我想在不使用 CD 的情况下使用 /dev/sda 上的可用空间扩展 /dev/sda2。
fdisk -l
输出
[root@ip126 ~]# fdisk -l
Disk /dev/sda: 26.8 GB, 26843545600 bytes
64 heads, 32 sectors/track, 25600 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00086c7a
Device Boot Start End Blocks Id System
/dev/sda1 * 2 501 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 502 10240 9972736 8e Linux LVM
Partition 2 does not end on cylinder boundary.
Disk /dev/mapper/VolGroup-lv_root: 9168 MB, 9168748544 bytes
255 heads, 63 sectors/track, 1114 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/VolGroup-lv_swap: 1040 MB, 1040187392 bytes
255 heads, 63 sectors/track, 126 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
pvdisplay
输出
[root@ip126 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name VolGroup
PV Size 9.51 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 2434
Free PE 0
Allocated PE 2434
PV UUID 2lmvRB-u3AL-DYAX-2Azh-HsHE-skwW-3hewTE
vgdisplay
输出
[root@ip126 ~]# vgdisplay
--- Volume group ---
VG Name VolGroup
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 9.51 GiB
PE Size 4.00 MiB
Total PE 2434
Alloc PE / Size 2434 / 9.51 GiB
Free PE / Size 0 / 0
VG UUID tp0a2o-Hkup-3V0m-01K1-udfY-Y2l2-gTMHjg
lvdisplay
输出
[root@ip126 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/VolGroup/lv_root
LV Name lv_root
VG Name VolGroup
LV UUID 9xV22O-69gz-fib7-t3tF-ksqc-LWhj-KLYful
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2018-05-23 09:31:01 -0400
LV Status available
# open 1
LV Size 8.54 GiB
Current LE 2186
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/VolGroup/lv_swap
LV Name lv_swap
VG Name VolGroup
LV UUID 0iRAF9-rF8Y-kpn2-rPyV-fnAW-Q2vq-aK2ODT
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2018-05-23 09:31:02 -0400
LV Status available
# open 1
LV Size 992.00 MiB
Current LE 248
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
答案1
确保您拥有可能想要保留的数据的最新备份。在没有数据备份的情况下,切勿弄乱文件系统、逻辑卷、卷组、物理卷和分区。
然后阅读并理解本答案中提到的实用程序的手册页。仅当您确信自己理解该过程时才继续。
您真正想要的是扩展文件系统。为了扩展文件系统,您必须扩展它所在的逻辑卷。为了扩展逻辑卷,您必须扩展卷组。
你有两个选择;您可以创建一个新的物理卷并将其添加到卷组中,也可以扩展分区并调整物理卷的大小。
或者,如果您愿意,您可以扩展分区和物理卷:
使用以下命令将分区扩展到磁盘末尾
parted
:sudo parted /dev/sda resizepart 2 -1s
使用以下命令扩展物理卷以覆盖新扩展的分区
pvresize
。
如果需要,将文件系统扩展到新的可用空间。对特定文件系统使用适当的实用程序;例如,对于 Ext4,您将使用
resize2fs
。