硬盘(PV) → 卷组(VG) → 逻辑卷(LV) → 文件系统 → 挂载
1、创建三块硬盘，并创建物理卷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 nvme1n1259:4010G0disk nvme2n1259:5010G0disk nvme3n1259:6010G0disk[root@ip-172-31-26-146 ~]# pvcreate /dev/nvme1n1Physical volume"/dev/nvme1n1"successfully created.[root@ip-172-31-26-146 ~]# pvcreate /dev/nvme2n1Physical volume"/dev/nvme2n1"successfully created.[root@ip-172-31-26-146 ~]# pvcreate /dev/nvme3n1Physical volume"/dev/nvme3n1"successfully created.查看pv
[root@ip-172-31-26-146 ~]# pvdisplay"/dev/sdb"is a new physical volume of"10.00 GiB"--- NEW Physical volume --- PV Name /dev/sdb VG Name PV Size10.00GiB Allocatable NO PE Size0Total PE0Free PE0Allocated PE0PV UUID kQTC2S-gbEm-2DXQ-bsnF-bzgU-xkSv-lZUm1b"/dev/sdc"is a new physical volume of"10.00 GiB"--- NEW Physical volume --- PV Name /dev/sdc VG Name PV Size10.00GiB Allocatable NO PE Size0Total PE0Free PE0Allocated PE0PV UUID hxV4vZ-7evZ-gNwv-DffZ-SUbb-kpod-ReAwsn"/dev/sdd"is a new physical volume of"10.00 GiB"--- NEW Physical volume --- PV Name /dev/sdd VG Name PV Size10.00GiB Allocatable NO PE Size0Total PE0Free PE0Allocated PE0PV UUID tk601b-MPVD-smmn-HYVS-XzJO-CQ3Y-XYNG4x2、创建卷组vg
[root@ip-172-31-26-146 ~]# vgcreate vg_data /dev/sdb /dev/sdc /dev/sddVolume group"vg_data"successfully created[root@ip-172-31-26-146 ~]# vgdisplay--- Volume group --- VG Name vg_data System ID Format lvm2 Metadata Areas3Metadata Sequence No1VG Access read/write VG Status resizable MAX LV0Cur LV0Open LV0Max PV0Cur PV3Act PV3VG Size<29.99GiB PE Size4.00MiB Total PE7677Alloc PE / Size0/0Free PE / Size7677/<29.99GiB VG UUID gmOCDp-YtQR-PmF5-MFcc-XWkv-BfAC-WfjSK43、通过卷组vg创建逻辑卷lvs
[root@ip-172-31-26-146 ~]# lvcreate -n lv_data -l 100%FREE vg_dataLogical volume"lv_data"created.[root@ip-172-31-26-146 ~]# lvsLV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert lv_data vg_data -wi-a-----<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 0LV Size<29.99GiB Current LE7677Segments3Allocation inherit Read ahead sectors auto - currentlysetto256Block device253:0格式化逻辑卷并查看逻辑卷blkid
[root@ip-172-31-26-146 ~]# blkid/dev/nvme0n1p1:LABEL="/"UUID="1d710364-8204-4eaa-a51c-4ef0c0aff5a4"BLOCK_SIZE="4096"TYPE="xfs"PARTLABEL="Linux"PARTUUID="37a1e0f6-732e-42dc-a824-94ef88305d7f"/dev/nvme0n1p128:SEC_TYPE="msdos"UUID="C883-7C08"BLOCK_SIZE="512"TYPE="vfat"PARTLABEL="EFI System Partition"PARTUUID="e8f2bc2a-e35e-4b31-a6f8-0d5c8468ce3a"/dev/nvme0n1p127:PARTLABEL="BIOS Boot Partition"PARTUUID="4d550917-4496-437d-829b-f48bc9d8b13f"/dev/nvme3n1:UUID="tk601b-MPVD-smmn-HYVS-XzJO-CQ3Y-XYNG4x"TYPE="LVM2_member"/dev/nvme2n1:UUID="hxV4vZ-7evZ-gNwv-DffZ-SUbb-kpod-ReAwsn"TYPE="LVM2_member"/dev/nvme1n1:UUID="kQTC2S-gbEm-2DXQ-bsnF-bzgU-xkSv-lZUm1b"TYPE="LVM2_member"[root@ip-172-31-26-146 ~]# mkfs.xfs /dev/vg_data/lv_datameta-data=/dev/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=0[root@ip-172-31-26-146 ~]# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS nvme0n1259:0040G0disk ├─nvme0n1p1259:1040G0part / ├─nvme0n1p127259:201M0part └─nvme0n1p128259:3010M0part /boot/efi nvme1n1259:4010G0disk └─vg_data-lv_data253:0030G0lvm nvme2n1259:5010G0disk └─vg_data-lv_data253:0030G0lvm nvme3n1259:6010G0disk └─vg_data-lv_data253:0030G0lvm[root@ip-172-31-26-146 ~]# blkid/dev/nvme0n1p1:LABEL="/"UUID="1d710364-8204-4eaa-a51c-4ef0c0aff5a4"BLOCK_SIZE="4096"TYPE="xfs"PARTLABEL="Linux"PARTUUID="37a1e0f6-732e-42dc-a824-94ef88305d7f"/dev/nvme0n1p128:SEC_TYPE="msdos"UUID="C883-7C08"BLOCK_SIZE="512"TYPE="vfat"PARTLABEL="EFI System Partition"PARTUUID="e8f2bc2a-e35e-4b31-a6f8-0d5c8468ce3a"/dev/nvme3n1:UUID="tk601b-MPVD-smmn-HYVS-XzJO-CQ3Y-XYNG4x"TYPE="LVM2_member"/dev/nvme2n1:UUID="hxV4vZ-7evZ-gNwv-DffZ-SUbb-kpod-ReAwsn"TYPE="LVM2_member"/dev/nvme1n1:UUID="kQTC2S-gbEm-2DXQ-bsnF-bzgU-xkSv-lZUm1b"TYPE="LVM2_member"/dev/nvme0n1p127:PARTLABEL="BIOS Boot Partition"PARTUUID="4d550917-4496-437d-829b-f48bc9d8b13f"/dev/mapper/vg_data-lv_data:UUID="56578315-05a8-4a01-a882-c90cfd977a6c"BLOCK_SIZE="512"TYPE="xfs"自动挂载逻辑卷lvs
[root@ip-172-31-26-146 ~]# vim /etc/fstabUUID=56578315-05a8-4a01-a882-c90cfd977a6c /data/lvs xfs defaults,defaults00[root@ip-172-31-26-146 ~]# mkdir /data/lvs[root@ip-172-31-26-146 ~]# mount /data/lvs[root@ip-172-31-26-146 ~]#[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 ~]# mount -a
