I'm trying to enable metadata_csum on an ext4 raid1 device, but end up with a semi-cryptic error. (This is probably the same thing Tomasz Chmielewski reported in http://www.spinics.net/lists/linux-ext4/msg33139.html ) Is this issue being tracked someplace? $ uname -ar Linux dev 3.5.0-6-generic #6-Ubuntu SMP Mon Jul 23 19:52:14 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux $ git clone git://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git $ ./configure [snip] $ make progs [snip] $ sudo misc/tune2fs -O metadata_csum /dev/md1 tune2fs 1.42.3 (14-May-2012) rewrite_directory: Unknown code Ijv 64 while rewriting directories The error code changes when I re-run tune2fs (to [a-zA-Z]*3 64). I've tried this on the master, "next", & "pu" git branches, all with errors. $ debugfs -R 'stats' /dev/md1 > http://web.mit.edu/semenko/Public/debugfs-md1.txt Best, Nick -- Nick Semenkovich Laboratory of Dr. Jeffrey I. Gordon Medical Scientist Training Program School of Medicine Washington University in St. Louis http://web.mit.edu/semenko/ -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html