Hi, I was reading the book "File System Forensic Analysis" and came across this paragraph. ExtX has optional features that are organized into three categories based on what the operating system should do if it encounters a file system with a feature that it does not support. The first category is the compatible features, and if the OS does not support one of these features, it can still mount the file system and continue as normal. Examples of this include allocation methods, the existence of a file system journal, and extended attributes. There are also incompatible features, and if an OS encounters one of these, it should not mount the file system. An example of this includes compression. Lastly, a feature can be a read only compatible feature. When an OS encounters one of these features that it does not support, the file system should be mounted as read only. Examples of this include large file support and using B-trees to sort directories instead of an unsorted list. In above I could not understand what is meant by OS supported ??? Isn't for a filesystem the features are filesystem specific. or OS here means the VFS layer ??? How can an OS support or not support B-trees or journalling, it has to be filesystem dependant......isn't it ? -- Thanks & Regards, ******************************************** Manish Katiyar ( http://mkatiyar.googlepages.com ) 3rd Floor, Fair Winds Block EGL Software Park Off Intermediate Ring Road Bangalore 560071, India *********************************************** -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
