EXSi里调大硬盘大小后在linux里怎么生效

最新推荐文章于 2025-01-15 15:19:28 发布

转载最新推荐文章于 2025-01-15 15:19:28 发布 · 230 阅读

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原文链接：http://www.cnblogs.com/zencore/p/4497767.html

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#运维

本文提供了一套详细的步骤来帮助读者扩大虚拟机中的磁盘分区及文件系统大小。包括重启内核确认磁盘被识别、使用fdisk调整分区大小、调整LVM物理卷与逻辑卷、最后使用resize2fs命令更新文件系统的大小。

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下面是步骤，强烈建议之前备份数据

It looks like you've already rebooted but just in case, ensure the kernel recognizes the larger disk
```
echo 1 > /sys/class/scsi_disk/0:0:0:0/device/rescan
```

Resize the second partition with fdisk

fdisk /dev/sda
p     # print current
d     # delete
- 2
n     # create
- p   # primary partition
2     # partition number
- default first/last cylinders
t     # change partition id
- 2
- 8e (hex code)
p     # print the current again to verify it's expanded
w     # write changes

Reboot the virtual machine
```
shutdown -r now
```
Once it's back up, resize the LVM physical volume
```
pvresize /dev/sda2
```
Now resize the LVM logical volume (NOTE: I'm unable to decipher what your logical volumes name is based on the screenshots and thus am assuming LogVol00. You can determine this by running lvdisplay.)
```
lvresize -l +100%FREE /dev/VolGroup00/LogVol00
```
Finally, lets resize the filesystem
```
resize2fs -p /dev/VolGroup00/LogVol00
```
Verify the filesystem is larger
```
df -h
```