Bug 1459017
| Summary: | After Hotplug virtio-serial-pci and ports during early stage booting of guest port wasn't shown in guest | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Min Deng <mdeng> |
| Component: | qemu-kvm-rhev | Assignee: | David Gibson <dgibson> |
| Status: | CLOSED DUPLICATE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.4 | CC: | knoel, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | ppc64le | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-06-07 03:23:46 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
QE also tried it on x86 platform but never reproduced the issue so marked it as ppc64le. This is a dupe of bug 1448344, only with PCI instead of a CPU device. Basically there are problems with state management of hotplug which mean that an early plugged device will mean the guest gets information duplicated between the "coldplug" and "hotplug" device discovery mechanisms, leading to this. I'm actively working on this (amongst other hotplug problems) upstream, so we'll probably have to punt this to 7.5. *** This bug has been marked as a duplicate of bug 1448344 *** |
Description of problem: After Hotplug virtio-serial-pci and ports during early stage booting of guest port wasn't shown in guest Version-Release number of selected component (if applicable): kernel-3.10.0-675.el7.ppc64le qemu-kvm-rhev-2.9.0-7.el7.ppc64le SLOF-20170303-4.git66d250e.el7.noarch How reproducible: 2/5 Steps to Reproduce: 1.prerequisite boot up a guest with a chardev eg,/usr/libexec/qemu-kvm -name avocado-vt-vm1 -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1,server,nowait -mon chardev=qmp_id_qmpmonitor1,mode=control -sandbox on -machine pseries-rhel7.4.0 -nodefaults -vga std -chardev socket,id=serial_id_serial0,path=/tmp/ttt,server,nowait -device spapr-vty,reg=0x30000000,chardev=serial_id_serial0 -device nec-usb-xhci,id=usb1,bus=pci.0,addr=0x3 -device usb-kbd,id=input0 -device usb-mouse,id=input1 -drive id=drive_image1,if=none,snapshot=off,aio=native,cache=none,format=qcow2,file=rhel74-ppc64-virtio-scsi.qcow2 -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=1,bus=pci.0,addr=0x4 -device spapr-vlan,mac=9a:93:94:95:96:97,id=idpWdRJ9,netdev=idkTBKmY -netdev tap,id=idkTBKmY,vhost=on,script=/etc/qemu-ifup,downscript=/etc/qemu-down,id=hostnet1 -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pci.0,addr=0x6 -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=4 -vnc :1 -rtc base=utc,clock=host -boot order=cdn,once=d,menu=off,strict=off -enable-kvm -monitor stdio -monitor unix:/tmp/monitor3,server,nowait -qmp tcp:0:4444,server,nowait -m 8G,slots=32,maxmem=80G -numa node -chardev socket,id=channel1,path=/tmp/helloworld,server,nowait 2.During the early stage of booting (qemu) device_add virtio-serial-pci,id=virtio-serial0,max_ports=16 (qemu) device_add virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm,bus=virtio-serial0.0,id=port0 Actual results: After login guest ls /dev/vp* to check the port,but it didn't exist. Expected results: The port was there Additional info: Info qtree log after hotplug virtio-serail-pci and port (qemu) info qtree bus: main-system-bus type System dev: spapr-pci-host-bridge, id "" index = 0 (0x0) buid = 576460752840294400 (0x800000020000000) liobn = 2147483648 (0x80000000) liobn64 = 2147483649 (0x80000001) mem_win_addr = 35186519572480 (0x200080000000) mem_win_size = 2147483648 (0x80000000) mem64_win_addr = 36283883716608 (0x210000000000) mem64_win_size = 1099511627776 (0x10000000000) mem64_win_pciaddr = 36283883716608 (0x210000000000) io_win_addr = 35184372088832 (0x200000000000) io_win_size = 65536 (0x10000) dynamic-reconfiguration = true dma_win_addr = 0 (0x0) dma_win_size = 1073741824 (0x40000000) dma64_win_addr = 576460752303423488 (0x800000000000000) ddw = true pgsz = 69632 (0x11000) numa_node = 4294967295 (0xffffffff) pre-2.8-migration = false pcie-extended-configuration-space = true bus: pci.0 type PCI dev: virtio-serial-pci, id "virtio-serial0" ioeventfd = true vectors = 2 (0x2) class = 1920 (0x780) virtio-pci-bus-master-bug-migration = false disable-legacy = "off" disable-modern = false migrate-extra = true modern-pio-notify = false x-disable-pcie = false page-per-vq = false x-ignore-backend-features = false ats = false x-pcie-deverr-init = true x-pcie-lnkctl-init = true x-pcie-pm-init = true addr = 01.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true x-pcie-extcap-init = true class Class 0780, addr 00:01.0, pci id 1af4:1003 (sub 1af4:0003) bar 0: i/o at 0xffffffffffffffff [0x3e] bar 1: mem at 0xffffffffffffffff [0xffe] bar 4: mem at 0xffffffffffffffff [0x3ffe] bus: virtio-bus type virtio-pci-bus dev: virtio-serial-device, id "" max_ports = 16 (0x10) emergency-write = true indirect_desc = true event_idx = true notify_on_empty = true any_layout = true iommu_platform = false __com.redhat_rhel6_ctrl_guest_workaround = false bus: virtio-serial0.0 type virtio-serial-bus dev: virtserialport, id "port0" chardev = "channel1" nr = 1 (0x1) name = "com.redhat.rhevm.vdsm" port 1, guest off, host off, throttle off dev: virtio-scsi-pci, id "virtio_scsi_pci0" ioeventfd = true vectors = 4 (0x4) virtio-pci-bus-master-bug-migration = false disable-legacy = "off" disable-modern = false migrate-extra = true modern-pio-notify = false x-disable-pcie = false page-per-vq = false x-ignore-backend-features = false ats = false x-pcie-deverr-init = true x-pcie-lnkctl-init = true x-pcie-pm-init = true addr = 06.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true x-pcie-extcap-init = true class SCSI controller, addr 00:06.0, pci id 1af4:1004 (sub 1af4:0008) bar 0: i/o at 0x80 [0xbf] bar 1: mem at 0xc0025000 [0xc0025fff] bar 4: mem at 0x210000004000 [0x210000007fff] bus: virtio-bus type virtio-pci-bus dev: virtio-scsi-device, id "" num_queues = 1 (0x1) max_sectors = 65535 (0xffff) cmd_per_lun = 128 (0x80) hotplug = true param_change = true indirect_desc = true event_idx = true notify_on_empty = true any_layout = true iommu_platform = false __com.redhat_rhel6_ctrl_guest_workaround = false bus: virtio_scsi_pci0.0 type SCSI dev: virtio-blk-pci, id "image1" class = 0 (0x0) ioeventfd = true vectors = 2 (0x2) virtio-pci-bus-master-bug-migration = false disable-legacy = "off" disable-modern = false migrate-extra = true modern-pio-notify = false x-disable-pcie = false page-per-vq = false x-ignore-backend-features = false ats = false x-pcie-deverr-init = true x-pcie-lnkctl-init = true x-pcie-pm-init = true addr = 04.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true x-pcie-extcap-init = true class SCSI controller, addr 00:04.0, pci id 1af4:1001 (sub 1af4:0002) bar 0: i/o at 0x40 [0x7f] bar 1: mem at 0xc0024000 [0xc0024fff] bar 4: mem at 0x210000000000 [0x210000003fff] bus: virtio-bus type virtio-pci-bus dev: virtio-blk-device, id "" drive = "drive_image1" logical_block_size = 512 (0x200) physical_block_size = 512 (0x200) min_io_size = 0 (0x0) opt_io_size = 0 (0x0) discard_granularity = 4294967295 (0xffffffff) write-cache = "auto" share-rw = false rerror = "auto" werror = "auto" cyls = 16383 (0x3fff) heads = 16 (0x10) secs = 63 (0x3f) serial = "" config-wce = true scsi = false request-merging = true num-queues = 1 (0x1) indirect_desc = true event_idx = true notify_on_empty = true any_layout = true iommu_platform = false __com.redhat_rhel6_ctrl_guest_workaround = false dev: nec-usb-xhci, id "usb1" msi = "auto" msix = "auto" superspeed-ports-first = true force-pcie-endcap = false intrs = 16 (0x10) slots = 64 (0x40) streams = true p2 = 4 (0x4) p3 = 4 (0x4) addr = 03.0 romfile = "" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true x-pcie-extcap-init = true class USB controller, addr 00:03.0, pci id 1033:0194 (sub 1af4:1100) bar 0: mem at 0xc0020000 [0xc0023fff] bus: usb1.0 type usb-bus dev: usb-tablet, id "usb-tablet1" usb_version = 2 (0x2) display = "" head = 0 (0x0) port = "4" serial = "" full-path = true msos-desc = true addr 0.3, port 4, speed 480, name QEMU USB Tablet, attached dev: usb-mouse, id "input1" usb_version = 2 (0x2) port = "" serial = "" full-path = true msos-desc = true addr 0.2, port 2, speed 480, name QEMU USB Mouse, attached dev: usb-kbd, id "input0" usb_version = 2 (0x2) display = "" port = "" serial = "" full-path = true msos-desc = true addr 0.1, port 1, speed 480, name QEMU USB Keyboard, attached dev: VGA, id "" vgamem_mb = 16 (0x10) mmio = true qemu-extended-regs = true addr = 00.0 romfile = "vgabios-stdvga.bin" rombar = 1 (0x1) multifunction = false command_serr_enable = true x-pcie-lnksta-dllla = true x-pcie-extcap-init = true class VGA controller, addr 00:00.0, pci id 1234:1111 (sub 1af4:1100) bar 0: mem at 0x80000000 [0x80ffffff] bar 2: mem at 0xc0000000 [0xc0000fff] bar 6: mem at 0xffffffffffffffff [0xfffe] dev: spapr-vio-bridge, id "" bus: spapr-vio type spapr-vio-bus dev: spapr-vlan, id "idpWdRJ9" reg = 1895825409 (0x71000001) mac = "9a:93:94:95:96:97" vlan = <null> netdev = "idkTBKmY" use-rx-buffer-pools = true irq = 4104 (0x1008) dev: spapr-vty, id "vty@30000000" reg = 805306368 (0x30000000) chardev = "serial_id_serial0" irq = 4103 (0x1007) dev: spapr-nvram, id "nvram@71000000" reg = 1895825408 (0x71000000) drive = "" irq = 4098 (0x1002) dev: spapr-rtc, id ""