Public bug reported: Hardware Architecture: ppc64el Host OS: Ubuntu Server 16.04 LTS, Release 16.04 Guest OS: Ubuntu Server 16.04 LTS, Release 16.04
# apt-cache policy libvirt-bin libvirt-bin: Installed: 1.3.1-1ubuntu10.1 Candidate: 1.3.1-1ubuntu10.1 Version table: *** 1.3.1-1ubuntu10.1 500 500 http://us.ports.ubuntu.com/ubuntu-ports xenial-updates/main ppc64el Packages 100 /var/lib/dpkg/status 1.3.1-1ubuntu10 500 500 http://us.ports.ubuntu.com/ubuntu-ports xenial/main ppc64el Packages Issue: When attempting to hot-insert a virtual disk into a virtualized Guest that is online, the Guest OS encounters an error. On the host, the Guest has been created and started, then hot-insert a virtual disk to the Guest: # virsh attach-disk Guest1_Xenial --source /mnt/a/data_disk.qcow2 --target vda Disk attached successfully On the Guest OS, check for available disks but the newly attached disk was not found, then check /var/log/kern.log, we see this following error: Aug 4 10:39:46 105-214 kernel: [ 253.633490] RTAS: event: 1, Type: Unknown, Severity: 1 Although the newly attached virtual disk was not recognized/seen by the Guest OS right away, upon rebooting the Guest, The newly attached virtual disk will show up and become available. However, expectation was that the virtual disk will be immediately available in the Guest OS upon attaching it and without having to reboot the Guest. Experimentation has been done by slightly modifying the attach-disk command, wherein the target was changed from vda to sdc (sdc because sda & sdb have already been defined for Guest). Although the Guest no longer sees the aforementioned error in kern.log, the newly attached virtual disk still does not show up in the Guest until the Guest has been rebooted. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: libvirt-bin 1.3.1-1ubuntu10.1 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic ppc64le ApportVersion: 2.20.1-0ubuntu2.1 Architecture: ppc64el Date: Fri Aug 5 16:49:07 2016 InstallationDate: Installed on 2016-07-18 (18 days ago) InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release ppc64el (20160420.3) ProcEnviron: TERM=xterm SHELL=/bin/bash PATH=(custom, no user) LANG=en_US.UTF-8 XDG_RUNTIME_DIR=<set> ProcLoadAvg: 0.01 0.14 0.22 1/1290 5320 ProcLocks: 1: POSIX ADVISORY WRITE 3190 00:14:724 0 0 2: FLOCK ADVISORY WRITE 2275 00:17:5 0 EOF 3: FLOCK ADVISORY WRITE 2072 00:14:681 0 EOF ProcSwaps: Filename Type Size Used Priority /dev/sde3 partition 367552 0 -1 ProcVersion: Linux version 4.4.0-21-generic (buildd@bos01-ppc64el-017) (gcc version 5.3.1 20160413 (Ubuntu/IBM 5.3.1-14ubuntu2) ) #37-Ubuntu SMP Mon Apr 18 18:30:22 UTC 2016 SourcePackage: libvirt UpgradeStatus: No upgrade log present (probably fresh install) cpu_cores: Number of cores present = 20 cpu_coreson: Number of cores online = 20 cpu_smt: SMT is off modified.conffile..etc.libvirt.qemu.networks.default.xml: [modified] mtime.conffile..etc.libvirt.qemu.networks.default.xml: 2016-08-03T15:57:33.560358 ** Affects: libvirt (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug ppc64el xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1610484 Title: Virtualized guest hotplug disk fail To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1610484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs