EVE-NG硬盤擴容，存儲海量鏡像
一、查看當前磁盤使用情況
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/dev/mapper/eve--ng--vg-root，所以我們只要把這個LV容量擴大即可
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二、給EVE-NG硬盤擴大容量，對於EVE-NG來說，相當於加大物理磁盤容量
把EVE-NG關機後編輯EVE-NG虛擬機
注意：無法擴展具有快照的虛擬機中的磁盤，必須刪除快照。
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點擊擴展
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填寫磁盤大小，點擴展
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等待完成擴展
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三、EVE-NG系統層面增大VG容量
1、加電開機EVE-NG，確認硬盤容量爲500G
root@eve-ng:~# fdisk -l
……
……
……
Disk /dev/sda: 500 GiB, 536870912000 bytes, 1048576000 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x6d98196e
Device Boot Start End Sectors Size Id Type（硬盤分區情況）
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 1001470 62912511 61911042 29.5G 5 Extended （sda2的end sector值，該數值 +1即是sda3的start sector）
/dev/sda5 1001472 62912511 61911040 29.5G 8e Linux LVM
Disk /dev/mapper/eve--ng--vg-root: 23.5 GiB, 25253904384 bytes, 49324032 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/eve--ng--vg-swap_1: 6 GiB, 6442450944 bytes, 12582912 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
root@eve-ng:~#
2、給硬盤sda分區
root@eve-ng:~# fdisk /dev/sda
Welcome to fdisk (util-linux 2.27.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): n
Partition type
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p): p
Partition number (3,4, default 3): 3
First sector (999424-1048575999, default 999424): 62912512
#（sda3的start sector，該值是sda2的end sector值 +1）
Last sector, +sectors or +size{K,M,G,T,P} (62912512-1048575999, default 1048575999):
由於sda1與sda2中間的一些sector沒有使用，所以First sector提示的default是999424
Created a new partition 3 of type ‘Linux‘ and of size 470 GiB.
Command (m for help): p
Disk /dev/sda: 500 GiB, 536870912000 bytes, 1048576000 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x6d98196e
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 1001470 62912511 61911042 29.5G 5 Extended
/dev/sda3 62912512 1048575999 985663488 470G 83 Linux
/dev/sda5 1001472 62912511 61911040 29.5G 8e Linux LVM
Partition table entries are not in disk order.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
root@eve-ng:~# reboot （重啓，使分區生效）
3、將sda3加入到VG中
查看VG的名字
root@eve-ng:~# vgdisplay
--- Volume group ---
VG Name eve-ng-vg
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 29.52 GiB
PE Size 4.00 MiB
Total PE 7557
Alloc PE / Size 7557 / 29.52 GiB
Free PE / Size 0 / 0
VG UUID 9MuCtK-vJSR-Y2aw-iIPi-lQa3-0onn-m5uNbv
將sda3加入到eve-ng-vg這個VG中
root@eve-ng:~# vgextend eve-ng-vg /dev/sda3
Physical volume "/dev/sda3" successfully created
Volume group "eve-ng-vg" successfully extended
root@eve-ng:~# vgdisplay
--- Volume group ---
VG Name eve-ng-vg
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 499.52 GiB
PE Size 4.00 MiB
Total PE 127877
Alloc PE / Size 7557 / 29.52 GiB
Free PE / Size 120320 / 470.00 GiB
VG UUID 9MuCtK-vJSR-Y2aw-iIPi-lQa3-0onn-m5uNbv
4、擴容LV
查看LV路徑
root@eve-ng:~# lvdisplay
--- Logical volume ---
LV Path /dev/eve-ng-vg/root
LV Name root
VG Name eve-ng-vg
LV UUID 0wyDXu-602J-HQ0N-T1Ue-J5si-EFFY-vKO1tX
LV Write Access read/write
LV Creation host, time eve-ng, 2017-03-18 22:23:02 +0200
LV Status available
open 1
LV Size 23.52 GiB
Current LE 6021
Segments 1
Allocation inherit
Read ahead sectors auto
-
currently set to 256
Block device 252:0--- Logical volume ---
LV Path /dev/eve-ng-vg/swap_1
LV Name swap_1
VG Name eve-ng-vg
LV UUID umXPMX-3BGd-2TR6-Msjn-zp05-GLvx-ReOHx6
LV Write Access read/write
LV Creation host, time eve-ng, 2017-03-18 22:23:02 +0200
LV Status availableopen 2
LV Size 6.00 GiB
Current LE 1536
Segments 1
Allocation inherit
Read ahead sectors auto -
currently set to 256
Block device 252:1將剩餘容量擴容到/dev/eve-ng-vg/root路徑下
root@eve-ng:~# lvextend -l +100%FREE /dev/eve-ng-vg/root
Size of logical volume eve-ng-vg/root changed from 23.52 GiB (6021 extents) to 493.52 GiB (126341 extents).
Logical volume root successfully resized.
root@eve-ng:~# lvdisplay
--- Logical volume ---
LV Path /dev/eve-ng-vg/root
LV Name root
VG Name eve-ng-vg
LV UUID 0wyDXu-602J-HQ0N-T1Ue-J5si-EFFY-vKO1tX
LV Write Access read/write
LV Creation host, time eve-ng, 2017-03-18 22:23:02 +0200
LV Status availableopen 1
LV Size 493.52 GiB
Current LE 126341
Segments 2
Allocation inherit
Read ahead sectors auto -
currently set to 256
Block device 252:0--- Logical volume ---
LV Path /dev/eve-ng-vg/swap_1
LV Name swap_1
VG Name eve-ng-vg
LV UUID umXPMX-3BGd-2TR6-Msjn-zp05-GLvx-ReOHx6
LV Write Access read/write
LV Creation host, time eve-ng, 2017-03-18 22:23:02 +0200
LV Status availableopen 2
LV Size 6.00 GiB
Current LE 1536
Segments 1
Allocation inherit
Read ahead sectors auto -
currently set to 256
Block device 252:1重新定義文件系統大小
root@eve-ng:~# resize2fs /dev/eve-ng-vg/root
resize2fs 1.42.13 (17-May-2015)
Filesystem at /dev/eve-ng-vg/root is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 31
The filesystem on /dev/eve-ng-vg/root is now 129373184 (4k) blocks long.
5、查看磁盤使用情況
root@eve-ng:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 2.9G 0 2.9G 0% /dev
tmpfs 597M 14M 584M 3% /run
/dev/mapper/eve--ng--vg-root 486G 6.1G 460G 2% /
tmpfs 3.0G 0 3.0G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 3.0G 0 3.0G 0% /sys/fs/cgroup
/dev/sda1 472M 105M 343M 24% /boot
root@eve-ng:~#
好啦，擴容完成！各位，隨意上傳鏡像吧，鏡像再多也不怕！