Re: [coLinux-users] q: dynamic sized image & memory sharing.

[Chan K. H. <cha...@gm...>]

Thanks Henry!

Very useful info!!

1) The word I had to look for was sparse file!
Completely didn't know about it.
& I used to create disk images using dd or other tools too.
Another person suggested I use sparse files too!
Passed me this link.

http://www.debian-administration.org/articles/664

2) Ah, this is a very important piece of info indeed!
Thanks!
What I might do then, is set coLinux mem=2048 by default.
I suppose my Windows apps will still have some memory to use along the way.

KarHeng

On 2011-07-06 03:59, Henry Nestler wrote:
> Hello,
>
> 1)
> you can use mkFile.exe with option -s for sparse instead dd. Then the
> size of image file will be use only on require, and you can create
> images bigger as your hard disk. Of curse, you can only use size up to
> your free disk space.
> See http://colinux.wikia.com/wiki/MkFile
>
> 2)
> coLinux allocates memory on require. You can see it in the performance
> monitor of Windows task manager.
> If coLinux is idle and no application is running, then the unused memory
> was given back to Windows.
>
> Of curse, if a windows application eats all your memory, then coLinux
> becomes only the rest.
> But remember: We talk here about the physical memory for drivers.
> Typically Applications uses only virtual memory and this memory can be
> swapped out to disk.
>
> Henry
>
>
> On 05.07.2011 17:48, Paolo Minazzi wrote:
>> 1) No, it is not possible. You need a new cobd.
>> 2) I'm not sure if colinux alloc all the memory you have required at
>> the startup ... I don't know these details ;=)
>>
>> Paolo
>>
>>
>> On Tue, Jul 5, 2011 at 2:11 PM, Chan Kar Heng<cha...@gm...>  wrote:
>>> Hi,
>>>
>>> 2 questions:
>>>
>>> 1) dynamic sized images.
>>> Can images be dynamically sized?
>>> ie: a file having the root file system only actually occupy 1GB hdd
>>> space temporarily (but is supposed to be an 80GB hdd).
>>> I've also learnt that linux is capable of mounting a filesystem that is
>>> backed by a file.
>>> ie: use dd to create a file called /tmp/myfs, having size of say 10GB;
>>> /tmp/myfs can then be mounted&  formatted to ext2fs.
>>> Is there a way to make this dynamically sized?
>>> I'm looking for something similar to what's in VMWare (option to only
>>> consume required disk space later).
>>>
>>> 2) memory sharing.
>>> My laptop has 4GB memory.
>>> Can both Windows&  coLinux just assume it both has 4GB memory?
>>> Say if an application under Windows takes up 3GB memory, then only 1GB
>>> will be available for coLinux.
>>> Can this be done?
>>> Am wondering if this option is available instead of making coLinux take
>>> up a fixed memory of say 2GB, making memory unavailable to my other
>>> Windows apps. This also makes memory from Windows unavailable to coLinux
>>> when my coLinux needs more than 2GB.
>>>
>>> Thanks&  best regards,
>>>
>>> KarHeng
>
>