这是我的 lsblk 输出：
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 63.3M 1 loop /snap/core20/1828
loop1 7:1 0 63.3M 1 loop /snap/core20/1852
loop2 7:2 0 67.2M 1 loop /snap/lxd/21835
loop3 7:3 0 91.9M 1 loop /snap/lxd/24061
loop4 7:4 0 49.9M 1 loop /snap/snapd/18357
loop5 7:5 0 49.9M 1 loop /snap/snapd/18596
loop6 7:6 0 3.1G 0 loop /var/tmp
sda 8:0 0 155G 0 disk
├─sda1 8:1 0 1.1G 0 part /boot/efi
└─sda2 8:2 0 138.7G 0 part
└─vg0-root 253:0 0 74G 0 lvm /
sr0 11:0 1 1024M 0 rom
但是当我想将 lvm 大小增加到 sda2 的最大值时，它会显示“无事可做”消息：
root:~# sudo lvresize -tvl +100%FREE /dev/mapper/vg0-root
TEST MODE: Metadata will NOT be updated and volumes will not be (de)activated.
Converted 100%FREE into at most 0 physical extents.
New size (18930 extents) matches existing size (18930 extens).
root:~# sudo lvresize -vl +100%FREE /dev/mapper/vg0-root
Converted 100%FREE into at most 0 physical extents.
New size (18930 extents) matches existing size (18930 extents).
root:~# sudo resize2fs -p /dev/mapper/vg0-root
resize2fs 1.45.5 (07-Jan-2020)
The filesystem is already 19384320 (4k) blocks long. Nothing to do!
vgdisplay 的输出：
# vgdisplay
--- Volume group ---
VG Name vg0
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size <73.95 GiB
PE Size 4.00 MiB
Total PE 18930
Alloc PE / Size 18930 / <73.95 GiB
Free PE / Size 0 / 0
VG UUID anzb9z-z1ML-h0xn-21Eq-WvLn-Pgpl-NwH5OR
更新:
pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name vg0
PV Size <73.95 GiB / not usable 2.98 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 18930
Free PE 0
Allocated PE 18930
PV UUID SiNEeE-3Wjm-ZrrC-cTji-9Tzc-DZtw-bWLW4O
答案1
您需要调整 PV 的大小：
sudo pvresize /dev/sda2
分区已经扩大，但PV不知道，因此LVM无法使用额外的空间。
完成后，VG 将显示可用空间，您将能够调整 LV 的大小。