Hi all!
Is there some problem to achieve it?
If it is possible, is there some specific doc about or I just have
to do a normal install?
Thank you,
Tom Lobato
www.tinecon.com.br
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Xen-users@lists.xensource.com
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I don''t think it''s possible if your CPU is 32bit. On Wed, Apr 9, 2008 at 10:33 PM, Antonio Lobato <lobato@tinecon.com.br> wrote:> > Hi all! > > Is there some problem to achieve it? > If it is possible, is there some specific doc about or I just have > to do a normal install? > > > Thank you, > > > Tom Lobato > www.tinecon.com.br > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Antonio Lobato wrote:> Hi all! > > Is there some problem to achieve it? > If it is possible, is there some specific doc about or I just have > to do a normal install? > > > Thank you, > > > Tom Lobato > www.tinecon.com.br > > > _______________________________________________ >I don''t think this is possible at all. Even as a guest, since the host is 32bit -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> Is there some problem to achieve it? > If it is possible, is there some specific doc about or I just have > to do a normal install?If your host CPU is 32-bit then there''s no way of running a 64-bit guest using Xen - sorry. You could try Qemu (http://www.qemu.org) which is a full emulator and thus might be able to do what you want. If you have a 64-bit CPU then you can (running a 64-bit Xen) run 32-bit *and* 64-bit Xen guests simultaneously. You can even run a 32-bit dom0 ("host" operating system) but /Xen itself has to be 64-bit/, which means that your /hardware/ has to be 64-bit. I hope this clears up any confusion. Please ask more questions if you''re still unsure! Cheers, mark -- Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Mark Williamson wrote:>> Is there some problem to achieve it? >> If it is possible, is there some specific doc about or I just have >> to do a normal install? >> > > If your host CPU is 32-bit then there''s no way of running a 64-bit guest using > Xen - sorry. You could try Qemu (http://www.qemu.org) which is a full > emulator and thus might be able to do what you wantI have tried to install 64-bit Debian Etch on 32-bit Ubuntu with qemu, accidentally at home with no success. I got the error about I can''t do that. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Mark Williamson escreveu:
Is there some problem to achieve it?
If it is possible, is there some specific doc about or I just have
to do a normal install?
If your host CPU is 32-bit then there''s no way of running a 64-bit
guest using
Xen - sorry. You could try Qemu (http://www.qemu.org) which is a full
emulator and thus might be able to do what you want.
If you have a 64-bit CPU then you can (running a 64-bit Xen) run 32-bit *and*
64-bit Xen guests simultaneously. You can even run a 32-bit dom0
("host"
operating system) but /Xen itself has to be 64-bit/, which means that
your /hardware/ has to be 64-bit.
I hope this clears up any confusion. Please ask more questions if
you''re
still unsure!
great! thank you all!
Unfortunately it is what I though :(
I`m building this guest as a live backup of a physical 64bit
machine running debian etch.
So, I think the best way, in such case, is to run a 32bit guest,
configure all services like the original and only make daily
copies of critical data (databases, mailboxes and some
variable confs like squid acls).
Regarding qemu, it appears very good, but has not the excellent
performance of xen, am I right?
Tom Lobato
www.tinecon.com.br
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
> > If your host CPU is 32-bit then there''s no way of running a 64-bit guest > > using Xen - sorry. You could try Qemu (http://www.qemu.org) which is a > > full emulator and thus might be able to do what you want > > I have tried to install 64-bit Debian Etch on 32-bit Ubuntu with qemu, > accidentally at home with no success. I got the error about I can''t do > that.I think that may now be possible, but I could be wrong... Certainly the "status page"[1] seems to suggest it would work. Maybe the latest version has improved things since you tried it... Cheers, mark [1] http://fabrice.bellard.free.fr/qemu/status.html -- Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> great! thank you all! > Unfortunately it is what I though :( > > I`m building this guest as a live backup of a physical 64bit > machine running debian etch. > So, I think the best way, in such case, is to run a 32bit guest, > configure all services like the original and only make daily > copies of critical data (databases, mailboxes and some > variable confs like squid acls).Yes, that sounds sensible. Be careful to take measures to ensure that the backups are consistent; just copying the files that are in use by the applications may result in inconsistent copies being made, which could result in data loss. For really good reliability you ought to take a look in to recommended backup practices for each app you want to sync data for.> Regarding qemu, it appears very good, but has not the excellent > performance of xen, am I right?There are various performance arguments but if you''re running 64-bit on a 32-bit host using Qemu then performance will suffer a lot. I don''t think you''d want to run an active server like that. Cheers, Mark -- Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Mark Williamson escreveu: great! thank you all! Unfortunately it is what I though :( I`m building this guest as a live backup of a physical 64bit machine running debian etch. So, I think the best way, in such case, is to run a 32bit guest, configure all services like the original and only make daily copies of critical data (databases, mailboxes and some variable confs like squid acls). Yes, that sounds sensible. Be careful to take measures to ensure that the backups are consistent; just copying the files that are in use by the applications may result in inconsistent copies being made, which could result in data loss. For really good reliability you ought to take a look in to recommended backup practices for each app you want to sync data for. Yes, normaly I use mysqlhotcopy for mysql, since all my DBs uses myisam storage engine, and rsync (through rsnapshot) for mailboxes, since I use dovecot/maildir for pop3 server. Then, all the rest are static conf files, like squid.conf and others. Thank you very much by the valuable info and tips! Tom Lobato tinecon.com.br _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users