linux系統下擴容vg大小

幾分鐘前，我和大家探討了新增vg如何操作，那么接下來我會和大家聊一下如何把已有的vg進行擴容，基礎必會知識，請認真學習~~~~你們的拉菲

1.操作一樣，我們還是再添加一塊10G的硬盤，我又要吃土了·嗚嗚嗚~~~

這里添加之后名字是sdb

[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 8.5M 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 /dev/mapper/vgdata1-Lvdata1 9.7G 37M 9.1G 1% /opt/a [root@localhost ~]# [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 sdc 8:32 0 10G 0 disk └─vgdata1-Lvdata1 253:0 0 9.9G 0 lvm sr0 11:0 1 1024M 0 rom [root@localhost ~]# [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 bytesDisk /dev/sdc: 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 bytesDisk /dev/mapper/vgdata1-Lvdata1: 10.6 GB, 10632560640 bytes, 20766720 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.將sdb這個硬盤創建成PV

[root@localhost ~]# pvcreate /dev/sdbPhysical volume "/dev/sdb" successfully created. [root@localhost ~]# vgsVG #PV #LV #SN Attr VSize VFree vgdata1 1 1 0 wz--n- <10.00g 96.00m [root@localhost ~]#

3.將硬盤sdb擴張到我們vgdata1這個VG中

[root@localhost ~]# vgextend vgdata1 /dev/sdbVolume group "vgdata1" successfully extended [root@localhost ~]# vgsVG #PV #LV #SN Attr VSize VFree vgdata1 2 1 0 wz--n- 19.99g <10.09g

4.擴展vgdata1-Lvdata1，新增剛剛添加的10GB

[root@localhost ~]# lvextend -L +9.9G /dev/vgdata1/Lvdata1 Rounding size to boundary between physical extents: 9.90 GiB.Size of logical volume vgdata1/Lvdata1 changed from 9.90 GiB (2535 extents) to 19.80 GiB (5070 extents).Logical volume vgdata1/Lvdata1 successfully resized. [root@localhost ~]#

5.將擴展空間賦予文件系統

[root@localhost mapper]# resize2fs /dev/mapper/vgdata1-Lvdata1 resize2fs 1.42.9 (28-Dec-2013) Filesystem at /dev/mapper/vgdata1-Lvdata1 is mounted on /opt/a; on-line resizing required old_desc_blocks = 2, new_desc_blocks = 3 The filesystem on /dev/mapper/vgdata1-Lvdata1 is now 5191680 blocks long.[root@localhost mapper]#

6.到此擴展成功

[root@localhost mapper]# 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 8.5M 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 /dev/mapper/vgdata1-Lvdata1 20G 44M 19G 1% /opt/a [root@localhost mapper]# 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 19.8G 0 lvm /opt/a sdc 8:32 0 10G 0 disk └─vgdata1-Lvdata1 253:0 0 19.8G 0 lvm /opt/a sr0 11:0 1 1024M 0 rom [root@localhost mapper]#

快樂的時光總是很短暫，生活也是一樣，要先苦后甜~~~
下一邊
待定~~~~~

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