Re: [Qemu-discuss] [Qemu-devel] Libvirt add ftrace option

Ok. so I will then shift to using system tap, Are the timestamps generated for events compatible with the ftrace timestamps? so that I can still merge the traces using TSC_OFFSET. Thanks, On Tue, Aug 16, 2016 at 8:05 PM, Daniel P. Berrange wrote: > On Tue, Aug 16, 2016 at

Re: [Qemu-discuss] qemu hangs

2016-08-16 21:21, Nerijus Baliūnas rašė: I've tried gdb without daemonize on a working PC and got the same backtrace. So it seems it is daemonize code which has a problem. Debugging the child revealed the problem: # gdb /usr/bin/qemu-system-alpha (gdb) set follow-fork-mode child (gdb) r -S

Re: [Qemu-discuss] qemu hangs

On 16 August 2016 at 18:41, Nerijus Baliūnas wrote: > 2016-08-16 20:26, Peter Maydell rašė: >>> >>> Yes, it still hangs: >>> >>> # gdb /usr/bin/qemu-system-alpha >>> (gdb) r -S -no-user-config -nodefaults -nographic -M none -qmp >>>

Re: [Qemu-discuss] qemu hangs

2016-08-16 20:26, Peter Maydell rašė: Yes, it still hangs: # gdb /usr/bin/qemu-system-alpha (gdb) r -S -no-user-config -nodefaults -nographic -M none -qmp unix:/var/lib/libvirt/qemu/capabilities.monitor.sock,server,nowait -pidfile /var/lib/libvirt/qemu/capabilities.pidfile Starting program:

[Qemu-discuss] Understanding QEMU Cache Modes and Emulated Disk Write Cache

Hello, I am running QEMU 2.5 on Ubuntu 16.04. My guests are a mixture of Linux (Ubuntu 12.04 and newer with ext4) and Windows. The guest qcow2 images are stored in a ZFS filesystem with sync=standard (on top of a mirrored vdev of SSDs) on the host Ubuntu 16.04 OS. After having read through

Re: [Qemu-discuss] qemu hangs

On 16 August 2016 at 17:50, Nerijus Baliūnas wrote: > I tried to debug with gdb: > > # gdb /usr/bin/qemu-system-alpha > Reading symbols from /usr/bin/qemu-system-alpha...Reading symbols from > /usr/lib/debug/usr/bin/qemu-system-alpha.debug...done. > done. > (gdb) r

Re: [Qemu-discuss] qemu hangs

I tried to debug with gdb: # gdb /usr/bin/qemu-system-alpha Reading symbols from /usr/bin/qemu-system-alpha...Reading symbols from /usr/lib/debug/usr/bin/qemu-system-alpha.debug...done. done. (gdb) r -S -no-user-config -nodefaults -nographic -M none -qmp

Re: [Qemu-discuss] [Qemu-devel] Libvirt add ftrace option

On Tue, Aug 16, 2016 at 07:54:50PM +0530, Gadre Nayan wrote: > Hi, > > I have setup the merging of traces from Guest QEMU and Host using the > TSC_OFFSET. So I would like to work with ftrace backend of QEMU. So > how can I add this option in libvirt tools to enable ftrace backends > with my

Re: [Qemu-discuss] passphase is not correct when cryptsetup open a luks image created by qemu-img

On Tue, Aug 16, 2016 at 05:48:37AM -0400, Han Han wrote: > Hi all, > I created a luks image via qemu-img and tried to open it via cryptsetup but > failed. > I did following steps: > # qemu-img create -f luks --object > secret,id=sec0,data=c3RhdGUxMjMK,format=base64 -o key-secret=sec0 /tmp/qemu

Re: [Qemu-discuss] Virtio interaction with the physical device

On Tue, Aug 16, 2016 at 10:08:09AM +0530, Gadre Nayan wrote: > I was trying to understand the flow of packets from the Guest OS to my > NIC card, while using the Virtio paravirtualized drivers. (Qemu is not > emulating the NIC) QEMU always emulates paravirtualized NICs to some extent. Why do you

[Qemu-discuss] passphase is not correct when cryptsetup open a luks image created by qemu-img

Hi all, I created a luks image via qemu-img and tried to open it via cryptsetup but failed. I did following steps: # qemu-img create -f luks --object secret,id=sec0,data=c3RhdGUxMjMK,format=base64 -o key-secret=sec0 /tmp/qemu 500M

[Qemu-discuss] qemu hangs

Hello, qemu 2.7.0-0.1.rc2.fc24, but the same happened with 2.6.0. I start systemctl start libvirtd, and systemctl status libvirtd shows: Active: active (running) since Pr 2016-08-15 22:41:43 EEST; 30s ago CGroup: /system.slice/libvirtd.service ├─2907 /usr/sbin/libvirtd