search for: sgabios

This tedious workaround avoids a 0.26 second pause when using sgabios (the Serial Graphics Adapter). It's basically a workaround for buggy code in sgabios, but much easier than fixing the assembler. --- src/conn-socket.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/src/conn-socket.c b/src/conn-socket.c ind...

This tedious workaround avoids a 0.26 second pause when using sgabios (the Serial Graphics Adapter). It's basically a workaround for buggy code in sgabios, but much easier than fixing the assembler. --- src/conn-socket.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/src/conn-socket.c b/src/conn-socket.c ind...

On Tuesday 22 March 2016 19:05:24 Richard W.M. Jones wrote: > This tedious workaround avoids a 0.26 second pause when using sgabios > (the Serial Graphics Adapter). It's basically a workaround for buggy > code in sgabios, but much easier than fixing the assembler. > --- > src/conn-socket.c | 32 +++++++++++++++++++++++++++++++- > 1 file changed, 31 insertions(+), 1 deletion(-) > > diff --git a/src/co...

On Wed, Mar 23, 2016 at 10:39:43AM +0100, Pino Toscano wrote: > If I read this correctly, the newly added memmem would be executed for > every read data from the daemon socket: > read_data -> handle_log_message -> memmem I think only from the console socket (not the daemon socket, and hence not download APIs). However I will see if it's possible to limit this to the accept

...mand reduces boot times considerably. > However I'm not sure if it is safe. See the question I posted on > qemu-devel: > > http://thread.gmane.org/gmane.comp.emulators.qemu/402194 > > At the moment, about 50% of the time is consumed by SeaBIOS. Of this, > about ⅓rd is SGABIOS (it contains a useless ¼s sleep waiting for a > keypress ... ffs!) Ah, I didn't have sgabios installed, and it complained it couldn't find an event (qemu:overhead?). Installed it and I got similar results to yours, the largest overhead is BIOS: https://gist.github.com/anonymous/37cfb3d4...

...up over vnc. Is there a way to have >> that show up over serial? >> > > I believe > <bios useserial='yes'/> > is the option that makes this work. > http://libvirt.org/formatdomain.html#elementsOSBIOS Moreover, make sure you use a serial enabled BIOS, like sgabios [1]. Standard seabios doesn't support serial line (well, it was quite a while ago that I've tested this and it didn't back then, maybe things have changed since then). Michal 1: https://code.google.com/p/sgabios/

On 10/12/20 2:14 PM, john doe wrote: >> <snip/> > > I sent privately the requested xml file to 'Peter Krempa > <pkrempa@redhat.com>'. > Peter Krempa 's privately answered me back suggesting to add the > following in the domain xml file: Solving things privately doesn't help the community. > > > <bios useserial='yes'/>

...it HEAD and try it. > Is this the preferred way, or is there a git branch/repo somewhere that I missed which would already have these applied? I've just pushed what I'm working on to my fork of the repo (https://github.com/rwmjones/libguestfs/commits/master). > Ah, I didn't have sgabios installed, and it complained it couldn't > find an event (qemu:overhead?). Right - it's very sensitive to the exact debug output. > Installed it and I got similar results to yours, the largest > overhead is BIOS: > https://gist.github.com/anonymous/37cfb3d4eb3d3a1c86b2 Your q...

...;/> >>>>        <bios useserial='yes'/> >>>>      </os> >>>> >>> >>> Try adding: >>> >>>      <loader type='rom'>/usr/share/seabios/bios.bin</loader> Darn, this should have been sgabios: /usr/share/sgabios/sgabios.bin but if your seabios is new enough (v1.11.0 and newer) then this is not needed as seabios itself is capable of serial interface. And looking at earlier e-mails in the thread you have v1.12.0-1 you you're good and don't need to add <loader/> at all. B...

...9;/> >>>>>>      </os> >>>>>> >>>>> >>>>> Try adding: >>>>> >>>>>      <loader type='rom'>/usr/share/seabios/bios.bin</loader> >> >> Darn, this should have been sgabios: /usr/share/sgabios/sgabios.bin >> but if your seabios is new enough (v1.11.0 and newer) then this is not >> needed as seabios itself is capable of serial interface. And looking at >> earlier e-mails in the thread you have v1.12.0-1 you you're good and >> don't need...

...> > > > > > > > > Try adding: > > > > > > > > > > > > > > > >      <loader type='rom'>/usr/share/seabios/bios.bin</loader> > > > > > > > > > > Darn, this should have been sgabios: /usr/share/sgabios/sgabios.bin > > > > > but if your seabios is new enough (v1.11.0 and newer) then this is not > > > > > needed as seabios itself is capable of serial interface. And looking at > > > > > earlier e-mails in the thread you have v1.12.0-1...

...t;> -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off >> printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 >> guestfs_verbose=1 TERM=xterm'\x1b[1;256r\x1b[256;256H\x1b[6n >> Google, Inc. >> Serial Graphics Adapter 06/09/13 >> SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (buildd@allspice) >> Sun Jun 9 17:23:53 UTC 2013 >> Term: 80x24 >> 4 0 >> SeaBIOS (version 1.7.3-20130708_231806-aatxe) >> Booting from ROM... >> \x1b[2J[ 0.000000] Initializing cgroup subsys cpuset >> lib...

...pend 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check > acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 > guestfs_verbose=1 TERM=xterm edd=off' > \x1b[1;256r\x1b[256;256H\x1b[6n > Google, Inc. > Serial Graphics Adapter 10/14/11 > SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@ > ca-build44.us.oracle.com) Fri Oct 14 20:04:36 UTC 2011 > Term: 80x24 > 4 0 > SeaBIOS (version seabios-0.6.1.2-28.el6) > \x1b[2J > > At this point it hangs forever. These hangs can be tricky to diagno...

...2 \ -initrd /var/tmp/.guestfs-0/initrd.2492 \ -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 TERM=xterm'\x1b[1;256r\x1b[256;256H\x1b[6n Google, Inc. Serial Graphics Adapter 06/09/13 SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (buildd@allspice) Sun Jun 9 17:23:53 UTC 2013 Term: 80x24 4 0 SeaBIOS (version 1.7.3-20130708_231806-aatxe) Booting from ROM... \x1b[2J[ 0.000000] Initializing cgroup subsys cpuset libguestfs: error: appliance closed the connection unexpectedly, s...

Maybe this should go to the qemu mail list, but I have domains configured to dump to serial. Works fine I see Grub menu/kernel messages and the like, but the "bootmenu" listing only shows up over vnc. Is there a way to have that show up over serial? I definitely can hit up the qemu mail list as well if inappropriate for here

.../16 \ -device virtio-net-pci,netdev=usernet \ -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdc selinux=0 guestfs_verbose=1 TERM=dumb' \x1b[1;256r\x1b[256;256H\x1b[6n Google, Inc. Serial Graphics Adapter 02/18/13 SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@) Mon Feb 18 08:29:02 UTC 2013 Term: 80x24 4 0 SeaBIOS (version ?-20131118_112708-) iPXE (http://ipxe.org) 00:04.0 C100 PCI2.10 PnP PMM+1F3C7C60+1F327C60 C100 Booting from ROM... Probing EDD (edd=off to disable)... ok \x1b[2J[ 0.000...

...tfs-0/initrd.2492 \ > -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off > printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 > guestfs_verbose=1 TERM=xterm'\x1b[1;256r\x1b[256;256H\x1b[6n > Google, Inc. > Serial Graphics Adapter 06/09/13 > SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (buildd@allspice) > Sun Jun 9 17:23:53 UTC 2013 > Term: 80x24 > 4 0 > SeaBIOS (version 1.7.3-20130708_231806-aatxe) > Booting from ROM... > \x1b[2J[ 0.000000] Initializing cgroup subsys cpuset > libguestfs: error: appliance cl...

...rintk.time=1 cgroup_disable=memory usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=/dev/sdb selinux=0 guestfs_verbose=1 TERM=screen' libguestfs: responding to serial console Device Status Report \x1b[1;256r\x1b[256;256H\x1b[6n Google, Inc. Serial Graphics Adapter 12/07/13 SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mjt@gandalf) Sat Dec 7 15:39:53 UTC 2013 Term: 80x24 4 0 SeaBIOS (version 1.10.2-1) On Fri, 23 Mar 2018 at 14:37 Pino Toscano <ptoscano@redhat.com> wrote: > On Friday, 23 March 2018 07:10:00 CET Tanmoy Sinha wrote: > > I am usin...

...e=ttyS0 udevtimeout=600 no_timer_check >> acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 >> guestfs_verbose=1 TERM=xterm edd=off' >> \x1b[1;256r\x1b[256;256H\x1b[6n >> Google, Inc. >> Serial Graphics Adapter 10/14/11 >> SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@ >> ca-build44.us.oracle.com) Fri Oct 14 20:04:36 UTC 2011 >> Term: 80x24 >> 4 0 >> SeaBIOS (version seabios-0.6.1.2-28.el6) >> \x1b[2J >> >> At this point it hangs forever. > >...

...ic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off > >> printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 > >> guestfs_verbose=1 TERM=xterm'\x1b[1;256r\x1b[256;256H\x1b[6n > >> Google, Inc. > >> Serial Graphics Adapter 06/09/13 > >> SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (buildd@allspice) > >> Sun Jun 9 17:23:53 UTC 2013 > >> Term: 80x24 > >> 4 0 > >> SeaBIOS (version 1.7.3-20130708_231806-aatxe) > >> Booting from ROM... > >> \x1b[2J[ 0.000000] Initializing cgr...