@whose

Just the same ?

You obviously didn't click her link !!

click this text

Last edited by The_Editor on 18-Feb-2006 at 10:40 PM.

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@kgrach
Quote:

he only downside of the system is you can't store DVD ISO on you HD why you would want to do that is beyond me.

Backuping a DVD with only a DVD drive

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@pixie

again a DVD is almost allway's made up of several files.
You could also split an ISO into sections.
I am just suggesting for 99.99999999999999% of all applications.
the 32 bit limit is not an issue and everything else there is a simple work around.

64 bit just to have 64bit is a silly reason for breaking backwards compatibility.
you gain very little for a potentialy large loss.

remember large as in single 8.7 Gig DVD file won't play properly in windows.
It will also have compatibility problems playing in a large number of DVD players.
until we have a working firewire anything on AOS there is no need for 64 bit.

Right now amiga DOS is 2 gig that is why the max memory is 2g.
The reason that has not been changed up to now is program compatibility.


Kgrach

@kgrach

Quote:

Right now amiga DOS is 2 gig that is why the max memory is 2g. The reason that has not been changed up to now is program compatibility.

No, that is not the reason. The new 64-bit functions in DOS do not have any effect on backward compatibility. Old programs can still use the 32-bit functions and they can still handle smaller files just like before. In fact old programs can also read/write >4GB files now by using the usual Read()/Write() functions, or the clib fread()/fwrite() ones, just without the new 64-bit DOS functions they won't be able to get the correct file size if the file is >4GB and they won't be able to Seek() above 2GB in the file (because Seek() uses a signed 32-bit offset).

@kgrach

Ever heard of DVD images?

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@gregthecanuck

Quote:

gregthecanuck wrote: In my opinion a port of something like ReiserFS to OS4 would be quite useful. Perhaps this is something that Hyperion should support officially. It would be a shame to write yet-another-file-system from scratch when there are some really nice open-source examples out there already. Similar idea to how they have implemented the new memory management model - didn't reinvent the wheel, just adapted a great implementation idea.

Have a look around at the various Unix-ish operating systems available and which server grade file systems they support. They all have abstraction layers for hooking up file systems with the respective operating system, but there is surprisingly little variety. You can find ReiserFS only on Linux, but not on the BSD Unixes, Solaris, AIX or Irix. You can find XFS on Irix and Linux, but not on Solaris, AIX or the BSD Unixes. You can find JFS on AIX and Linux, but not on Irix, Solaris or the BSD Unixes. ZFS is currently Solaris-only, but bound to be ported to Linux.

File system code, even if it's around and available for use essentially for free, still needs to be ported for each operating system it should run on. And considering the fact that not even the various Unix-ish operating systems all support the same subset of server grade file systems you might no longer wonder why nobody has ported any of them to the Amiga yet.

Porting a file system to the Amiga is really tough. That's because writing one is tough to start with, and with most of the file systems from the Unix domain the major obstacle is in that we have very different operating system architectures. There's some motivation to change how file systems interact with the Amiga operating system and user code, but it's quite a challenge of its own. If you want a solution which scales well and allows multiple clients to access a file system at the same time, yet is not subject to resource hogging, you'll have to put an awful lot of work into planning, design, testing and retesting. That's quite an effort.

So, in a nutshell, porting a file system from a different platform doesn't automatically produce a useable file system for the Amiga, and it's quite hard in the first place. That's why we have to reinvent the wheel.

@olsen

Yes, but still it would be nice to have all those filesystems to choose from
so we could mount a Linux, AIX, Windows or OSX etc. harddrive to get the
files of it if ever needed.. Speed or optimization would be of no concern.
We will of course use the officially supported file system for our Amiga
partions anyway..

Btw NTFS file system for OS4 would be great to have. Think about connecting
all those external harddrives directly to your USB and use them without fuss.

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@The_Editor

I did. But what does the snapshot say? There is one big file located on a partition capable of holding a file >4GB. So what? Did you transfer this from your DV recorder directly to HD? Nice. But there is no need to save the raw data in one big chunk before authoring it, if your transfer and authoring software supports the other way (most software does).

If you try to build a DVD image on a harddrive with a 32bit FS, it will be made of several chunks, each smaller than 4GB and later on simply written to DVD. The raw data can be transferred the same way, several small chunks of data. The VLab Motion software did the same, years ago. There you´ve got partitions with a special, simple FS up to 4GB in size. If you needed more space, you just made some more partitions resp. used two or more harddrives. The software was responsible to manage the transition from one partition to the other.

Using common authoring software gives you the option to choose a compatible (e.g. DVD standalone players) or fast way (PC only or special DVD players) of authoring your DVD.
The first one is the way kgrach mentioned. Most commercial DVD movies are made with this technique. Just open a commercial DVD movie on your PC in the explorer and have a look at the sizes of the .vob files in there. I bet you will find lots of DVDs with .vob files smaller than 2GB. Most of them will only be near to 1GB size in fact (exactly 0.99 GB).

Even for a plain DVD image there is no need to write one single file. The image can easily be divided into 2GB chunks of data, which will be later on written to DVD one by one, just as there would be only one image data file of 4,7GB size or even more. Nero does DVD image processing in this way if you use a FAT32 partition.

What do you think is a backup program like Diavolo Backup doing, if you try to backup the data of a 99% used 4GB partition to 2 GB DAT tapes? Does it say "no-no, dear user, you can´t do that, as your backup medium is way too small to swallow all this data!"? No, it divides the HD image (or file data) into several chunks, all written one by one to several backup media. They can be written back to HD later, without problems.

There is still no big magic in here

It´s really nice to have a 64Bit FS, but it is not necessarily needed to master DVDs or doing other things with real huge amounts of data. Application software is responsible for the appropriate data management, not the FS.

greetz

Last edited by whose on 21-Feb-2006 at 04:42 AM.

@Hans

I do a lot of video editing, and if I were to do that on the Amiga, then I'd def need more than 4gig files!
Half an hour of DV off my camera is just over 4 gig, so would reuqire a load more than that.
I then put onto DVD.

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@TrebleSix

Same here. The RAW footage goes into capture drive.

The Edited and Rendered project ( along with EDL & stills) goes into Render drive (what a surprise !!)

It's then (if needed) pulled into a DVD burning proggie where it obviously gets converted into mpeg.

I could render directly out to mpeg if I wanted, but we find it much better speed wise to render to Avi so we can proof watch it afterwards.

BTW .. Realtime aint fast enough.

I would love to do this on an Amiga.. Where my interest in video started and LONG for a titler as easy as Scala to be integrated into NLE proggies.

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@Thread


so, anyone tryed the new sfs?
i think i've read i need to keep boot partition with the old version of sfs or i won't be able to boot anymore because newer sfs isn't compatible with previous versions.
that's fne with me,
i'd like to try it, but before trying i'd like to ask few advice before trashing all my precious datas and partitions ;)

i have a 40gb disk with 5 partitions.
i have installed vanilla os4pre4 (clean install)
my boot partition is dh0:

how can i make dh1,dh2,dh3 and dh4 to support files over 4gb?
i understand i will need to keep dh0: with previous sfs version,
now how do i install a new sfs, i mean how can i install a 2nd sfs?
i will need to have two sfs version installed?
how do i setup this?
what about partition's FS mask stuff like 0x5555...what should i type in?

any guide or tutorial out there?
anyone successfully got this working?
could someone submit a review or something?

thanks

@freaks

I did put it on a spare partition wich I didn't use for anything (not a boot partition). The SmartFilesystem2 goes to the sys:kickstart/ directory.

In Mediatoolbox you set the type to 53465302 wich will give you SFS\02 .

I haven't tried it much except for copying a few files...

@hotrod

thanks for the help!
i'm trying installing it now :)
and i need to setup another paypal account too :)