-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 El Tue, 21 May 2013 20:54:25 -0400 Andy Grimm <agrimm@xxxxxxxxx> escribió: > On Tue, May 21, 2013 at 5:34 PM, Matthew Miller > <mattdm@xxxxxxxxxxxxxxxxx>wrote: > > > On Wed, May 15, 2013 at 11:18:04AM -0400, Matthew Miller wrote: > > > > 2) I also commented out the "Zeroing out empty space" > > > > postinstall > > stuff, > > > > because it drastically increases the image build time for not > > > > much > > benefit, > > > > IMHO. > > > One time image build cost vs. whatever benefit multipled by every > > > time > > the > > > image is used. :) > > > > To put some numbers behind it, the compressed qcow2 image with the > > dd to zero empty space is 215M out of appliance-creator. Without > > it, it's 242M. > > > > Two things here: First, I did not mean to imply that I thought > zeroing out the disk was a completely useless operation. I merely > was not willing to pay the penalty for building my test image, and I > was trying to be completely honest about exactly how I built my > image. Second, I think one of the reasons this operation annoys me > is that I'm used to using ami-creator to create filesystem images > (rather than full-disk images), and in that scenario I start with a > very small filesystem (1 GB or less) and grow it after it's created. > The idea of having a 10 GB disk, filling less than 3% of its > capacity, and then having to write zeros to the other 97%, most of > which was not actually needed for the install, seems pretty > suboptimal. If there are tools to optimize it (fstrim or whatever), > that's great. Otherwise, I'd be considering some hack like: make a > small partition on the disk, do the install, zero out bytes on the > partition, and then repartition. its actually completely wasted in the current processes. koji desparsifies the images when uploading to the hub. so we end up with 10gb files anyway Dennis -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlGefDgACgkQkSxm47BaWfdbfACfSyVu0aGPEsE5WxhZA7swlWIK Z90AnRBtGPA4NCPoqbRxn9L6PuoikXoJ =Yenq -----END PGP SIGNATURE----- _______________________________________________ cloud mailing list cloud@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/cloud
