Confused about some E2fsprogs notes

Bruce Dubbs bruce.dubbs at
Sun Oct 5 16:43:32 PDT 2008

Randy McMurchy wrote:
> Hi all,
> This message is directed to experienced LFS Editors, but
> FYI for everyone else.
> There's a note in the 'packages.ent' file that says:
> " When updating e2fsprogs, remember to check the list
>    of acceptable features that can be shown by debugfs in
>    chapter02/creatingfilesystem.xml"
> That list contains this:
> has_journal, ext_attr, resize_inode, dir_index, filetype,
> sparse_super, large_file, needs_recovery
> But when I run the program suggested to determine these
> features:
> rml at rmlscsi: ~/build > sudo /sbin/debugfs -R feature /dev/sda3
> debugfs 1.41.1 (01-Sep-2008)
> Filesystem features: has_journal filetype needs_recovery sparse_super large_file
> it shows only a subset of the features the book says.
> I don't really know how to determine what to do at this point.
> I show many less features than the book does. What should I do
> to ensure the feature list is correct?

I'm pretty sure this only lists the actual feature set of the partition, not the 
list of all possible options.   See

sudo /sbin/dumpe2fs /dev/sda3 | grep features

   -- Bruce

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