On Wed, Oct 05, 2011 at 10:42:37AM -0500, Eric Sandeen wrote: > On 10/5/11 9:58 AM, Eric Sandeen wrote: > > On 10/4/11 6:53 PM, Ric Wheeler wrote: > > ... > > >> Note that ext4 has a new feature that allows inodes to be initialized in > >> the > >> background, so you will see much quicker mkfs.ext4 times as well :) > > > > right; for large ext4 fs use (or testing), try > > > > # mkfs.ext4 -E lazy_itable_init=1 /dev/blah > > > > this will cause it to skip inode table initialization, and speed up mkfs a > > LOT. > > It'll also keep sparse test images smaller. > > > > IMHO this should probably be made default above a certain size. > > > > The tradeoff is that inode table initialization happens in kernelspace, > > post-mount - > > with efforts made to do it in the background, and not impact other I/O too > > much. > > Sorry, Lukas reminds me that this should already be the default mode, with a > new enough kernel and new enough e2fsprogs. Rawhide should meet those > criteria.
lazy_itable_init is always on by default now? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
