Centos7怎么使用SSM管理LVM卷

ssm全称Spring+SpringMVC+MyBatis，是目前比较主流的Java EE企业级框架，适用于搭建各种大型的企业级应用系统。ssm还可指“软系统方法论”，是一项运用系统思考解决非系统问题的定性研究技术。

环境

• Centos7.7 Minimal
• system-storage-manager 0.4-9

安装SSM

[root@localhost~]#yum-yinstallsystem-storage-manager

列出设备、卷等信息

使用ssm list 显示所有检测到的设备、池、卷和快照的信息：

[root@localhost~]#ssmlist-----------------------------------------------------------DeviceFreeUsedTotalPoolMountpoint-----------------------------------------------------------/dev/sda40.00GB/dev/sda11.00GB/boot/dev/sda24.00MB38.99GB39.00GBcentos/dev/sdb2.00GB/dev/sdc2.00GB/dev/sdd2.00GB-------------------------------------------------------------------------------------------------------------PoolTypeDevicesFreeUsedTotal--------------------------------------------------centoslvm14.00MB38.99GB39.00GB----------------------------------------------------------------------------------------------------------------------------------------VolumePoolVolumesizeFSFSsizeFreeTypeMountpoint--------------------------------------------------------------------------------------/dev/centos/rootcentos36.99GBxfs36.97GB34.44GBlinear//dev/centos/swapcentos2.00GBlinear/dev/sda11.00GBxfs1014.00MB864.65MB/boot--------------------------------------------------------------------------------------[root@localhost~]#

可以使用ssm list –help查询帮助信息。

创建新的池、逻辑卷、和文件系统

使用/dev/sdb,/dev/sdc,/dev/sdd三块硬盘创建vg0池，创建lv1逻辑卷，大小为1G，格式化为xfs文件系统格式，挂载到/mnt/volume1目录。

#创建挂载目录[root@localhost~]#mkdir/mnt/volume1#创建逻辑卷[root@localhost~]#ssmcreate-s1G-nlv1-pvg0--fstypexfs/dev/sd{b,c,d}/mnt/volume1Physicalvolume"/dev/sdb"successfullycreated.Physicalvolume"/dev/sdc"successfullycreated.Physicalvolume"/dev/sdd"successfullycreated.Volumegroup"vg0"successfullycreatedLogicalvolume"lv1"created.meta-data=/dev/vg0/lv1isize=512agcount=4,agsize=65536blks=sectsz=512attr=2,projid32bit=1=crc=1finobt=0,sparse=0data=bsize=4096blocks=262144,imaxpct=25=sunit=0swidth=0blksnaming=version2bsize=4096ascii-ci=0ftype=1log=internallogbsize=4096blocks=2560,version=2=sectsz=512sunit=0blks,lazy-count=1realtime=noneextsz=4096blocks=0,rtextents=0#查看是否挂载[root@localhost~]#df-hFilesystemSizeUsedAvailUse%Mountedondevtmpfs898M0898M0%/devtmpfs910M0910M0%/dev/shmtmpfs910M9.6M901M2%/runtmpfs910M0910M0%/sys/fs/cgroup/dev/mapper/centos-root37G2.6G35G7%//dev/sda11014M150M865M15%/boottmpfs182M0182M0%/run/user/0/dev/mapper/vg0-lv11014M33M982M4%/mnt/volume1

fstype选项支持的文件类型，目前支持的有：

• ext3
• ext4
• xfs
• btrfs

-s选项指定逻辑卷的大小。

-n选项指定指定逻辑卷的名称

-p选项需要使用哪一个池，如果池不存在，会创建池。

/dev/sd{b,c,d}使用/dev/sdb , /dev/sdc ,/dev/sdd这三个磁盘。

扩展逻辑卷

ssm resize命令可以调整卷的大小。下面的例子是给lv1逻辑卷增加2G空间，总空间为3G。

[root@localhost~]#ssmresize-s+2Gvg0/lv1Sizeoflogicalvolumevg0/lv1changedfrom1.00GiB(256extents)to3.00GiB(768extents).Logicalvolumevg0/lv1successfullyresized.[root@localhost~]#df-hFilesystemSizeUsedAvailUse%Mountedondevtmpfs898M0898M0%/devtmpfs910M0910M0%/dev/shmtmpfs910M9.6M901M2%/runtmpfs910M0910M0%/sys/fs/cgroup/dev/mapper/centos-root37G2.6G35G7%//dev/sda11014M150M865M15%/boottmpfs182M0182M0%/run/user/0/dev/mapper/vg0-lv13.0G33M3.0G2%/mnt/volume1

创建快照

为lv1逻辑卷创建快照

[root@localhost~]#ssmsnapshot/dev/vg0/lv1Roundingupsizetofullphysicalextent412.00MiBLogicalvolume"snap20200325T195111"created.[root@localhost~]#ssmlistsnap------------------------------------------------------------------------SnapshotOriginPoolVolumesizeUsedType------------------------------------------------------------------------/dev/vg0/snap20200325T195111lv1vg0412.00MB0.00KBlinear

删除卷、池

在这里删除卷和池。首先要卸载分区。

[root@localhost~]#umount/mnt/volume1/#删除vg0池和lv1卷[root@localhost~]#ssmremovevg0Doyoureallywanttoremovevolumegroup"vg0"containing2logicalvolumes?[y/n]:yDoyoureallywanttoremoveactiveoriginlogicalvolumevg0/lv1with1snapshot(s)?[y/n]:yLogicalvolume"snap20200325T195111"successfullyremovedLogicalvolume"lv1"successfullyremovedVolumegroup"vg0"successfullyremoved

然后从物理卷里面把/dev/sdb,/dev/sdc,/dev/sdd移除掉。

[root@localhost~]#pvremove/dev/sd{b,c,d}Labelsonphysicalvolume"/dev/sdb"successfullywiped.Labelsonphysicalvolume"/dev/sdc"successfullywiped.Labelsonphysicalvolume"/dev/sdd"successfullywiped.