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 symbolic 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 no 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. Since it seems hard to enable full support for (e.g.) ext2fs in the FreeBSD 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 would export a given ext2fs as Network File System on the local loopback, to allow 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!), it would be fine if someone more clever on this gave advice on this. With such a NFS server for accessing ext2fs, we will meet concurrence problemes over the slice/partition presenting the filesystem, but it could be useful and maybe easier to develop than kernel-inside support. - -- ---------------- end of msg -------------- First of all, FBSD can read and write ext2fs. You have to compile the kernel for that. Following line should be there in you kernel conf. file before 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=GENERIC --------------- 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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