tag:blogger.com,1999:blog-7781458948990661258.post8006231170043493402..comments2023-10-15T06:26:47.115-04:00Comments on Linux: virtualization and tracing: Trace QEMU with LTTng UST under libvirt (OpenStack)Mohamad Gebaihttp://www.blogger.com/profile/07229397762984732401noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-7781458948990661258.post-25200679651417499632019-09-24T20:47:18.543-04:002019-09-24T20:47:18.543-04:00Panduan Cara Bet 2D Togel Klik4D Online yang terse...Panduan Cara Bet 2D <a href="http://bit.ly/2GZqjmG" rel="nofollow"><b>Togel Klik4D Online</b></a> yang tersedia di S128cash. Berhubung permainan togel adalah game legendaris di Indonesia, tahukah kamu kalau game togel sekarang bisa dimainkan secara online ? <a href="https://poker24jamonline.blogspot.com/" rel="nofollow"><b>(Baca Selengkapnya Disini...)</b></a>Video Teravelokahttps://www.blogger.com/profile/18378585528257681905noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-35675771839910363582016-10-27T20:53:01.140-04:002016-10-27T20:53:01.140-04:00What is your current state? What happens if you do...What is your current state? What happens if you do "lttng list -u" while the VM is running? You should at least make sure that the lttng-sessiond daemon is running, as such:<br /><br />$> pgrep -l lttng-sessiond<br /><br />which should return the PID of the daemon. If that's not the case, you can launch it by doing:<br /><br />$> sudo lttng-sessiond -d<br />Mohamad Gebaihttps://www.blogger.com/profile/07229397762984732401noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-69283268437628834682016-10-27T20:52:35.419-04:002016-10-27T20:52:35.419-04:00This comment has been removed by the author.Mohamad Gebaihttps://www.blogger.com/profile/07229397762984732401noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-45692137397387205712016-10-27T17:18:13.635-04:002016-10-27T17:18:13.635-04:00Still can't trace VMs launched by libvirt/virt...Still can't trace VMs launched by libvirt/virt-manager... ;-(ThiagoCMChttps://www.blogger.com/profile/02053516461985813264noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-60005186522259380102016-10-27T17:17:12.685-04:002016-10-27T17:17:12.685-04:00Mmm... Never mind... After running (Ubuntu 16.04):...Mmm... Never mind... After running (Ubuntu 16.04):<br /><br />apt install lttng-tools lttng-modules-dkms --reinstall<br /><br />It is working again, some service not enabled on boot? Maybe... let me see if I can trace vms started by libvirt...ThiagoCMChttps://www.blogger.com/profile/02053516461985813264noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-18172288840085452022016-10-27T17:12:22.932-04:002016-10-27T17:12:22.932-04:00After running:
adduser libvirt-qemu tracing
reboo...After running:<br /><br />adduser libvirt-qemu tracing<br />reboot<br /><br />And starting VMs with Libvirt, or even manually by calling qemu-system-x86_64 directly, lttng doesn't work anymore...<br /><br />I'm seeing now:<br /><br />---<br />lttng list -u<br />Error: Unable to list UST events: No session daemon is available<br />Error: Command error<br />---<br /><br />Any idea? =PThiagoCMChttps://www.blogger.com/profile/02053516461985813264noreply@blogger.comtag:blogger.com,1999:blog-7781458948990661258.post-9715857120185234702016-10-27T16:57:00.394-04:002016-10-27T16:57:00.394-04:00This comment has been removed by the author.ThiagoCMChttps://www.blogger.com/profile/02053516461985813264noreply@blogger.com