![在 CentOS 6 上扩展分区](https://linux22.com/image/660522/%E5%9C%A8%20CentOS%206%20%E4%B8%8A%E6%89%A9%E5%B1%95%E5%88%86%E5%8C%BA.png)
我有一个 VPS,似乎某个地方缺少空间。它应该是 150GB,但只有 50GB。我一直在尝试扩展分区,但即使在指南的帮助下,我似乎也找不到方法。
这是在 CentOS 6 上安装有 Plesk 11 的 VPS。
任何指导都将不胜感激。我想将所有剩余空间用于 vda2 分区。
[root@www ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 252:0 0 150G 0 disk
├─vda1 252:1 0 500M 0 part /boot
└─vda2 252:2 0 49.5G 0 part
├─vg_plesk-lv_root (dm-0) 253:0 0 48G 0 lvm /
├─vg_plesk-lv_swap (dm-1) 253:1 0 1G 0 lvm [SWAP]
└─vg_plesk-lv_tmp (dm-2) 253:2 0 512M 0 lvm /tmp
[root@www ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "vg_plesk" using metadata type lvm2
[root@www ~]# lvm vgdisplay
--- Volume group ---
VG Name vg_plesk
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 49.51 GiB
PE Size 4.00 MiB
Total PE 12674
Alloc PE / Size 12674 / 49.51 GiB
Free PE / Size 0 / 0
VG UUID 8Hsz6T-yQVv-GerB-32Qe-ZvIQ-BQvA-uYqft5
(parted) print all
Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/vg_plesk-lv_tmp: 537MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00B 537MB 537MB ext4
Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/vg_plesk-lv_swap: 1074MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00B 1074MB 1074MB linux-swap(v1)
Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/vg_plesk-lv_root: 51.5GB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00B 51.5GB 51.5GB ext4
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 161GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 1049kB 525MB 524MB primary ext4 boot
2 525MB 53.7GB 53.2GB primary lvm
添加的输出:
[root@www ~]# fdisk -l
Disk /dev/vda: 161.1 GB, 161061273600 bytes
16 heads, 63 sectors/track, 312076 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00034f7d
Device Boot Start End Blocks Id System
/dev/vda1 * 3 1018 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/vda2 1018 104026 51915776 8e Linux LVM
Partition 2 does not end on cylinder boundary.
Disk /dev/mapper/vg_plesk-lv_root: 51.5 GB, 51547996160 bytes
255 heads, 63 sectors/track, 6267 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/vg_plesk-lv_swap: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 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/vg_plesk-lv_tmp: 536 MB, 536870912 bytes
255 heads, 63 sectors/track, 65 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
[root@www ~]# pvdisplay
--- Physical volume ---
PV Name /dev/vda2
VG Name vg_plesk
PV Size 49.51 GiB / not usable 2.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 12674
Free PE 0
Allocated PE 12674
PV UUID oFD1tJ-wJt1-MlBK-NKfq-4MMF-ZUCG-kZQZVx
我似乎无法找出这 100GB 的免费空间在哪里或如何分配它。
答案1
好的,这些命令很重要;
首先执行“fdisk -l”,查看列出的内容,然后执行“pvdisplay”查看 PV 的布局方式,有可能磁盘上有未分区的空间(在这种情况下只需创建一个类型为“8e”的新分区,然后将其添加到 PV,扩展 VG,然后扩展 LV)或者它在 PV 中但不在 VG 中,在这种情况下只需扩展 VG,然后扩展 LV。
编辑-根据您的输出,您需要做的是,以root/sudo身份输入;
fdisk /dev/fda
fdisk 应用程序将启动,输入“n”并回车,您将看到;
Command action
e extended
p primary partition (1-4)
输入“p”
然后会要求你输入分区号,输入 3(三),按 Enter
Partition number (1-4): 3
然后会要求您输入第一个圆柱体,只需接受系统上弹出的任何内容(不是下面的值,这只是为了向您展示它的样子);
First cylinder (197-621, default 197):<RETURN>
Using default value 197
然后它会询问最后一个圆柱体,同样只需接受它抛出的任何内容,而不是我下面的示例
Last cylinder or +size or +sizeM or +sizeK (197-621, default 621): +128M
现在输入“p”并回车显示分区表,它看起来应该像这样;
Device Boot Start End Blocks Id System
/dev/vda1 1 196 395104 8e LVM
/dev/vda2 197 262 133056 8e LVM
/dev/vda3 197 262 133056 8e Linux
现在输入“t”并回车,首先会要求您输入分区号,您的分区号是 3(三),按回车键,然后会要求您输入分区类型代码,您的分区号是“8e”(表示 LVM),按回车键,它看起来应该像这样;
Command (m for help): t
Partition number (1-4): 3
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (LVM)
现在输入“p”并再次输入,输出应该看起来像这样;
Device Boot Start End Blocks Id System
/dev/vda1 1 196 395104 8e LVM
/dev/vda2 197 262 133056 8e LVM
/dev/vda3 197 262 133056 8e LVM
现在输入“w”来写出此配置,您将返回到 shell 提示符,然后可以像往常一样扩展 PV、VG 和 LV。