linux系统下创建lvm挂载到指定目录的操作步骤

2023-09-16 08:36:05 72

1、背景

在企业中有时我们为方便安装软件、数据的管理，需要把安装软件、数据放到固定目录下，磁盘满了方便扩展，这里假如需要一个/data目录存放数据，并单独进行挂载。

2、操作步骤

2.1 划分磁盘

2.2创建PV

[root@centos-6~]#pvcreate/dev/sdb1
Physicalvolume"/dev/sdb1"successfullycreated

扫描系统PV可以使用pvscan查看新建的PV

[root@centos-6~]#pvscan
PV/dev/sda2VGVolGrouplvm2[19.51GiB/0free]
PV/dev/sdb1lvm2[10.00GiB]
Total:2[29.51GiB]/inuse:1[19.51GiB]/innoVG:1[10.00GiB]

2.3创建VG

[root@centos-6~]#vgcreatevgtest/dev/sdb1
Volumegroup"vgtest"successfullycreated

注释：vgtest为VG的名称

扫描vg

[root@centos-6~]#vgscan
Readingallphysicalvolumes.Thismaytakeawhile...
Foundvolumegroup"vgtest"usingmetadatatypelvm2
Foundvolumegroup"VolGroup"usingmetadatatypelvm2

查看vg

[root@centos-6~]#vgdisplay
---Volumegroup---
VGNamevgtest
SystemID
Formatlvm2
MetadataAreas1
MetadataSequenceNo1
VGAccessread/write
VGStatusresizable
MAXLV0
CurLV0
OpenLV0
MaxPV0
CurPV1
ActPV1
VGSize10.00GiB
PESize4.00MiB
TotalPE2560
AllocPE/Size0/0
FreePE/Size2560/10.00GiB
VGUUID59Z2ML-CEzB-PivW-zNq9-2kbv-hscJ-drFdR9

---Volumegroup---
VGNameVolGroup
SystemID
Formatlvm2
MetadataAreas1
MetadataSequenceNo3
VGAccessread/write
VGStatusresizable
MAXLV0
CurLV2
OpenLV2
MaxPV0
CurPV1
ActPV1
VGSize19.51GiB
PESize4.00MiB
TotalPE4994
AllocPE/Size4994/19.51GiB
FreePE/Size0/0
VGUUIDUPJDXo-8RjG-muVj-nVnt-hjXI-aZVv-uGGc2x

2.4创建LV

[root@centos-6~]#lvcreate-l2560-nlvdatavgtest
Logicalvolume"lvdata"created.

2.5格式化创建的LV

[root@centos-6~]#mkfs-text4/dev/vgtest/lvdata
mke2fs1.41.12(17-May-2010)
文件系统标签=
操作系统:Linux
块大小=4096(log=2)
分块大小=4096(log=2)
Stride=0blocks,Stripewidth=0blocks
655360inodes,2621440blocks
131072blocks(5.00%)reservedforthesuperuser
第一个数据块=0
Maximumfilesystemblocks=2684354560
80blockgroups
32768blockspergroup,32768fragmentspergroup
8192inodespergroup
Superblockbackupsstoredonblocks:
32768,98304,163840,229376,294912,819200,884736,1605632

正在写入inode表:完成

Creatingjournal(32768blocks):完成
Writingsuperblocksandfilesystemaccountinginformation:完成
Thisfilesystemwillbeautomaticallycheckedevery39mountsor
180days,whichevercomesfirst.Usetune2fs-cor-itooverride.

2.6创建目录并挂载

创建目录：

[root@centos-6~]#mkdir-p/data

挂载目录

[root@centos-6~]#mount/dev/vgtest/lvdata/data

查看

[root@centos-6~]#df-h
FilesystemSizeUsedAvailUse%Mountedon
/dev/mapper/VolGroup-lv_root18G4.9G12G30%/
tmpfs125M72K125M1%/dev/shm
/dev/sda1477M37M416M9%/boot
/dev/mapper/vgtest-lvdata9.8G23M9.2G1%/data

2.7设置开机挂载

[root@centos-6~]#vi/etc/fstab
#
#/etc/fstab
#CreatedbyanacondaonSatFeb300:44:142018
#
#Accessiblefilesystems,byreference,aremaintainedunder'/dev/disk'
#Seemanpagesfstab(5),findfs(8),mount(8)and/orblkid(8)formoreinfo
#
/dev/mapper/VolGroup-lv_root/ext4defaults11
UUID=49120546-3d8d-4b2e-8559-448613dc072a/bootext4defaults12
/dev/mapper/VolGroup-lv_swapswapswapdefaults00
tmpfs/dev/shmtmpfsdefaults00
devpts/dev/ptsdevptsgid=5,mode=62000
sysfs/syssysfsdefaults00
proc/procprocdefaults00
/dev/mapper/vgtest-lvdata/dataext4defaults00

总结

以上所述是小编给大家介绍的linux系统下创建lvm挂载到指定目录的操作步骤，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！