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. -Eric > -Eric > >> ric >> > -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
