ESXI添加硬盘并免重启扩展Linux虚拟机LVM
手动在vCenter中将要扩充空间的Linux虚拟机添加一块50G的硬盘,过程略。
接下来是在Linux中操作步骤:
1、 查看SCSI总线:
[[email protected] ~]# ls/sys/class/scsi_host/
host0 host1 host2
2、 重新扫描SCSI总线并添加SCSI设备到系统:
[[email protected] ~]# echo"- - -" > /sys/class/scsi_host/host0/scan
[[email protected] ~]# echo"- - -" > /sys/class/scsi_host/host1/scan
[[email protected] ~]# echo"- - -" > /sys/class/scsi_host/host2/scan
3、 确认磁盘已添加:
[[email protected] ~]# fdisk –l
Disk /dev/sdc: 53.7 GB, 53687091200bytes
****
4、 格式化磁盘:
[[email protected] ~]#fdisk /dev/sdc
依次输入:n #新建分区
p #主分区
1 #分区ID,这里是/dev/sdc1
回车2次 #将所有空间分配
t输入8e #设置分区格式为lvm的8e
w#保存修改
[[email protected] ~]# fdisk –l
DeviceBoot Start End BlocksId System
/dev/sdc1 16527 52428096 8eLinux LVM
5、 将修改更新到系统(避免重启,使用partprobe命令):
[[email protected] ~]#partprobe /dev/sdc1 #如未有此命令,则使用yum –y install parted
6、 确认当前需要扩展的VG:
[[email protected] ~]#vgdisplay或者vgs
--- Volume group ---
VG Name datavg
*
*
VG Size 100.00 GiB
*
*
8、使用/dev/sdc1创建PV:
[[email protected] ~]# pvcreate /dev/sdc1
Writingphysical volume data to disk "/dev/sdc1"
Physicalvolume "/dev/sdc1" successfully created
9、使用新建的PV扩展VG(这里是datavg):
[[email protected] ~]# vgextend datavg /dev/sdc1
Volume group "datavg" successfully extended
10、确定扩展后VG中可用的PE,以扩展LV:
[[email protected] ~]# vgdisplay datavg
Free PE / Size 12799 / 50.00 GiB
11、使用free PE空间扩展LV:
[[email protected] ~]#lvdisplay #查看要扩展的LV
--- Logical volume ---
LVPath /dev/datavg/datalv
***
[[email protected]~]# lvextend -l +12799 /dev/datavg/datalv
Extendinglogical volume datalv to 149.99 GiB
Logical volumedatalv successfully resized
12、在线扩展文件系统:
[[email protected] ~]# resize2fs /dev/datavg/datalv
resize2fs1.41.12 (17-May-2010)
Filesystem at/dev/datavg/datalv is mounted on /data; on-line resizing required
old desc_blocks= 7, new_desc_blocks = 10
Performing anon-line resize of /dev/datavg/datalv to 39319552 (4k) blocks.
The filesystemon /dev/datavg/datalv is now 39319552 blocks long.
13、查看空间是否扩充生效:
[[email protected]~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
35G 5.1G 28G16% /
tmpfs 1.9G 76K1.9G 1% /dev/shm
/dev/sda1 485M 37M423M 8% /boot
/dev/mapper/datavg-datalv
148G 94G 47G67%/data