Hi All, Well, i suppose lean fs is not a mainstream filesystem like the FAT family, ntfs and ext*
Kind Regards, Geraldo Netto Sapere Aude => Non dvcor, dvco São Paulo, Brasil, -3gmt site: http://exdev.sf.net/ On 27 September 2015 at 22:16, Chelson Aitcheson <chelson.aitche...@gmail.com> wrote: > Has anyone considered the lean file system at all? > > On 25/09/2015 9:13 pm, "Eric Auer" <e.a...@jpberlin.de> wrote: >> >> >> Hi Mercury, >> >> (note: 2 GB and one core are no problem even for DOS - but >> for example 8 GB and several cores are supported by almost >> nothing in DOS, as there are no nice DOS extenders for it) >> >> > I don't see where we need multitasking for NAS use. A program could be >> > made to both handle incoming requests while serving data and doing other >> > tasks, eliminating the need for a proper multitasking kernel. Even if >> >> You would still have to have several files and networking >> connections open at the same time and preferably transfer >> data from several files in parallel. In Linux, you can do >> that with good performance, but DOS performance is limited >> because your server must not do concurrent kernel calls. >> >> > that was the case, the bloat of the Linux kernel would >> > make it prohibitive in certain applications. >> >> Give an example for that - Linux can even run as embedded >> operating system on SD cards with built-in Wifi / WLAN :-) >> I mean on tiny computers of the size of an actual SD card! >> >> > I will draw up a spec as I said when I get the time. After that, >> > implementation is up to the rest of the community. We could just >> > as easily go with FAT+ or not advance the filesystem at all. >> >> As far as I understand, you feel limited by the maximum file >> size of 2 or maybe 4 GB and maximum disk size of 2 TB? Then >> you may want to start with adding GPT support to the kernel. >> >> Another issue is that FAT32 has bad performance and that the >> FAT way of doing LFN is rather ugly internally as well. Which >> other improvements do you have in mind for your new format? >> >> >> >> And of course: Please really have a look at EXISTING formats >> to avoid re-inventing the wheel. Maybe ext2/3/4 already has >> what you need while allowing a relatively small driver, too? >> >> https://en.wikipedia.org/wiki/Comparison_of_file_systems#Limits >> >> https://en.wikipedia.org/wiki/FATX#Derivatives >> (only FAT+ as used on some DR variants might be a bit useful) >> >> https://en.wikipedia.org/wiki/HFS_Plus#Linux >> >> https://en.wikipedia.org/wiki/Ext2 (ext3/ext4 are more complex) >> >> Even a more complete UDF implementation might be cool for flash >> next to DVD: https://en.wikipedia.org/wiki/Universal_Disk_Format >> >> Plus some other filesystems which seemed "too licensed" or too >> complex and too feature rich to me, so start reading as above. >> For example ZFS & Btrfs are probably too comprehensive for DOS. >> >> For general FS inspiration, a Be File System book and overview: >> >> http://www.nobius.org/~dbg/ >> http://arstechnica.com/open-source/news/2010/06/the-beos-filesystem.ars >> >> In short, I guess ext2 and HFS+ might be good choices for "being >> the next filesystem to have improved free DOS drivers available"? >> See also some already existing filesystem drivers for those two: >> >> http://www.catacombae.org/hfsexplorer/ >> >> http://www.ext2fsd.com/?page_id=2 which is downloadable from: >> http://sourceforge.net/projects/ext2fsd/files/ >> >> http://uranus.chrysocome.net/linux/ext2ifs.htm >> >> http://www.ibiblio.org/filesystems/howto/Filesystems-HOWTO-6.html >> ftp://sunsite.unc.edu/pub/Linux/system/filesystems/ext2/ >> >> Cheers, Eric >> >> >> >> PS: Level 3 of ISO9660 also sounds nice, do DOS drivers support it? >> https://en.wikipedia.org/wiki/ISO_9660 >> >> PPS: Does anybody still have a new copy of the ext2 DOS "LTOOLS"? >> The download is no longer available after 18 years due to EOL. The >> http://www.ibiblio.org/pub/linux/utils/dos/ copy is old, from 2001. >> >> >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Freedos-devel mailing list >> Freedos-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freedos-devel > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel > ------------------------------------------------------------------------------ _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
