linux系統下新增vg大小

哈嘍！！好長時間沒有和大家見面了，最近有很多身邊小伙伴問我呀，linux下面新增vg具體怎么操作，還有linux下面擴容已有vg怎么操作，那么接下來，拉菲就帶大家看看我們如何新增和擴容。

1.由于拉菲資源有限，所以我只能新增10G，，哎~~，添加一個10G的數據盤。

添加數據盤之后我們可以看見的哈，我添加完成之后名字叫sdb，

[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 300M 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17.7G 0 part / sdb 8:16 0 10G 0 disk sr0 11:0 1 1024M 0 rom [root@localhost ~]# fdisk -lDisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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 label type: dos Disk identifier: 0x000dad8dDevice Boot Start End Blocks Id System /dev/sda1 * 2048 616447 307200 83 Linux /dev/sda2 616448 4810751 2097152 82 Linux swap / Solaris /dev/sda3 4810752 41943039 18566144 83 LinuxDisk /dev/sdb: 10.7 GB, 10737418240 bytes, 20971520 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@localhost ~]#

2.創建這塊盤PV

[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 300M 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17.7G 0 part / sdb 8:16 0 10G 0 disk sr0 11:0 1 1024M 0 rom [root@localhost ~]# pvcreate /dev/sdbPhysical volume "/dev/sdb" successfully created. [root@localhost ~]#

3.將這一塊盤創建成VG。VG名vgdata1

[root@localhost ~]# vgcreate vgdata1 /dev/sdbVolume group "vgdata1" successfully created [root@localhost ~]# vgsVG #PV #LV #SN Attr VSize VFree vgdata1 1 0 0 wz--n- <10.00g <10.00g [root@localhost ~]#

4.創建一個LV，名稱為Lvdata1,創建完成之后并查看。

[root@localhost ~]# lvcreate -L 9.9G -n Lvdata1 vgdata1 Rounding up size to full physical extent 9.90 GiBLogical volume "Lvdata1" created. [root@localhost ~]# cd /dev/mapper/ [root@localhost mapper]# ls control vgdata1-Lvdata1 [root@localhost mapper]#

5.將已經創建完成的vgdata1-Lvdata1給它賦予文件系統，拉菲在這里就不過多解釋哦~~

[root@localhost ~]# mkfs.ext4 /dev/mapper/ control vgdata1-Lvdata1 [root@localhost ~]# mkfs.ext4 /dev/mapper/vgdata1-Lvdata1 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 648960 inodes, 2595840 blocks 129792 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2151677952 80 block groups 32768 blocks per group, 32768 fragments per group 8112 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@localhost ~]#

6.那么到這一步就算是已經完成勒，如果需要掛載的話，那么可以繼續往下面看哦~~

[root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 300M 0 part /boot ├─sda2 8:2 0 2G 0 part [SWAP] └─sda3 8:3 0 17.7G 0 part / sdb 8:16 0 10G 0 disk └─vgdata1-Lvdata1 253:0 0 9.9G 0 lvm sr0 11:0 1 1024M 0 rom [root@localhost ~]#

7.需要掛載的話，拉菲悄悄告訴大家，需要創建掛載路徑，或者在已經有的路徑上進行掛載，根據客戶需要，想掛哪兒就掛哪兒。

在這里我就想掛載到、/opt/a里面

[root@localhost ~]# mkdir /opt/a [root@localhost ~]# ls /opt a rh [root@localhost ~]# 在這里就已經掛載完成啦， [root@localhost ~]# mount /dev/mapper/vgdata1-Lvdata1 /opt/a [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 18G 4.3G 14G 24% / devtmpfs 471M 0 471M 0% /dev tmpfs 487M 0 487M 0% /dev/shm tmpfs 487M 8.6M 478M 2% /run tmpfs 487M 0 487M 0% /sys/fs/cgroup /dev/sda1 297M 147M 151M 50% /boot tmpfs 98M 20K 98M 1% /run/user/1000 tmpfs 98M 0 98M 0% /run/user/0 /dev/mapper/vgdata1-Lvdata1 9.7G 37M 9.1G 1% /opt/a [root@localhost ~]#

每次快樂的時光總是很短暫，愛情也是，懂得知足，請珍惜身邊的人。
下一邊~~~~
linux系統下擴容vg

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