You haven't said what kernel you are using, but this really does look like storage device issue. You mentioned this was a RHEL cluster? Have you considered opening a support ticket with Red Hat? 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