I am not disagreeing here I am just point an option out. Ciao Remo
On Feb 6, 2014, at 10:41, Aryeh Friedman <aryeh.fried...@gmail.com> wrote: > Depends on your needs... if your only need is to save space then your right > use qcow2 but if you have any need for stability or robustness use raw (qcow2 > for example is much susceptible to the kinds of results like the one the > original poster reported and later confirmed in the event of a unscheduled > host reboot... if the default cache mode was "none" instead "writeback" this > would be OK but writeback is known to [by qemu's own documentation and other > sources] to be unsafe in a power failure see > http://pic.dhe.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=%2Fliaat%2Fliaatbpkvmguestcache.htm... > the only problem with "none" is it gives beyond awful performence) > > > On Thu, Feb 6, 2014 at 10:29 AM, Remo Mattei <r...@italy1.com> wrote: > Yes but raw data keeps the entire space so if you have a 40gb drive and only > use 1gb you are stuck with 40gb. Whereas, qcow2 does not. > > Ciao > Remo > > On Feb 6, 2014, at 9:50, Aryeh Friedman <aryeh.fried...@gmail.com> wrote: > >> qcow2 is almost certainly the worst choice here because if the hypervisor >> for some reason becomes unusable then the data is unreadable by some >> hypervisors... raw is much more portabls >> >> >> On Thu, Feb 6, 2014 at 9:19 AM, Bhattacharjee, Arindam (Arindam) >> <arindam.bhattachar...@alcatel-lucent.com>wrote: >> Probably you need to create qcow2 image out of iso image and then use that >> qcow2 to create VMs from Openstack. >> >> Follow the instructions similar to this: >> >> http://docs.openstack.org/image-guide/content/ubuntu-image.html >> >> >> >> >> >> From: Narayanan, Krishnaprasad [mailto:naray...@uni-mainz.de] >> Sent: Thursday, February 06, 2014 7:19 AM >> To: openstack@lists.openstack.org >> Subject: [Openstack] Error while booting VM >> >> >> >> Hallo all, >> >> >> >> Can I seek help for the problem described below? >> >> >> >> I have a VM running Ubuntu 12.04 in my OpenStack cloud and when it boots, I >> get an error message that says “Error: invalid magic number, error: You need >> to load the kernel first. Press any key to continue”. >> >> >> >> Can I know how to make the VM boot? >> >> >> >> Thanks, >> >> Krishnaprasad >> >> >> >> >> >> >> _______________________________________________ >> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> >> >> >> -- >> Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org >> _______________________________________________ >> >> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> >> !DSPAM:1,52f3aa0339243727140205! > > > > > -- > Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org > !DSPAM:1,52f3af1856541323311281!
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