creation time stamps for ext4 ?

Björn JACKE bjacke at
Thu Oct 5 19:23:12 UTC 2006

On 2006-10-05 at 12:55 -0400 Theodore Tso sent off:
> > I've given this some thought for adding as part of the nsec timestamp
> > patch.  That is more feasable if we move the nsec ctime into the main
> > inode to double as the version field.
> Shoehorning an extra creation time field into the inode is relatively
> easy, but it's also necessary to have system calls to get and set the
> creation time.  The stat structure doesn't have room for the creation
> time, so that means a new version of the stat structure exported the
> kernel, and a new version of the stat structure exported by glibc.
> So there are VFS and glibc changes necessary to make this be useful.
> But that doesn't prevent us from reserving space in the inode and
> starting to fill it in with the creation time, although it may be
> quite a while before it will be easily available to user programs like
> Samba.

yes, probably. But it's a reasonable effort to start that at some 
time. It's good if ext3 developers have it in mind already now.
Should I open a feature request at for the needed 
VFS changes?


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