I think we should discuss adding/changing this functionality. I have had many new users assume that booting from an iso image would give them a root drive which they could snapshot. I was hoping that the new block device mapping code would allow something like this, but unfortunately there isn’t a way to do it there either. You can boot a flavor with an ephemeral drive, but there is no command to snapshot secondary drives.
Vish On Jul 25, 2014, at 4:22 PM, Maksym Lobur <mlo...@mirantis.com> wrote: > Hi Vish! > > Appreciate your feedback! Are there some significant pitfalls that forced > Nova team to decide that? > > Currently I'm testing my local nova modifications to get real boot from ISO > functionality like described in the spec. I'm fetching ISO image from glance > into the separate file under the instances/uuid/ dir, attaching it as a CDROM > and boot from it. I also do a blank root drive 'disk' which I use to install > OS to. > > Are there any things require extra attention? Any pitfalls in such an > approach? > > Best regards, > Max Lobur, > OpenStack Developer, Mirantis, Inc. > > Mobile: +38 (093) 665 14 28 > Skype: max_lobur > > 38, Lenina ave. Kharkov, Ukraine > www.mirantis.com > www.mirantis.ru > > > On Tue, Jul 22, 2014 at 8:57 AM, Vishvananda Ishaya <vishvana...@gmail.com> > wrote: > This is somewhat confusing, but long ago the decision was made that booting > from an ISO image should use the ISO as a root drive. This means that it is > only really useful for things like live cds. I believe you could use the new > block device mapping code to create an instance that boots from an iso and > has an ephemeral drive as well but I haven’t tested this. > > Vish > > On Jul 22, 2014, at 7:57 AM, Maksym Lobur <mlo...@mirantis.com> wrote: > >> Hi Folks, >> >> Could someone please share his experience with Nova "Boot from ISO" feature >> [1]. >> >> We test it on Havana + KVM, uploaded the image with DISK_FORMAT set to >> 'iso'. Windows deployment does not happen. The VM has two volumes: one is >> config-2 (CDFS, ~400Kb, don't know what that is); and the second one is our >> flavor volume (80Gb). The windows ISO contents (about 500Mb) for some reason >> are inside a flavor volume instead of separate CD drive. >> >> So far I found only two patches for nova: vmware [2] and Xen [3]. >> Does it work with KVM? Maybe some specific nova configuration required for >> KVM. >> >> [1] https://wiki.openstack.org/wiki/BootFromISO >> [2] https://review.openstack.org/#/c/63084/ >> [3] https://review.openstack.org/#/c/38650/ >> >> >> Thanks beforehand! >> >> Max Lobur, >> OpenStack Developer, Mirantis, Inc. >> >> Mobile: +38 (093) 665 14 28 >> Skype: max_lobur >> >> 38, Lenina ave. Kharkov, Ukraine >> www.mirantis.com >> www.mirantis.ru >> _______________________________________________ >> OpenStack-dev mailing list >> OpenStack-dev@lists.openstack.org >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > _______________________________________________ > OpenStack-dev mailing list > OpenStack-dev@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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