Date: Sun, 3 Aug 1997 16:53:26 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: dburr@POBoxes.com (Donald Burr) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: ext2fs and FreeBSD Message-ID: <199708032153.QAA00790@dyson.iquest.net> In-Reply-To: <Pine.BSF.3.96.970803135446.965A-100000@DonaldBurr.DonaldBurr.dyn.ml.org> from Donald Burr at "Aug 3, 97 02:08:27 pm"
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> I need a way of exchanging large amounts of data between Linux and > FreeBSD, that does NOT involve a network. I have Jaz drives on both > machines, so that seemed like the perfect solution. Unfortunately, > Linux's UFS support is lame (besides, it's read-only), and since I need > long filenames (and FreeBSD does not support Win95, aka VFAT), that option > is out as well. > > Browsing through my kernel config file (based on LINT), I notice there is > an option for "EXT2FS"... Aha! This sounds like just the thing. So I > compiled a kernel with it, formatted a Jaz cartridge and mke2fs'd it on my > Linux box, and mounted it on my FreeBSD machine. So far so good... > > But I have a question: How "stable" is the e2fs support? Is it buggy, has > it crashed, etc? > It isn't super (UFS) stable, but generally works, and there is a pending commit for a bug that keeps the filesystems from being properly unmounted while an EXT2FS filesystem is mounted. The most important thing is to unmount your EXT2FS filesystem before rebooting. > > Also, there is no "fsck" program for ext2, and the standard /sbin/fsck > doesn't know about ext2fs... Is there one for FreeBSD I should grab and > compile, or can I use the Linux "e2fsck" binary? (I have linux binary > support enabled) > The Linux one ports pretty easily. FreeBSD doesn't support the raw device size ioctl, so the ext2fsck needs to be slightly modified. Sorry that I haven't gotten to it, and it hasn't been an extremely high priority... But, for transient copying of file structures, etc it works fine. I have even run Linux binaries from a mounted Linux root filesystem -- but again I would'nt use it in a critical production ISP situation or the like. I'll leave a copy of the e2fs tools (essentially the same as the Linux ones on ftp://ftp.freebsd.org/pub/FreeBSD/incoming/e2.cpio.gz ) They are incomplete, and might not work (I have no EXT2FS partitions to play with right now.) It'll take a few hours before it will appear. John
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