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1、查看lvs信息

[root@ip-172-31-26-146 ~]# df -hFilesystem Size Used Avail Use% Mounted on devtmpfs4.0M04.0M0% /dev tmpfs3.9G4.0K3.9G1% /dev/shm tmpfs1.6G 632K1.6G1% /run /dev/nvme0n1p1 40G 11G 30G26% / tmpfs3.9G03.9G0% /tmp /dev/nvme0n1p128 10M1.3M8.7M13% /boot/efi overlay 40G 11G 30G26% /var/lib/docker/overlay2/84699b7470c48b0c4a1cb8b91b868be21f96c388de173f25df9ac741be7d0d0e/merged tmpfs 782M0782M0% /run/user/1000 /dev/mapper/vg_data-lv_data 30G 247M 30G1% /data/lvs[root@ip-172-31-26-146 ~]# lvsLV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv_data vg_data -wi-ao----<29.99g[root@ip-172-31-26-146 ~]# lvdisplay--- Logical volume --- LV Path /dev/vg_data/lv_data LV Name lv_data VG Name vg_data LV UUID aoI2fv-LoQS-duKk-t567-JW4f-fF6j-4lyV5x LV Write Access read/write LV Creation host,timeip-172-31-26-146.us-east-2.compute.internal,2025-12-23 03:14:56 +0000 LV Status available# open 1LV Size<29.99GiB Current LE7677Segments3Allocation inherit Read ahead sectors auto - currentlysetto256Block device253:0

2、纵向扩充lvs空间(将组成lvs的所有的pv都扩充同等的大小5G)
1）查看现有pv

[root@ip-172-31-26-146 ~]# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS nvme0n1259:0040G0disk ├─nvme0n1p1259:1040G0part / ├─nvme0n1p127259:201M0part └─nvme0n1p128259:3010M0part /boot/efi nvme1n1259:4015G0disk └─vg_data-lv_data253:0030G0lvm /data/lvs nvme2n1259:5015G0disk └─vg_data-lv_data253:0030G0lvm /data/lvs nvme3n1259:6015G0disk └─vg_data-lv_data253:0030G0lvm /data/lvs

2）扩展物理卷pv

[root@ip-172-31-26-146 ~]# pvsPV VG Fmt Attr PSize PFree /dev/sdb vg_data lvm2 a--<10.00g0/dev/sdc vg_data lvm2 a--<10.00g0/dev/sdd vg_data lvm2 a--<10.00g0[root@ip-172-31-26-146 ~]# pvresize /dev/sdbPhysical volume"/dev/sdb"changed1physical volume(s)resized or updated /0physical volume(s)not resized[root@ip-172-31-26-146 ~]# pvresize /dev/sdcPhysical volume"/dev/sdc"changed1physical volume(s)resized or updated /0physical volume(s)not resized[root@ip-172-31-26-146 ~]# pvresize /dev/sddPhysical volume"/dev/sdd"changed1physical volume(s)resized or updated /0physical volume(s)not resized[root@ip-172-31-26-146 ~]# pvsPV VG Fmt Attr PSize PFree /dev/sdb vg_data lvm2 a--<15.00g5.00g /dev/sdc vg_data lvm2 a--<15.00g5.00g /dev/sdd vg_data lvm2 a--<15.00g5.00g

3）扩展逻辑卷lvs
指定扩充

lvcreate -n lv_data -L 40G vg_data

[root@ip-172-31-26-146 ~]# lvextend -l +100%FREE /dev/vg_data/lv_dataSize of logical volume vg_data/lv_data changed from<29.99GiB(7677extents)to<44.99GiB(11517extents). Logical volume vg_data/lv_data successfully resized.[root@ip-172-31-26-146 ~]# lvsLV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv_data vg_data -wi-ao----<44.99g[root@ip-172-31-26-146 ~]# df -hFilesystem Size Used Avail Use% Mounted on devtmpfs4.0M04.0M0% /dev tmpfs3.9G4.0K3.9G1% /dev/shm tmpfs1.6G 632K1.6G1% /run /dev/nvme0n1p1 40G 11G 30G26% / tmpfs3.9G03.9G0% /tmp /dev/nvme0n1p128 10M1.3M8.7M13% /boot/efi overlay 40G 11G 30G26% /var/lib/docker/overlay2/84699b7470c48b0c4a1cb8b91b868be21f96c388de173f25df9ac741be7d0d0e/merged tmpfs 782M0782M0% /run/user/1000 /dev/mapper/vg_data-lv_data 30G 247M 30G1% /data/lvs

刷新逻辑卷空间大小
ext4格式的刷新命令resize2fs /dev/vg_data/lv_data

[root@ip-172-31-26-146 ~]# xfs_growfs /data/lvs/meta-data=/dev/mapper/vg_data-lv_dataisize=512agcount=16,agsize=491328blks=sectsz=512attr=2,projid32bit=1=crc=1finobt=1,sparse=1,rmapbt=0=reflink=1bigtime=1inobtcount=1data=bsize=4096blocks=7861248,imaxpct=25=sunit=1swidth=1blks naming=version2bsize=4096ascii-ci=0,ftype=1log=internal logbsize=4096blocks=16384,version=2=sectsz=512sunit=1blks, lazy-count=1realtime=noneextsz=4096blocks=0,rtextents=0data blocks changed from7861248to11793408[root@ip-172-31-26-146 ~]# df -hFilesystem Size Used Avail Use% Mounted on devtmpfs4.0M04.0M0% /dev tmpfs3.9G4.0K3.9G1% /dev/shm tmpfs1.6G 632K1.6G1% /run /dev/nvme0n1p1 40G 11G 30G26% / tmpfs3.9G03.9G0% /tmp /dev/nvme0n1p128 10M1.3M8.7M13% /boot/efi overlay 40G 11G 30G26% /var/lib/docker/overlay2/84699b7470c48b0c4a1cb8b91b868be21f96c388de173f25df9ac741be7d0d0e/merged tmpfs 782M0782M0% /run/user/1000 /dev/mapper/vg_data-lv_data 45G 355M 45G1% /data/lvs

3、横向扩充lvs空间(在新增一块同等大小的硬盘15G)
1）查看现有pv的大小，并创建一块同等大小的硬盘

[root@ip-172-31-26-146 ~]# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS nvme0n1259:0040G0disk ├─nvme0n1p1259:1040G0part / ├─nvme0n1p127259:201M0part └─nvme0n1p128259:3010M0part /boot/efi nvme1n1259:4015G0disk └─vg_data-lv_data253:0045G0lvm /data/lvs nvme2n1259:5015G0disk └─vg_data-lv_data253:0045G0lvm /data/lvs nvme3n1259:6015G0disk └─vg_data-lv_data253:0045G0lvm /data/lvs nvme4n1259:7015G0disk

2）将新增硬盘创建新的pv

[root@ip-172-31-26-146 ~]# pvcreate /dev/nvme4n1Physical volume"/dev/nvme4n1"successfully created.[root@ip-172-31-26-146 ~]# pvsPV VG Fmt Attr PSize PFree /dev/sdb vg_data lvm2 a--<15.00g0/dev/sdc vg_data lvm2 a--<15.00g0/dev/sdd vg_data lvm2 a--<15.00g0/dev/sde lvm2 ---15.00g15.00g

3）将新创建的pv扩展到需要扩展的vg

[root@ip-172-31-26-146 ~]# vgextend vg_data /dev/sdeVolume group"vg_data"successfully extended[root@ip-172-31-26-146 ~]# vgsVG#PV #LV #SN Attr VSize VFreevg_data410wz--n-59.98g<15.00g

3）将vg所有free的大小都扩展到lv

[root@ip-172-31-26-146 ~]# lvextend -l +100%FREE /dev/vg_data/lv_dataSize of logical volume vg_data/lv_data changed from<44.99GiB(11517extents)to59.98GiB(15356extents). Logical volume vg_data/lv_data successfully resized.[root@ip-172-31-26-146 ~]# lvsLV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv_data vg_data -wi-ao----59.98g

4）查看现有lvs挂载的空间大小，并刷新盘符大小

[root@ip-172-31-26-146 ~]# df -hFilesystem Size Used Avail Use% Mounted on 。。。。 /dev/mapper/vg_data-lv_data 45G 355M 45G1% /data/lvs[root@ip-172-31-26-146 ~]# xfs_growfs /data/lvs/meta-data=/dev/mapper/vg_data-lv_dataisize=512agcount=25,agsize=491328blks=sectsz=512attr=2,projid32bit=1=crc=1finobt=1,sparse=1,rmapbt=0=reflink=1bigtime=1inobtcount=1data=bsize=4096blocks=11793408,imaxpct=25=sunit=1swidth=1blks naming=version2bsize=4096ascii-ci=0,ftype=1log=internal logbsize=4096blocks=16384,version=2=sectsz=512sunit=1blks, lazy-count=1realtime=noneextsz=4096blocks=0,rtextents=0data blocks changed from11793408to15724544[root@ip-172-31-26-146 ~]# df -hFilesystem Size Used Avail Use% Mounted on 。。。。 /dev/mapper/vg_data-lv_data 60G 462M 60G1% /data/lvs