Bug 813713
| Summary: | Windows guest can't drive more than 21 usb-storage devices | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Qingtang Zhou <qzhou> | ||||||||||
| Component: | qemu-kvm | Assignee: | Gerd Hoffmann <kraxel> | ||||||||||
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||||||
| Severity: | medium | Docs Contact: | |||||||||||
| Priority: | unspecified | ||||||||||||
| Version: | 6.3 | CC: | acathrow, areis, bsarathy, dyasny, juzhang, michen, mkenneth, qzhang, shu, virt-maint, xwei | ||||||||||
| Target Milestone: | rc | ||||||||||||
| Target Release: | --- | ||||||||||||
| Hardware: | x86_64 | ||||||||||||
| OS: | Linux | ||||||||||||
| Whiteboard: | |||||||||||||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.306.el6 | Doc Type: | Bug Fix | ||||||||||
| Doc Text: | Story Points: | --- | |||||||||||
| Clone Of: | 812328 | Environment: | |||||||||||
| Last Closed: | 2013-02-21 07:33:57 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: | |||||||||||||
| Bug Depends On: | 812328 | ||||||||||||
| Bug Blocks: | |||||||||||||
| Attachments: |
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Created attachment 578293 [details]
output of devcon.exe
$ grep "Name: USB Mass Storage Device" dev_list|wc -l
22
$ grep "Name: QEMU QEMU HARDDISK USB Device" dev_list |wc -l
20
The usb devices need unique serial numbers. http://patchwork.ozlabs.org/patch/154012/ patches posted. Test with qemu-kvm-rhev-0.12.1.2-2.331.el6.x86_64: Attach 24 usb storage device to a win7 guest, in guest device manager, can see 24 "USB Mass Storage Device" under "Universal Serial Bus controllers", but in "Disk Management", only see 23. CMD: /usr/libexec/qemu-kvm \ -name vm1 \ -chardev socket,id=qmp_monitor_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20120417-201603-0CS2,server,nowait \ -mon chardev=qmp_monitor_id_qmpmonitor1,mode=control \ -chardev socket,id=serial_id_20120417-201603-0CS2,path=/tmp/serial-20120417-201603-0CS2,server,nowait \ -device isa-serial,chardev=serial_id_20120417-201603-0CS2 \ -device usb-ehci,id=usb1,bus=pci.0,addr=0x4 \ -device usb-ehci,id=usb2,bus=pci.0,addr=0x5 \ -device usb-ehci,id=usb3,bus=pci.0,addr=0x6 \ -device usb-ehci,id=usb4,bus=pci.0,addr=0x7 \ -drive file=nfs/win7-64-virtio.qcow2,index=0,if=none,id=drive-virtio-disk1,media=disk,cache=none,boot=on,snapshot=off,readonly=off,format=qcow2,aio=native \ -device virtio-blk-pci,bus=pci.0,addr=0x8,drive=drive-virtio-disk1,id=virtio-disk1 \ -drive file=disk1,if=none,id=usb2.0,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=1,drive=usb2.0 \ -drive file=disk2,if=none,id=usb2.1,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=2,drive=usb2.1 \ -drive file=disk3,if=none,id=usb2.2,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=3,drive=usb2.2 \ -drive file=disk4,if=none,id=usb2.3,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=4,drive=usb2.3 \ -drive file=disk5,if=none,id=usb2.4,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=5,drive=usb2.4 \ -drive file=disk6,if=none,id=usb2.5,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=6,drive=usb2.5 \ -drive file=disk7,if=none,id=usb2.6,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=1,drive=usb2.6 \ -drive file=disk8,if=none,id=usb2.7,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=2,drive=usb2.7 \ -drive file=disk9,if=none,id=usb2.8,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=3,drive=usb2.8 \ -drive file=disk10,if=none,id=usb2.9,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=4,drive=usb2.9 \ -drive file=disk11,if=none,id=usb2.10,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=5,drive=usb2.10 \ -drive file=disk12,if=none,id=usb2.11,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb2.0,port=6,drive=usb2.11 \ -drive file=disk13,if=none,id=usb2.12,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=1,drive=usb2.12 \ -drive file=disk14,if=none,id=usb2.13,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=2,drive=usb2.13 \ -drive file=disk15,if=none,id=usb2.14,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=3,drive=usb2.14 \ -drive file=disk16,if=none,id=usb2.15,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=4,drive=usb2.15 \ -drive file=disk17,if=none,id=usb2.16,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=5,drive=usb2.16 \ -drive file=disk18,if=none,id=usb2.17,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb3.0,port=6,drive=usb2.17 \ -drive file=disk19,if=none,id=usb2.18,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=1,drive=usb2.18 \ -drive file=disk20,if=none,id=usb2.19,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=2,drive=usb2.19 \ -drive file=disk21,if=none,id=usb2.20,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=3,drive=usb2.20 \ -drive file=disk22,if=none,id=usb2.21,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=4,drive=usb2.21 \ -drive file=disk23,if=none,id=usb2.22,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=5,drive=usb2.22 \ -drive file=disk24,if=none,id=usb2.23,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb4.0,port=6,drive=usb2.23 \ -m 4096 \ -smp 2,cores=1,threads=1,sockets=2 \ -rtc base=localtime,clock=host,driftfix=slew \ -M rhel6.3.0 \ -boot order=cdn,once=c,menu=off \ -enable-kvm \ -vnc :10 \ -monitor stdio Hmm. I see them all just fine. Not all of them got a driver letter though because windows ran out of them (A: + B: = reservd for floppy, C: = hard disk, D: = cdrom, E: -> Z: assigned to 22 usb drives), so they are not visible in the windows explorer. I see them in disk management though (control panel -> administrative tools -> computer management -> disk managment). Please recheck. Created attachment 653926 [details]
initial boot 23 disks
Created attachment 653927 [details]
after reboot 24 disks
OK, this bug is about windows seeing duplicate devices which is fixed, in device manager all 24 disks could be recognized, as to sometimes one disk can not be used (error: device cannot be start), open new one to track it: Bug 882050 - Attach 24 usb-storage device to windows guest, sometimes after reboot one disk can not be used with error "device cannot start" Set this bug verified. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-0527.html |
Created attachment 578289 [details] cmd line of qemu-kvm Description of problem: when assigned 24 'usb-storage' devices to a windows guest, this guest can only recognize 20 devices of them, other 2 devices has following status in "Device Manager": """ Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) """ (This status message is a bit different in Win7 guest.) I met this problem on WinXP/Win2003/Win7 guest. Tested RHEL6 guest, all usb-storage devices are found. Version-Release number of selected component (if applicable): # rpm -q kernel kernel-2.6.32-262.el6.x86_64 # rpm -qa |grep qemu qemu-kvm-tools-0.12.1.2-2.276.el6.x86_64 qemu-img-0.12.1.2-2.276.el6.x86_64 gpxe-roms-qemu-0.9.7-6.9.el6.noarch qemu-kvm-0.12.1.2-2.276.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. assign 24 usb-storages to guest. 2. Start the guest with those disks. 3. Only 20 usb-storage device can be used in windows. Actual results: Expected results: Additional info: qemu-kvm cmd line: (actual cmd line is very long, I'll send it as a attachment) # qemu ... \ -device usb-ehci,id=usb1,bus=pci.0,addr=0x4 \ -device usb-ehci,id=usb2,bus=pci.0,addr=0x5 \ -device usb-ehci,id=usb3,bus=pci.0,addr=0x6 \ -device usb-ehci,id=usb4,bus=pci.0,addr=0x7 \ -drive file='/home/autotest-devel/client/tests/kvm/stg0.qcow2',if=none,id=usb2.0,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=1,drive=usb2.0 \ -drive file='/home/autotest-devel/client/tests/kvm/stg1.qcow2',if=none,id=usb2.1,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=2,drive=usb2.1 \ -drive file='/home/autotest-devel/client/tests/kvm/stg2.qcow2',if=none,id=usb2.2,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=3,drive=usb2.2 \ -drive file='/home/autotest-devel/client/tests/kvm/stg3.qcow2',if=none,id=usb2.3,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=4,drive=usb2.3 \ -drive file='/home/autotest-devel/client/tests/kvm/stg4.qcow2',if=none,id=usb2.4,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=5,drive=usb2.4 \ -drive file='/home/autotest-devel/client/tests/kvm/stg5.qcow2',if=none,id=usb2.5,media=disk,cache=none,boot=off,snapshot=off,readonly=off,format=qcow2,aio=native \ -device usb-storage,bus=usb1.0,port=6,drive=usb2.5 \ ...