Showing posts with label Virtual Machine. Show all posts
Showing posts with label Virtual Machine. Show all posts

Monday, March 2, 2020

How to Create Virtual Disk without Oracle VM Manager




In some situations, it may be necessary to know how to create a Virtual Disk on OVM 2.2 without using OVM Manager, and attach it to a Virtual Machine.

This can be done in OVM 2.2 via the following process:

1. Log into the Oracle VM server where the VM is running.

2. Change the directory at which the repository is mounted, e.g.:
# cd /to/path/to/repo

3. Create the raw format .img disk image, e.g. initiating 4 GB Virtual Disk:
# dd if=/dev/zero of=newdisk.img bs=1M count=4096

4. Then add new disk image to disk = [ ] section of vm.cfg file of a Virtual Machine. Format:
disk = [ 'file:/mnt/el4u5_64_hvm//system.img,hda,w' ]

Note: Making any change to vm.cfg file effective requires a domain re-creation which is Virtual Machine shutdown then start (NOT restart.)

5. If an outage on the Virtual Machine is not possible, then hot plug read/write as /dev/xvdX by:
# xm block-attach [domain ID] /path/to/image /dev/xvdX w


Friday, June 28, 2019

Boot Virtual Machine from a CD


vm.cfg must be like this

disk = ['file:/OVS/running_pool/121_SRVAXIPMI180_RedHatES_51_Tomcat_DVLP/System.img,hda,w',
'file:/OVS/running_pool/121_SRVAXIPMI180_RedHatES_51_Tomcat_DVLP/Data.img,hdd,w',
'file:/OVS/iso_pool/"YOUR_ISO_GROUP"/rhel-5.1-server-x86_64-dvd.iso,hdc:cdrom,r',
]

or like this, it's depend where is your DVD_ISO

disk = ['file:/OVS/running_pool/121_SRVAXIPMI180_RedHatES_51_Tomcat_DVLP/System.img,hda,w',
'file:/OVS/running_pool/121_SRVAXIPMI180_RedHatES_51_Tomcat_DVLP/Data.img,hdd,w',
'file:/root/rhel-5.1-server-x86_64-dvd.iso,hdc:cdrom,r',
]

Question 8 Explanation

Compartments are the primary building blocks you use to organize your cloud resources. You use compartments to organize and isolate your res...