> Apr 29 22:36:46 focal01 systemd-udevd[266]: memory7:
/usr/lib/udev/rules.d/40-vm-hotadd.rules:9 Failed to write
ATTR{/sys/devices/system/memory/memory7/state}, ignoring: Invalid
argumentThis isn't because the file doesn't exist, because the udev rule checks for its existence before trying to write to it. The error is because the kernel is rejecting the write to its state file for some reason. In a really quick test, it seems like this is because it's already online; the kernel default has been CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y since at least 4.15. I think the error message is harmless, since the memory is already online, but the udev rule should be fixed to check if it's offline before actually trying to online it. Can you test with the systemd from this ppa to see if the error message is gone? https://launchpad.net/~ddstreet/+archive/ubuntu/lp1876018 Also please make sure all your memory and cpus are online after booting/hotadding. Note that I might just remove this rule entirely, since it really shouldn't be needed anymore, now that the kernel default is to online hotplugged cpus/memory, but I want to verify that first. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1876018 Title: 40-vm-hotadd.rules attempts to set non-existent sysfs parameters Status in systemd package in Ubuntu: New Bug description: In focal, udev's 40-vm-hotadd.rules (from debian/extra/rules-ubuntu) tries to write to invalid (as of 5.4.0-1010-azure) sysfs nodes resulting in warnings such as: Apr 29 22:36:46 focal01 systemd-udevd[266]: memory7: /usr/lib/udev/rules.d/40-vm-hotadd.rules:9 Failed to write ATTR{/sys/devices/system/memory/memory7/state}, ignoring: Invalid argument Perhaps 40-vm-hotadd.rules needs to be updated for 5.4 semantics, removed, or something else. This behavior is present on systems upgraded from 18.04 (via d-r-u) as well as new focal systems, upon first reboot of the VM. udev: 245.4-4ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1876018/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
