Status of NTFS support was Re: [PATCH] 2.4.7 More tiny NTFS fixes

,----[ On Tue, Jul 24, at 12:14AM, Anton Altaparmakov wrote:
| Please apply below patch. It is against 2.4.7 and adds three more |return checks (it is orthogonal to the one sent on Sunday). `----[ End Quote ]---------------------------

Not that I understand what this means, I have no idea. But, I know that NTFS used to be really poorly supported in the kernel. I have seen a few patches to it ove rthe past couple of weeks and makes me wonder what the status of it is now. Anyone care to comment? --gabe

"It's not brave, if you're not scared."

I will comment as the current maintainer. (-:

If you by "poorly supported" mean that it was a more or less abandoned project then that has changed a lot indeed. NTFS is now under active development, both kernel and user space side. I am happy to receive patches and forward them for inclusion if appropriate or integrate them in my local development tree and submit as larger patch later (depends on the triviality of the patches). And I try to respond asap to requests/bug reports/etc. Currently my personal response times are between 5mins and a week or so depending on how busy I am.

If by "poorly supported" you mean it doesn't work very well, then that has improved as well. We have a fully functional mkntfs program already on the userspace side and ntfsfix which repairs some of the damage done by the ntfs driver making it a bit somewhat safer to use. The driver itself has much improved in recent months, writing is now relatively ok as long as it happens on a UP system, to simple files and directories. There is still a lot not implemented so only the simple case works for now. Reading is relatively stable and most things are implemented wrt to reading the normal data attribute of both uncompressed and compressed files. We now can cope with large files to the full potential of NTFS (i.e. we cope with 2^63 byte sized files) for example to mention one of the improvements.

So to summarize: we are working on it but don't hold your breath. NTFS is highly complex and extremely poorly documented. Most of our knowledge is based on reverse engineering and looking at on-disk structures with hex/disk editors and it will take considerable time to have a fully working fully featured NTFS implementation...

Anton

  "Nothing succeeds like success." - Alexandre Dumas
-- 
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Linux NTFS Maintainer / WWW: http://linux-ntfs.sf.net/
ICQ: 8561279 / WWW: http://www-stu.christs.cam.ac.uk/~aia21/