I performed this test in EC2: - Launched an instance of latest Xenial AMI in us-west-1 (ami-2afbde4a, kernel 4.4.0-1013-aws) with 8GB root EBS volume - Created a second EBS volume, 100GB, and attached as /dev/sdf. - Ran sudo udevadm monitor --kernel --udev and resized both volumes. No udev events were registered.
I repeated the test with the test kernel in comment #1 (4.4.0-1016-aws). Upon resizing both volumes, this output was captured: KERNEL[100.355617] change /devices/vbd-768/block/xvda (block) UDEV [100.373979] change /devices/vbd-768/block/xvda (block) KERNEL[127.255821] change /devices/vbd-51792/block/xvdf (block) UDEV [127.269313] change /devices/vbd-51792/block/xvdf (block) The volume modifications were causing udev events to be emitted. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1683878 Title: blkfront: add uevent for size change Status in cloud-images: New Status in cloud-images x-series series: New Status in linux package in Ubuntu: Triaged Status in linux-aws package in Ubuntu: In Progress Status in linux source package in Xenial: New Status in linux-aws source package in Xenial: In Progress Bug description: A Xen blkfront(xen-blkfront:) patch has been submitted upstream, regarding the resizing of a blkfront device from dom0. This patch would emit a KOBJ_CHANGE uevent, to notify a guest of the change. This allows for custom udev rules, such as automatically resizing a filesystem, when an event occurs. We are requesting that this patch be cherry-picked/backported to the supported Ubuntu kernels. Reference: https://patchwork.kernel.org/patch/9676017/ Reference: https://lkml.org/lkml/2017/4/11/736 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-images/+bug/1683878/+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
