Re: [Qemu-devel] feature request: changing boot device in the monitor
2007/12/3, Daniel P. Berrange <[EMAIL PROTECTED]>: > On Mon, Dec 03, 2007 at 01:34:16PM +, Gildas wrote: > > Hi, > > > > I don't know whether this is an easy one or not and if it will apply > > to all archs, but I'd like to see an option in the monitor to > > change/override the value given for -boot. > > > > This way, for instance if you install a VM from a CDROM using "-boot > > d", you would be able to restart it on the hard-drive from the monitor > > with something like "boot c" followed by "system_reset". > > > > I know there is still the workaround of stopping the emulation and > > restarting it with a different set of commands, but when remotely > > accessing a VM with a lots of redirection/connection, it's not very > > handy. > > > > Of course there is also an orthogonal way of doing this consisting in > > adding a boot menu to the BIOS. Implementing both ways would of course > > be nice, but the monitor solution would have my preference :) > > There's a patch for this floating around. > > http://www.mail-archive.com/[EMAIL PROTECTED]/msg06675.html > > We use it in KVM / Xen on Fedora. Not sure offhand if Bochs project ever > accepted the patch in their upstream for the BIOS. > > Dan. > -- > |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| > |=- Perl modules: http://search.cpan.org/~danberr/ -=| > |=- Projects: http://freshmeat.net/~danielpb/ -=| > |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=| Hi Daniel, Thanks for the link. I somehow managed not to see it. For the record, there's a later version of the patch in the same thread: http://www.mail-archive.com/[EMAIL PROTECTED]/msg07058.html Which version do you include in Fedora? As far as I can tell, none of the patches were applied to the mainstream bochs rombios.c. Since qemu is shipped with a binary bios image and a diff set for bochs' bios, can this patch be added to qemu's diff set and included in the default bios? Regards, Gildas
Re: [Qemu-devel] feature request: changing boot device in the monitor
2007/12/3, Dan Kenigsberg <[EMAIL PROTECTED]>: > On Mon, Dec 03, 2007 at 01:34:16PM +, Gildas wrote: > > Hi, > > > > I don't know whether this is an easy one or not and if it will apply > > to all archs, but I'd like to see an option in the monitor to > > change/override the value given for -boot. > > > > This way, for instance if you install a VM from a CDROM using "-boot > > d", you would be able to restart it on the hard-drive from the monitor > > with something like "boot c" followed by "system_reset". > > > > I know there is still the workaround of stopping the emulation and > > restarting it with a different set of commands, but when remotely > > accessing a VM with a lots of redirection/connection, it's not very > > handy. > > And there's another workaround: you can now start qemu with -boot dc , do > your thing with the cd image, go to monitor, eject the cd, and > system_reset. This time, since there's no cd, the bios will boot from > the hard drive. Just as it happens in OS installation on real hardware. > > Dan. Nice trick. Still a "boot" option in the monitor would be nicer/more flexible, so if someone feel like implementing this feature... :) Gildas
Re: [Qemu-devel] feature request: changing boot device in the monitor
On Mon, Dec 03, 2007 at 01:34:16PM +, Gildas wrote: > Hi, > > I don't know whether this is an easy one or not and if it will apply > to all archs, but I'd like to see an option in the monitor to > change/override the value given for -boot. > > This way, for instance if you install a VM from a CDROM using "-boot > d", you would be able to restart it on the hard-drive from the monitor > with something like "boot c" followed by "system_reset". > > I know there is still the workaround of stopping the emulation and > restarting it with a different set of commands, but when remotely > accessing a VM with a lots of redirection/connection, it's not very > handy. And there's another workaround: you can now start qemu with -boot dc , do your thing with the cd image, go to monitor, eject the cd, and system_reset. This time, since there's no cd, the bios will boot from the hard drive. Just as it happens in OS installation on real hardware. Dan.
Re: [Qemu-devel] feature request: changing boot device in the monitor
On Mon, Dec 03, 2007 at 01:34:16PM +, Gildas wrote: > Hi, > > I don't know whether this is an easy one or not and if it will apply > to all archs, but I'd like to see an option in the monitor to > change/override the value given for -boot. > > This way, for instance if you install a VM from a CDROM using "-boot > d", you would be able to restart it on the hard-drive from the monitor > with something like "boot c" followed by "system_reset". > > I know there is still the workaround of stopping the emulation and > restarting it with a different set of commands, but when remotely > accessing a VM with a lots of redirection/connection, it's not very > handy. > > Of course there is also an orthogonal way of doing this consisting in > adding a boot menu to the BIOS. Implementing both ways would of course > be nice, but the monitor solution would have my preference :) There's a patch for this floating around. http://www.mail-archive.com/[EMAIL PROTECTED]/msg06675.html We use it in KVM / Xen on Fedora. Not sure offhand if Bochs project ever accepted the patch in their upstream for the BIOS. Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=|
[Qemu-devel] feature request: changing boot device in the monitor
Hi, I don't know whether this is an easy one or not and if it will apply to all archs, but I'd like to see an option in the monitor to change/override the value given for -boot. This way, for instance if you install a VM from a CDROM using "-boot d", you would be able to restart it on the hard-drive from the monitor with something like "boot c" followed by "system_reset". I know there is still the workaround of stopping the emulation and restarting it with a different set of commands, but when remotely accessing a VM with a lots of redirection/connection, it's not very handy. Of course there is also an orthogonal way of doing this consisting in adding a boot menu to the BIOS. Implementing both ways would of course be nice, but the monitor solution would have my preference :) Regards, Gildas
