Both Focal (5.4.0-171.189) and Jammy (5.15.0-93.103) successfully verified by the test plan. root@ubuntu:~# dmesg -wT [Tue Jan 9 03:23:18 2024] pci 0000:08:00.0: [1af4:1042] type 00 class 0x010000 [Tue Jan 9 03:23:18 2024] pci 0000:08:00.0: reg 0x14: [mem 0x00000000-0x00000fff] [Tue Jan 9 03:23:18 2024] pci 0000:08:00.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [Tue Jan 9 03:23:18 2024] pci 0000:08:00.0: BAR 4: assigned [mem 0x800800000-0x800803fff 64bit pref] [Tue Jan 9 03:23:18 2024] pci 0000:08:00.0: BAR 1: assigned [mem 0xc0c00000-0xc0c00fff] [Tue Jan 9 03:23:18 2024] virtio-pci 0000:08:00.0: enabling device (0000 -> 0002) [Tue Jan 9 03:23:18 2024] virtio_blk virtio6: [vdc] 10485760 512-byte logical blocks (5.37 GB/5.00 GiB) [Tue Jan 9 03:23:22 2024] pci 0000:09:00.0: [1af4:1042] type 00 class 0x010000 [Tue Jan 9 03:23:22 2024] pci 0000:09:00.0: reg 0x14: [mem 0x00000000-0x00000fff] [Tue Jan 9 03:23:22 2024] pci 0000:09:00.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [Tue Jan 9 03:23:22 2024] pci 0000:09:00.0: BAR 4: assigned [mem 0x800a00000-0x800a03fff 64bit pref] [Tue Jan 9 03:23:22 2024] pci 0000:09:00.0: BAR 1: assigned [mem 0xc0a00000-0xc0a00fff] [Tue Jan 9 03:23:22 2024] virtio-pci 0000:09:00.0: enabling device (0000 -> 0002) [Tue Jan 9 03:23:22 2024] virtio_blk virtio7: [vdd] 10485760 512-byte logical blocks (5.37 GB/5.00 GiB)
root@ubuntu:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS loop0 7:0 0 111.9M 1 loop /snap/lxd/24322 loop1 7:1 0 63.9M 1 loop /snap/core20/2105 loop2 7:2 0 40.4M 1 loop /snap/snapd/20671 vda 252:0 0 80G 0 disk ├─vda1 252:1 0 79.9G 0 part / ├─vda14 252:14 0 4M 0 part └─vda15 252:15 0 106M 0 part /boot/efi vdb 252:16 0 366K 0 disk vdc 252:32 0 5G 0 disk vdd 252:48 0 5G 0 disk ** Tags removed: verification-needed-focal-linux verification-needed-jammy-linux ** Tags added: verification-done-focal-linux verification-done-jammy-linux -- 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/2047382 Title: Hotplugging SCSI disk in QEMU VM fails Status in linux package in Ubuntu: In Progress Status in linux source package in Focal: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Lunar: Fix Committed Status in linux source package in Mantic: Fix Committed Status in linux source package in Noble: In Progress Bug description: [Impact] Hot-plugging SCSI disks for QEMU VMs booting with UEFI and using guest kernels >= 6.5 might be broken. The inconsistency suggests a potential race condition. [Fix] Reverting the two specified commits appears to restore reliability. ========== cc22522fd55e2 PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus 40613da52b13f PCI: acpiphp: Reassign resources on bridge if necessary ========== Upstream has resolved the issue by reverting both commits through a commit placed below. ========== 5df12742b7e3a Revert "PCI: acpiphp: Reassign resources on bridge if necessary ========== [Test Plan] 1. Create a VM virt-install --name scsi_test --memory 2048 --vcpus 2 --boot uefi --disk path=/home/ubuntu/mantic-server-cloudimg-amd64.img,size=20,format=qcow2,bus=virtio -os-variant=ubuntu18.04 --graphics spice --network bridge=virbr0 2. Prepare two XMLs for adding two disk devices # cat disk_X.xml <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='XXX.img'/> <target dev='vdX' bus='virtio'/> </disk> 3. Hotplug disks and check for success virsh attach-device scsi_test disk_X.xml [Where problems could occur] The patch reverts two commits that previously addressed long-standing issues related to hotplugging devices with large BARs. While this reversion may reintroduce legacy issues, it does not introduce new problems. The associated risks are deemed low, making it worthwhile to address timing issues during the hotplugging of SCSI disks in QEMU VM. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2047382/+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
