I've been trying to track down the problems in ext4's online-resizing, and one of the ones which is most noticeable is that online resizing mballoc has some specific data structures which need to be enlarged when the number of block groups in the filesystem are grown dynamically. Specifically, the s_group_info array; in the current ext4 patch queue, this isn't happening, which means after the online resizing operation, when the filesystem is unmounted, ext4_put_super() calls ext4_mb_release(), which then iterates over s_group_info array, and then this triggers a kernel oops. Is clusterfs running with mballoc in production? If so, how was this problem fixed? Did we miss a patch to make sure that on-line resizing worked with mballoc enabled? Thanks, regards, - Ted -- 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
