Virtualisation

[Sasi Kumar]

Dear friends,

I am thinking of installing VirtualBox on my laptop. I see good reviews about it, and confirmation from some Oracle employees that work is continuing seriously on it. Anyone here with experience in installing it? I need to install other operating systems also over it. My laptop's hard disk has some space that I can use (something like a 100 GB or so) but just 4GB RAM. Was wondering if that is sufficient. Also may need some guidance eventually.

Best,

Sasi

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V. Sasi Kumar
Free Software Foundation of India
Please see: http://swatantryam.blogspot.com/

[Danial José]

Hi,

>> I am thinking of installing VirtualBox on my laptop.

For best experience you need to enable hardware visualization support in BIOS.

Regards,

Danial José

[Sasi Kumar]

On 4 June 2015 at 13:10, Danial José <dania...@gmail.com> wrote:

Hi,

>> I am thinking of installing VirtualBox on my laptop.

For best experience you need to enable hardware visualization support in BIOS.

Thank you. But please correct me if I am wrong, I think that is required for kvm and vmware only. My machine doesn't support kvm and that is why I thought of going for Virtualbox.And virtualbox is easy to install too. It is just like any other application. Just do apt-get install. At least that is what I gather from websites.

Best,
Sasi

--

V. Sasi Kumar
Free Software Foundation of India

Please see:https://swatantryam.wordpress.com/

[Pirate Praveen]

If you have a recent laptop, its likely to have hardware virtualization support and you just need to enable it in the BIOS.

Run

grep vmx /proc/cpuinfo

for Intel

grep svm /proc/cpuinfo

for amd.

To see if the processor supports hardware virtualization. If it supports hardware virtualization KVM would be faster I think.

You can apt-get virt-manager and its as easy as virtualbox.

Sasi Kumar എഴുതി:

Please see:https://swatantryamwordpress.com/

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[Manoj K]

In most cases, the default settings will be fine; VirtualBox will have picked sensible defaults depending on the operating system that you selected when you created the virtual machine. In certain situations, however, you may want to change these preconfigured defaults.

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Manoj k
Trivandrum.

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"I will not say that i have failed a thousand times.I will say i have found a thousand ways that will cause failure"

[Pirate Praveen]

Those are the features supported by your processor. It just means vmx or hardware virtualization is a supported feature. Other values are not relevant for us. grep is command to search for a particular word in a text file. If processor does not support hardware virtualization then you will get an empty output. So now you need to enable it in BIOS and install virt-manager

Sasi Kumar എഴുതി:

On 4 June 2015 at 14:13, Pirate Praveen <pra...@onenetbeyond.org> wrote:

If you have a recent laptop, its likely to have hardware virtualization support and you just need to enable it in the BIOS.

Run

grep vmx /proc/cpuinfo

for Intel

Thank you, Praveen. When I gave the grep command, I got a long output that I am unable to make head or tail of:
$ grep vmx /proc/cpuinfo
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid

Are you able to understand what it means?

Best,
Sasi

--

V. Sasi Kumar
Free Software Foundation of India

Please see: https://swatantryam.wordpress.com/

[Sasi Kumar]

On 5 June 2015 at 09:24, Pirate Praveen <pra...@onenetbeyond.org> wrote:

Those are the features supported by your processor. It just means vmx or hardware virtualization is a supported feature. Other values are not relevant for us. grep is command to search for a particular word in a text file. If processor does not support hardware virtualization then you will get an empty output. So now you need to enable it in BIOS and install virt-manager

Another doubt, Praveen. Since I will be installing virt-manager from
apt-get, it will go into my root partition obviously. But what about
guest operating systems? Do I have to make space for them also in my
root partition? Or can I install them in any other partition? If the
former, I may have to reinstall my whole system. I would then prefer to
install the second OS separately, as dual boot.

Best,
Sasi

--

V. Sasi Kumar
Free Software Foundation of India
Please see: https://swatantryam.wordpress.com/

[Pirate Praveen]

I think you can choose where to create guest disk images.

Sasi Kumar എഴുതി:

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[Kevin Martin]

Yes you can choose where the guest disk image goes. The image file gets saved as .vdi or something. The good thing about it is that once you have worked on that guest OS for sometime, you can copy the corresponding .vdi file and use it on another computer running virtualbox to continue your work. So theoretically it should be possible to have the image even on a pen drive. I haven't tried any of this though, so don't take just my word for it.

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[Balasankar C]

Of course, you can choose where to store the disk image.

After firing up virt-manager, go to Edit > Connection Details > Storage

There, you can add directories as storage pools.

Then, while creating a VM, choose that pool from the list and create a new volume (vdi or vmdk etc) inside it.

PS : Personally, I prefer Virtualbox. Only because I always used that and it is only recently that I tried virt-manager.

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[Sasi Kumar]

On 6 June 2015 at 12:09, Balasankar C <balas...@autistici.org> wrote:

Of course, you can choose where to store the disk image.

After firing up virt-manager, go to Edit > Connection Details > Storage

There, you can add directories as storage pools.

Then, while creating a VM, choose that pool from the list and create a new volume (vdi or vmdk etc) inside it.

PS : Personally, I prefer Virtualbox. Only because I always used that and it is only recently that I tried virt-manager.Thank you, Balasankar. Hope to install it today or tomorrow.

Thanks for help from everyone.
Sasi

[Kevin Martin]

I've somewhere read that kvm offers better performance than virtualbox. I verified this to be true 2 years back. But now somebody told me virtualbox "caught-up" with KVM in terms of performance, almost.

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[Sasi Kumar]

On 6 June 2015 at 14:58, Kevin Martin <youcanca...@gmail.com> wrote:

I've somewhere read that kvm offers better performance than virtualbox. I verified this to be true 2 years back. But now somebody told me virtualbox "caught-up" with KVM in terms of performance, almost.

The reviews I read seem to say that virtualbox is more or less as good as vmware (the industry leader, probably).  Anyway, my machine doesn't seem to support kvm. So I thought I will try virtualbox. It is easy to install too.

Best,

Sasi

[Kevin Martin Jose]

In terms of ease-of-use, I guess KVM is indeed the less desirable option. 

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