The default ephemeral filesystem in Nova is ext3 (for Linux). However ext3 is IMNSHO a pretty poor choice given ext4's existence. I can totally accept that other fs's like xfs might be contentious - but is there any reason not to make ext4 the default?
I'm not aware of any distro that doesn't have ext4 support - even RHEL defaults to ext4 in RHEL5. The reason I'm raising this is that making a 1TB ext3 ephemeral volume does (way) over 5GB of writes due to zeroing all the inode tables, but an ext4 one does less than 1% of the IO - 14m vs 7seconds in my brief testing. (We were investigating why baremetal deploys were slow :)). -Rob -- Robert Collins <rbtcoll...@hp.com> Distinguished Technologist HP Converged Cloud _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
