Le ven. 18 avril 2014 10:45:03 CEST, Lukáš Czerner a écrit : > > The way you're using dd for this purpose is wrong. I > said that dd can write to the file without truncating it first, but > it's not doing it by default. You have to use 'notrunc' see man > page. But I think that it would not have made a difference anyway. > Thansk, I stand corrected. I'll try it to see whether I can get better results with it. > And even though you can turn off backup superblock you > can not turn off writing group descriptors. > While we're at it, how can I do this? I searched the mkfs.ext4/mke2fs.conf/ext4/tune2fs man pages for the option to turn off writing backup superblock you mentioned, however the closest I found is tune2fs -O ^sparse_super which is part of the defaults mke2fs.conf options... Could you point me at it so that I can try to get this source of non-contiguity away? Thanks, -Bastien -- 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
