Second reproducer for this bug (shell script attaching ceph volumes on kvm machine). Make sure to run this as 1st level guest (2nd level is slow and don't trigger the issue).
** Attachment added: "teste.sh" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1479031/+attachment/4443005/+files/teste.sh ** Attachment removed: "precise.xml" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1479031/+attachment/4443004/+files/precise.xml -- 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/1479031 Title: attached block devices not showing up Status in linux package in Ubuntu: Fix Released Status in linux source package in Precise: In Progress Bug description: I have Ubuntu Precise guests running in kvm to which I attach volumes immediately after boot. Sometimes I notice that the devices do not show up in the guest e.g. they are not visible in /proc/partitions and dmesg boot log shows no sign of then being noticed. Qemu itself shows that the devices are attached and if I do a rescan within the guest the devices appear. A reboot also cause the devices to appear. So, it feels like there is enough evidence to suggest that the devices were properly attached by qemu/seabios but they just didn't get noticed by the guest. This issue is reproducible with Precise running 3.2, 3.5 (lts-quantal) and 3.8 (lts-raring) kernels but not as of 3.11 (lts-saucy) so it would appear that something changed between 3.8 and 3.11 that resolved this issue and if we can identify it we should backport to 3.2. I am able to reproduce this issue using Openstack to spin up vms and attach volumes using the following script: http://pastebin.ubuntu.com/11954253/ I hit this issue with 1/2 instances. As a workaround one can rescan and the device shows up: echo 1 | sudo tee /sys/bus/pci/rescan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1479031/+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
