
DMDCR_MAL_PATH/home/dmdba/dmdbms/data/dmasvrmal.ini #dmasmsvr使用的MAL配置文件路径
DMDCR_SEQNO0
#ASM重启参数命令行方式启动
dmdbadm1:/home/dmdba/dmdbms/data$
14、初始化新磁盘
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
DMASMCMD V8
ASMcreate dcrdisk /dev/raw/raw5 dcr
[Trace]The ASM initialize dcrdisk /dev/raw/raw5 to name DMASMdcr
Used time: 45.292(ms). ASMcreate votedisk /dev/raw/raw6 vote
[Trace]The ASM initialize votedisk /dev/raw/raw6 to name DMASMvote
Used time: 28.899(ms).
ASM ASMinit dcrdisk /dev/raw/raw5 from /home/dmdba/dmdbms/data/dmdcr_cfg.ini identified by root
[Trace]DG 126 allocate 4 extents for file 0xfe000002.
Used time: 133.976(ms). ASMinit votedisk /dev/raw/raw6 from /home/dmdba/dmdbms/data/dmdcr_cfg.ini
[Trace]DG 125 allocate 4 extents for file 0xfd000002.
Used time: 46.068(ms).
ASM
15、启动DMCSS
节点一
dmdbadm1:/home/dmdba/dmdbms/bin$ ./DmCSSServiceCSS0 start
Starting DmCSSServiceCSS0: [ OK ]
dmdbadm1:/home/dmdba/dmdbms/bin$
节点二
dmdbadm2:/home/dmdba/dmdbms/bin$ ./DmCSSServiceCSS1 start
Starting DmCSSServiceCSS1: [ OK ]
dmdbadm2:/home/dmdba/dmdbms/bin$
DMCSS启动完成后如果配置了DMASMRV和DMSERVER自动启动会自动启动着两个服务。如果没有配置。可以通过DMCSSM工具启动着两个服务。
启动DMCSSM工具的命令如下所示
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmcssm INI_PATH/home/dmdba/dmdbms/data/dmcssm.ini
16、查看DCR信息
SQL select * from v$dcr_info;
LINEID VERSION N_GROUP VTD_PATH UDP_FLAG UDP_OGUID DCR_PATH
---------- ----------- ----------- ------------- ----------- -------------------- -------------
1 259 3 /dev/raw/raw6 0 63635 /dev/raw/raw5
used time: 5.598(ms). Execute id is 200.
SQL
17、查看节点信息
SQL select * from v$dsc_ep_info;
LINEID EP_NAME EP_SEQNO EP_GUID EP_TIMESTAMP EP_MODE EP_STATUS
---------- ------- ----------- -------------------- -------------------- ------------ ---------
1 DMOA0 0 422552337 422552854 Control Node OK
2 DMOA1 1 422557455 422557964 Normal Node OK
used time: 1.842(ms). Execute id is 201.
SQL
18、查看ASM磁盘组信息
SQL select * from v$asmgroup;
LINEID GROUP_ID GROUP_NAME N_DISK AU_SIZE EXTENT_SIZE TOTAL_SIZE FREE_SIZE TOTAL_FILE_NUM
---------- ----------- ---------- ----------- ----------- ----------- ----------- ----------- --------------
1 0 DMLOG 1 1048576 4 2047 1012 6
2 1 DMDATA 1 1048576 4 38510 38036 25
3 125 VOTE 1 1048576 4 511 484 2
4 126 DCR 1 1048576 4 511 484 2
used time: 49.498(ms). Execute id is 202.
SQL
磁盘已经替换成功两个磁盘都是500M。
19、查询DMDSC磁盘属性
cd /home/dmdba/dmdbms/bin
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
DMASMCMD V8
ASMlistdisks /dev/raw
[/dev/raw/raw3]: used ASM disk, name:[DMASMLOG0], size:[2047M], group_id:[0], disk_id:[0]
[/dev/raw/raw6]: used ASM disk, name:[DMASMvote], size:[511M], group_id:[125], disk_id:[0]
[/dev/raw/raw4]: used ASM disk, name:[DMASMDATA0], size:[38510M], group_id:[1], disk_id:[0]
[/dev/raw/raw5]: used ASM disk, name:[DMASMdcr], size:[511M], group_id:[126], disk_id:[0]
Used time: 45.829(ms).
ASM
20、校验替换后的DCR磁盘
dmdbadm1:/home/dmdba/dmdbms/bin$ ./dmasmcmd
DMASMCMD V8
ASMcheck dcrdisk /dev/raw/raw5
ASMCMD check DCRDISK success.
Used time: 6.665(ms).
ASM
