Hi, Here's a question regarding ext3, jbd and mkfs. I'm not 100% confident this is the right list, got it from MAINTAINERS for ext3 and jbd. Please correct me if this is wrong. As far as I could tell from brief looking at jbd code, it seemed to me that the only thing that has to be reset during the filesystem creation time is journal superblock (talking about the default case when journal resides within an ext3 partition). However, currently mke2fs -j would zero every journal block no matter what. So, the question is: can this zeroing really be avoided in mkfs? I tried commenting-out ext2fs_zero_block() in mkjournal_proc() and it seems to speed up mkfs a great deal while the kernel is still able to mount the partition afterwards. Also, for the sake of experiment, I filled the partition with urandom's contents before doing the modified mkfs and it still works. My next step in this direction would be to go through jbd code, but before doing that, I thought, I'd ask here. Please CC me in replies as I'm not (yet) subscribed. Regards, -- Alex -- 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
