Public bug reported: I want to use ptp_kvm module for time synchronization.
reference: https://opensource.com/article/17/6/timekeeping-linux-vms tested on ubuntu kvm image: https://cloud- images.ubuntu.com/impish/20211103/impish-server-cloudimg-amd64-disk- kvm.img ``` ubuntu@test:~$ lsb_release -rd Description: Ubuntu 21.10 Release: 21.10 ubuntu@test:~$ dpkg -l linux-image-kvm Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-===============-=============-============-======================================= ii linux-image-kvm 5.13.0.1005.5 amd64 Linux kernel image for virtual systems. ubuntu@test:~$ grep -i ptp /boot/config-5.13.0-1005-kvm CONFIG_HAVE_OPTPROBES=y CONFIG_NF_CONNTRACK_PPTP=m CONFIG_NF_NAT_PPTP=m # PTP clock support # CONFIG_PTP_1588_CLOCK is not set # end of PTP clock support ``` use case 1. load ptp_kvm module 2. udev make /dev/ptp_kvm symlink to /dev/ptpX by /usr/lib/udev/rules.d/50-udev-default.rules 3. chrony use /dev/ptp_kvm for time synchronization ** Affects: linux-meta-kvm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-meta-kvm in Ubuntu. https://bugs.launchpad.net/bugs/1950878 Title: Enable ptp_kvm module for time synchronization Status in linux-meta-kvm package in Ubuntu: New Bug description: I want to use ptp_kvm module for time synchronization. reference: https://opensource.com/article/17/6/timekeeping-linux-vms tested on ubuntu kvm image: https://cloud- images.ubuntu.com/impish/20211103/impish-server-cloudimg-amd64-disk- kvm.img ``` ubuntu@test:~$ lsb_release -rd Description: Ubuntu 21.10 Release: 21.10 ubuntu@test:~$ dpkg -l linux-image-kvm Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-===============-=============-============-======================================= ii linux-image-kvm 5.13.0.1005.5 amd64 Linux kernel image for virtual systems. ubuntu@test:~$ grep -i ptp /boot/config-5.13.0-1005-kvm CONFIG_HAVE_OPTPROBES=y CONFIG_NF_CONNTRACK_PPTP=m CONFIG_NF_NAT_PPTP=m # PTP clock support # CONFIG_PTP_1588_CLOCK is not set # end of PTP clock support ``` use case 1. load ptp_kvm module 2. udev make /dev/ptp_kvm symlink to /dev/ptpX by /usr/lib/udev/rules.d/50-udev-default.rules 3. chrony use /dev/ptp_kvm for time synchronization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-kvm/+bug/1950878/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
