multiboot

[Steve Cook]

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Markus Schönhaber wrote:
> Derek Broughton:
> 
>> I don't think so - when you create a swap file, it _has_ to be
>> contiguous.
> 
> Really? Where is that documented? BTW: How does one create a file
> that's guaranteed to be contiguous - regardless of it's size or the
> file system used?
> 
I was looking into this a while back and found the following couple of
bits of info.

> Is it possible for the swapfile to become fragmented over time, or
> does it just keep using the same blocks over and over? i.e. if it’s
> all contiguous when you first create the swapfile, will it stay that
> way for the life of the file? The latter. Create the swapfile when
> the filesystem is young and empty, it’ll be nice and contiguous. Once
> created the kernel will never add or remove blocks. The kernel won't
> let you use a sparse file for a swapfile.
> 
> In Linux, as in most other Unix-like operating systems, it is common
> to use a whole partition of a hard disk for swapping. However, with
> the 2.6 Linux kernel, swap files are just as fast[7] as swap
> partitions, although Red Hat recommends using a swap partition. The
> administrative flexibility of swap files outweighs that of
> partitions; since modern high capacity hard drives can remap physical
> sectors, no partition is guaranteed to be contiguous.


I’m sure I found some info showing how to hibernate to a swap file but
can’t locate it at the moment
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