Date: Thu, 8 Aug 2002 00:56:49 +0000 From: Shantanu Mahajan <shantanoo@ieee.org> To: freebsd-questions@freebsd.org Cc: ketanu@wanadoo.fr Subject: Re: Sharing file ystems with Linux (Debian) Message-ID: <200208080056.49286.shantanoo@ieee.org>
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-------------- original msg ------------------------ 1/Can'get no satisfaction* After little investigation and experimentation, it seems that the only filesystem both readable and writable for the two oses (OS's ?) are msdos/vfat, samba and NFS, with the inconvenient the latters are for networking, and the former do not support attributes nor owner, nor symbo= lic links for the files. Thanks to tar msdos filesystems can be used as `transaction space' for the two oses, but is unsuitable to be used as a `true' filesystem. *2/But, why ?* Although ext2fs and BSD flavour of ufs are both supported by opensource software (the Linux Kernel, i.e. Linux, and the FreeBSD one), there is n= o support allowing full read/write access for the `non standard file system= ' within each kernel. Wondering why, i could read somewhere, the reason was= , more or less, that abstraction used to describe the file systems on each kernels was not easy to coerce to the other one. *3/Circumvent the trouble (and question)* The lake of filesystem type that shares good between may be annoying, so = wa may try to circumvent it.=20 Since it seems hard to enable full support for (e.g.) ext2fs in the FreeB= SD kernel, it may be good to push the problem outside the kernel. Here is the idea (and the question): could we develop a software that wou= ld export a given ext2fs as Network File System on the local loopback, to al= low the kernel access this filesystem via the NFS interface. I was told of a software based on this idea, called ext2anywhere, that is= in fact, ext2 under windows, but works good (as far as i was told). Since my science on kernels and filesystems is rather thin (true OCB!), i= t would be fine if someone more clever on this gave advice on this. With su= ch a NFS server for accessing ext2fs, we will meet concurrence problemes ove= r the slice/partition presenting the filesystem, but it could be useful and maybe easier to develop than kernel-inside support. - --=20 ---------------- end of msg -------------- First of all, FBSD can read and write ext2fs. You have to compile the ker= nel=20 for that. Following line should be there in you kernel conf. file before=20 compilation. options EXT2FS For NTFS you can add following (read-only) options NTFS For changing the kernel (GENERIC) -------------- cd /usr/src/sys/i386/conf echo "options EXT2FS" >> GENERIC cd /usr/src make kernel KERNCONF=3DGENERIC --------------- To mount ext2fs use mount_ext2fs command. Hope this helps :-) I am using it successfully. Regards, Shantanu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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