Extending a logical volume in a virtual machine running Red Hat or Cent OS (1006371)
2017-09-29 11:07
561 查看
Purpose
This article provides steps for extending the root partition residing in a logical volume created with Logical Volume Manager (LVM) in a virtual machine running Red Hat/Cent OS.Resolution
To extend the logical volume:Note: These steps only apply to EXT3 file systems.
Caution: VMware recommends to take a complete backup of the virtual machine prior to making these changes.
Power off the virtual machine.
Edit the virtual machine settings and extend the virtual disk size. For more information, see Increasing the size of a virtual disk (1004047).
Power on the virtual machine.
Identify the device name, which is by default /dev/sda, and confirm the new size by running the command:
# fdisk -l
Create a new primary partition:
Run the command:
# fdisk /dev/sda (depending the results of the step 4)
Press p to print the partition table to identify the number of partitions. By default, there are 2: sda1 and sda2.
Press n to create a new primary partition.
Press p for primary.
Press 3 for the partition number, depending on the output of the partition table print.
Press Enter two times.
Press t to change the system's partition ID.
Press 3 to select the newly creation partition.
Type 8e to change the Hex Code of the partition for Linux LVM.
Press w to write the changes to the partition table.
Restart the virtual machine.
Run this command to verify that the changes were saved to the partition table and that the new partition has an 8e type:
# fdisk -l
Run this command to convert the new partition to a physical volume:
Note: The number for the sda can change depending on system setup. Use the sda number that was created in step 5.
# pvcreate /dev/sda3
Run this command to extend the physical volume:
# vgextend VolGroup00 /dev/sda3
Note: To determine which volume group to extend, use the command vgdisplay.
Run this command to verify how many physical extents are available to the Volume Group:
# vgdisplay VolGroup00 | grep "Free"
Run the following command to extend the Logical Volume:
# lvextend -L+#G /dev/VolGroup00/LogVol00
Where # is the number of Free space in GB available as per the previous command. Use the full number output from Step 10 including any decimals.
Note: To determine which logical volume to extend, use the command lvdisplay.
Run the following command to expand the ext3 filesystem online, inside of the Logical Volume:
# ext2online /dev/VolGroup00/LogVol00
Notes:
Use resize2fs instead of ext2online if it is not a Red Hat virtual machine.
By default, Red Hat and CentOS 7 use the XFS file system you can grow the file system by running the xfs_growfs command.
Run the following command to verify that the / filesystem has the new space available:
# df -h /
Additional Information
For more information, see The Linux Logical Volume Manager from Redhat.Note: The preceding link was correct as of January 29, 2014. If you find the link is broken, please provide feedback and a VMware employee will update the link.
Note: If the extended vmdk does not reflect the new size under Linux guest OS, rescan SCSI device using the following command:
echo 1 > /sys/block/$DEVICE/device/rescan where $DEVICE is 'sda'
For example:
echo 1 > /sys/block/sda/device/rescan
原文地址:https://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1006371
相关文章推荐
- vmware virtual machine must be running in order to be migrated
- Run Vanilla OS X El Capitan, Yosemite or Mavericks in VirtualBox 5.0.10 on a Windows Host
- Install Language support in CentOS 5 or Red Hat Enterprise Linux CentOS add Chinese Support
- Install Language support in CentOS 5 or Red Hat Enterprise Linux CentOS add Chinese Support
- How to install pam_mysql in CentOS or Red Hat
- Windows下启动eclipse出现JRE or JDK must be available in order to run Eclipse.No Java virtual machine was
- One of the disks in this virtual machine is already in use by a virtual machine or by a snapshot"
- NO arrays found in config file or automatically setting up logical volume management
- Rescuing a running virtual machine with dd when datastore metadata is inacces
- Rescuing a running virtual machine with dd when datastore metadata is inacces
- Eclipse启动时报错:A Java RunTime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No java virtual machine was found after searching the following locations:…
- Extend ext3 filesystem for RH5 Virtual Machine running in vCluster
- Disable or enable the IPv6 protocol in Red Hat Enterprise Linux
- How do I configure vncserver to start GNOME or KDE by default in Red Hat Enterprise Linux ?
- A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java virtual machine was found after searching the following locations: /usr/local/eclipse/
- 【转】断电或强制退出后VMware虚拟机出现The virtual machine appears to be in use无法启动问题解决
- 断电或强制退出后VMware虚拟机出现The virtual machine appears to be in use无法启动问题解决
- Oracle VM VirtualBox安装Red Hat linux 9.0的问题
- This configuration program is to be executed in a virtual machine. Execution aborted
- how to create virtual network in OS X 10.9