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?
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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