LVM 扩容
扩容 LVM
2023-09-14 09:09:49 时间
1,LVM 查看
- 逻辑卷
lv
# lvdisplay
- 物理卷卷组
vg
# vgdisplay
- 物理卷
pv
# pvdisplay
2,LVM 扩容
# lsblk
- 格式化新磁盘
# mkfs.ext4 /dev/sdc
- 新建物理卷
PV
# pvcreate /dev/sdc
WARNING: ext4 signature detected on /dev/sdc at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sdc.
Physical volume "/dev/sdc" successfully created.
- 查看物理卷
# pvscan
PV /dev/sdb VG lvm_01 lvm2 [<7.28 TiB / <284.04 GiB free]
PV /dev/sdc lvm2 [<7.28 TiB]
Total: 2 [14.55 TiB] / in use: 1 [<7.28 TiB] / in no VG: 1 [<7.28 TiB]
- 扩容物理卷卷组
VG
# vgdisplay
--- Volume group ---
VG Name lvm_01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
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 <7.28 TiB
PE Size 4.00 MiB
Total PE 1907721
Alloc PE / Size 1835008 / 7.00 TiB
Free PE / Size 72713 / <284.04 GiB
VG UUID ZhcL6C-EnJv-hG0Z-xK2j-Kcg9-6Wu3-QDhyZD
# vgextend lvm_01 /dev/sdc
Volume group "lvm_01" successfully extended
Free PE / Size 1980434 / 7.55 TiB
可以扩容的大小
# vgdisplay
--- Volume group ---
VG Name lvm_01
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 14.55 TiB
PE Size 4.00 MiB
Total PE 3815442
Alloc PE / Size 1835008 / 7.00 TiB
Free PE / Size 1980434 / 7.55 TiB
VG UUID ZhcL6C-EnJv-hG0Z-xK2j-Kcg9-6Wu3-QDhyZD
# lvdisplay
--- Logical volume ---
LV Path /dev/lvm_01/lv01
LV Name lv01
VG Name lvm_01
LV UUID 8VfFgs-5mbK-YVyA-CkXc-IogB-Csov-u4TndV
LV Write Access read/write
LV Creation host, time e5, 2019-12-02 15:46:49 +0800
LV Status available
# open 1
LV Size 7.00 TiB
Current LE 1835008
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
- 按照百分比扩容
# lvextend -l +100%FREE /dev/lvm_01/lv01
Size of logical volume lvm_01/lv01 changed from 7.00 TiB (1835008 extents) to 14.55 TiB (3815442 extents).
Logical volume lvm_01/lv01 successfully resized.
- 刷新分区
# df -Th
dev/mapper/lvm_01-lv01 ext4 7.0T 4.3T 2.4T 65% /storage
# resize2fs /dev/lvm_01/lv01
resize2fs 1.44.1 (24-Mar-2018)
Filesystem at /dev/lvm_01/lv01 is mounted on /storage; on-line resizing required
old_desc_blocks = 896, new_desc_blocks = 1864
+++++The filesystem on /dev/lvm_01/lv01 is now 3907012608 (4k) blocks long.
# df -Th
/dev/mapper/lvm_01-lv01 ext4 15T 4.3T 9.6T 31% /storage
参考:
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