hmm, on Wed, Dec 08, 2010 at 12:47:06PM +0100, Peter J. Philipp said that
> -O filesystem-format
> Select the filesystem-format.
>
> 0 `GOOD_OLD_REV'; this option is primarily used to
> build root file systems that can be understood by
> old or dumb firmwares for bootstrap. (default)
> 1 `DYNAMIC_REV'; various extended (and sometimes
> incompatible) features are enabled (though not all
> features are supported on OpenBSD). Currently
> only the following features are supported:
> ...<some cut>...
> LARGEFILE Enable files larger than 2G
> bytes.
you left out the interesting bit :]
if (fs->e2fs.e2fs_rev <= E2FS_REV0) {
/* Linux automagically upgrades to REV1 here! */
return (EFBIG);
}
there was a funny chicken-egg problem with this.
the e2fsprogs' mkfs.ext2 does not set 'large_file'
by default either, but as the linux kernel "automagically
upgrades to REV1" whenever a process tries to write a bigger
file for the first time, it is not really a problem.
but naturally, people with linux background trying to use
ext2fs on different systems get to know about this flag after
lot of hair pulling.
i have asked Theodore in the past to enable this feature
by default, but looks like it never happened.
i think it could save a lot of time and sanity if the
openbsd kernel emitted a dmesg when someone tries
to write a bigger file..
Index: ext2fs_inode.c
===================================================================
RCS file: /cvs/src/sys/ufs/ext2fs/ext2fs_inode.c,v
retrieving revision 1.43
diff -u -r1.43 ext2fs_inode.c
--- ext2fs_inode.c 23 Nov 2008 23:52:35 -0000 1.43
+++ ext2fs_inode.c 10 Dec 2010 16:09:33 -0000
@@ -83,6 +83,8 @@
if (fs->e2fs.e2fs_rev <= E2FS_REV0) {
/* Linux automagically upgrades to REV1 here!
*/
+ log(LOG_NOTICE,
+ "ext2fs revision does not support large
files\n");
return (EFBIG);
}
if (!(fs->e2fs.e2fs_features_rocompat
-f
--
life is lived forwards, but understood backwards.
