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Bug 1326258 - Fail to find vq for virtio-blk when boot up with 88 virtio-blk-pci data disks via PCIe-switch
Summary: Fail to find vq for virtio-blk when boot up with 88 virtio-blk-pci data disks...
Keywords:
Status: CLOSED DUPLICATE of bug 1324959
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.3
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Fam Zheng
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-04-12 09:27 UTC by jingzhao
Modified: 2016-06-27 05:16 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-06-27 05:16:18 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
The seabios log when boot up guest (64.79 KB, text/plain)
2016-04-12 09:27 UTC, jingzhao 		no flags Details
View All

Description jingzhao 2016-04-12 09:27:07 UTC 
Created attachment 1146294 [details]
The seabios log when boot up guest

Description of problem:
fail to find vq for virtio-blk when boot up with 88 virtio-blk-pci data disks via PCIe-switch, and guest didn't boot up

Version-Release number of selected component (if applicable):
kernel-3.10.0-373.el7.x86_64
qemu-img-rhev-2.5.0-4.el7.x86_64
seabios-1.9.1-2.el7.x86_64

How reproducible:
3/3

Steps to Reproduce:
1.boot guest as the following via multi-pcie.sh shell script.
sh multi-pcie.sh 88
cat multi-pcie.sh
#!/bin/sh

MACHINE=q35
SMP=4,cores=2,threads=2,sockets=1
MEM=2G
GUEST_IMG=/home/rhel.img
IMG_FORMAT=qcow2

CLI="gdb --args /usr/libexec/qemu-kvm -enable-kvm -M $MACHINE -smp $SMP -m $MEM -name vm1 -drive file=$GUEST_IMG,if=none,id=guest-img,format=$IMG_FORMAT,werror=stop,rerror=stop -device ide-hd,drive=guest-img,bus=ide.0,unit=0,id=os-disk,bootindex=0 -spice port=5931,disable-ticketing -vga qxl -monitor stdio -serial unix:/tmp/console,server,nowait -qmp tcp:0:6666,server,nowait -chardev file,path=/home/seabios.log,id=seabios -device isa-debugcon,chardev=seabios,iobase=0x402 -boot menu=on,reboot-timeout=8,strict=on"

echo before  juli
while [ ${i:=0} -lt ${1:-0} ]
do
    dstreamId=$((i))
    ustreamId=$((dstreamId/32))
    chassisId=$((dstreamId+1))
    blkDiskId=$((dstreamId))

    if [ $((dstreamId%32)) -eq 0 ]
    then
        CLI="$CLI -device ioh3420,bus=pcie.0,id=root.$ustreamId,slot=$ustreamId"
        CLI="$CLI -device x3130-upstream,bus=root.$ustreamId,id=upstream$ustreamId"
    fi

   qemu-img create -f qcow2 /home/disk/disk$blkDiskId  100M
    echo "juli$i"
    CLI="$CLI -device xio3130-downstream,bus=upstream$ustreamId,id=downstream$dstreamId,chassis=$chassisId"
    CLI="$CLI -drive file=/home/disk/disk$blkDiskId,if=none,id=disk$blkDiskId,format=qcow2 "
    CLI="$CLI -device virtio-blk-pci,scsi=off,drive=disk$blkDiskId,id=virtio-blk$blkDiskId,bus=downstream$dstreamId,disable-modern=off,disable-legacy=on"
    i=$((i+1))
done

$CLI


Actual results:
guest didn't boot up and using isa-debugcon debug, got the following messages:

All threads complete.
Found 0 lpt ports
Found 1 serial ports
AHCI controller at 1f.2, iobase fb072000, irq 10
Searching bootorder for: /pci@i0cf8/*@1f,2/drive@0/disk@0
AHCI/0: registering: "AHCI/0: QEMU HARDDISK ATA-7 Hard-Disk (20480 MiBytes)"
PS2 keyboard initialized
found virtio-blk at 3:0
pci dev 3:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3:0
found virtio-blk at 4:0
pci dev 4:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4:0
found virtio-blk at 5:0
pci dev 5:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5:0
found virtio-blk at 6:0
pci dev 6:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 6:0
found virtio-blk at 7:0
pci dev 7:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 7:0
found virtio-blk at 8:0
pci dev 8:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 8:0
found virtio-blk at 9:0
pci dev 9:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 9:0
found virtio-blk at a:0
pci dev a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk a:0
found virtio-blk at b:0
pci dev b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk b:0
found virtio-blk at c:0
pci dev c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk c:0
found virtio-blk at d:0
pci dev d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk d:0
found virtio-blk at e:0
pci dev e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk e:0
found virtio-blk at f:0
pci dev f:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk f:0
found virtio-blk at 10:0
pci dev 10:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 10:0
found virtio-blk at 11:0
pci dev 11:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 11:0
found virtio-blk at 12:0
pci dev 12:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 12:0
found virtio-blk at 13:0
pci dev 13:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 13:0
found virtio-blk at 14:0
pci dev 14:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 14:0
found virtio-blk at 15:0
pci dev 15:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 15:0
found virtio-blk at 16:0
pci dev 16:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 16:0
found virtio-blk at 17:0
pci dev 17:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 17:0
found virtio-blk at 18:0
pci dev 18:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 18:0
found virtio-blk at 19:0
pci dev 19:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 19:0
found virtio-blk at 1a:0
pci dev 1a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1a:0
found virtio-blk at 1b:0
pci dev 1b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1b:0
found virtio-blk at 1c:0
pci dev 1c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1c:0
found virtio-blk at 1d:0
pci dev 1d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1d:0
found virtio-blk at 1e:0
pci dev 1e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1e:0
found virtio-blk at 1f:0
pci dev 1f:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 1f:0
found virtio-blk at 20:0
pci dev 20:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 20:0
found virtio-blk at 21:0
pci dev 21:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 21:0
found virtio-blk at 22:0
pci dev 22:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 22:0
found virtio-blk at 25:0
pci dev 25:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 25:0
found virtio-blk at 26:0
pci dev 26:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 26:0
found virtio-blk at 27:0
pci dev 27:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 27:0
found virtio-blk at 28:0
pci dev 28:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 28:0
found virtio-blk at 29:0
pci dev 29:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 29:0
found virtio-blk at 2a:0
pci dev 2a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2a:0
found virtio-blk at 2b:0
pci dev 2b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2b:0
found virtio-blk at 2c:0
pci dev 2c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2c:0
found virtio-blk at 2d:0
pci dev 2d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2d:0
found virtio-blk at 2e:0
pci dev 2e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2e:0
found virtio-blk at 2f:0
pci dev 2f:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 2f:0
found virtio-blk at 30:0
pci dev 30:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 30:0
found virtio-blk at 31:0
pci dev 31:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 31:0
found virtio-blk at 32:0
pci dev 32:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 32:0
found virtio-blk at 33:0
pci dev 33:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 33:0
found virtio-blk at 34:0
pci dev 34:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 34:0
found virtio-blk at 35:0
pci dev 35:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 35:0
found virtio-blk at 36:0
pci dev 36:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 36:0
found virtio-blk at 37:0
pci dev 37:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 37:0
found virtio-blk at 38:0
pci dev 38:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 38:0
found virtio-blk at 39:0
pci dev 39:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 39:0
found virtio-blk at 3a:0
pci dev 3a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3a:0
found virtio-blk at 3b:0
pci dev 3b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3b:0
found virtio-blk at 3c:0
pci dev 3c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3c:0
found virtio-blk at 3d:0
pci dev 3d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3d:0
found virtio-blk at 3e:0
pci dev 3e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3e:0
found virtio-blk at 3f:0
pci dev 3f:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 3f:0
found virtio-blk at 40:0
pci dev 40:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 40:0
found virtio-blk at 41:0
pci dev 41:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 41:0
found virtio-blk at 42:0
pci dev 42:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 42:0
found virtio-blk at 43:0
pci dev 43:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 43:0
found virtio-blk at 44:0
pci dev 44:0 using modern (1.0) virtio mode
ERROR: queue already active
fail to find vq for virtio-blk 44:0
found virtio-blk at 47:0
pci dev 47:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 47:0
found virtio-blk at 48:0
pci dev 48:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 48:0
found virtio-blk at 49:0
pci dev 49:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 49:0
found virtio-blk at 4a:0
pci dev 4a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4a:0
found virtio-blk at 4b:0
pci dev 4b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4b:0
found virtio-blk at 4c:0
pci dev 4c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4c:0
found virtio-blk at 4d:0
pci dev 4d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4d:0
found virtio-blk at 4e:0
pci dev 4e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4e:0
found virtio-blk at 4f:0
pci dev 4f:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 4f:0
found virtio-blk at 50:0
pci dev 50:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 50:0
found virtio-blk at 51:0
pci dev 51:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 51:0
found virtio-blk at 52:0
pci dev 52:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 52:0
found virtio-blk at 53:0
pci dev 53:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 53:0
found virtio-blk at 54:0
pci dev 54:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 54:0
found virtio-blk at 55:0
pci dev 55:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 55:0
found virtio-blk at 56:0
pci dev 56:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 56:0
found virtio-blk at 57:0
pci dev 57:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 57:0
found virtio-blk at 58:0
pci dev 58:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 58:0
found virtio-blk at 59:0
pci dev 59:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 59:0
found virtio-blk at 5a:0
pci dev 5a:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5a:0
found virtio-blk at 5b:0
pci dev 5b:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5b:0
found virtio-blk at 5c:0
pci dev 5c:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5c:0
found virtio-blk at 5d:0
pci dev 5d:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5d:0
found virtio-blk at 5e:0
pci dev 5e:0 using modern (1.0) virtio mode
ERROR: queue size is 0
fail to find vq for virtio-blk 5e:0
All threads complete.
Scan for option roms
Running option rom at c980:0003
pmm call arg1=1
pmm call arg1=0
pmm call arg1=1
pmm call arg1=0
Searching bootorder for: /pci@i0cf8/*@2
Searching bootorder for: /rom@genroms/kvmvapic.bin

Press ESC for boot menu.


Expected results:
guest boot up and seabios didn't have error message

Additional info:
Detailed seabios log please check the attachment
Comment 2 Marcel Apfelbaum 2016-04-12 15:25:06 UTC 
I've already opened a BZ for exactly the same issue: https://bugzilla.redhat.com/show_bug.cgi?id=1324959

Please try to reproduce without Q35 or switches, just by having the same number of virtio-blk-pci devices, then I suggest to close one of the BZs.

Thank you,
Marcel
Comment 3 jingzhao 2016-04-13 01:45:50 UTC 
(In reply to Marcel Apfelbaum from comment #2)
> I've already opened a BZ for exactly the same issue:
> https://bugzilla.redhat.com/show_bug.cgi?id=1324959
> 
> Please try to reproduce without Q35 or switches, just by having the same
> number of virtio-blk-pci devices, then I suggest to close one of the BZs.
> 
> Thank you,
> Marcel

Hi Marcel
1. only hit the warning issue (WARNING - Unable to allocate resource at init_virtio_blk:104!) when boot with "sh multi-pcie.sh 14"

2.reproduce without Q35, and hit the warning issue, no fail issue. 

Following is the cli：
#!/bin/sh

MACHINE=pc
SMP=4,cores=2,threads=2,sockets=1
MEM=2G
GUEST_IMG=/home/rhel.img
IMG_FORMAT=qcow2

CLI="gdb --args /usr/libexec/qemu-kvm -enable-kvm -M $MACHINE -smp $SMP -m $MEM -name vm1 -drive file=$GUEST_IMG,if=none,id=guest-img,format=$IMG_FORMAT,werror=stop,rerror=stop -device ide-hd,drive=guest-img,bus=ide.0,unit=0,id=os-disk,bootindex=0 -spice port=5931,disable-ticketing -vga qxl -monitor stdio -serial unix:/tmp/console,server,nowait -qmp tcp:0:6666,server,nowait -chardev file,path=/home/seabios.log,id=seabios -device isa-debugcon,chardev=seabios,iobase=0x402 -boot menu=on,reboot-timeout=8,strict=on"

echo before  juli
while [ ${i:=0} -lt ${1:-0} ]
do
	dstreamId=$((i))
    blkDiskId=$((dstreamId))


    qemu-img create -f qcow2 /home/disk/disk$blkDiskId  100M
    echo "juli$i"
    CLI="$CLI -drive file=/home/disk/disk$blkDiskId,if=none,id=disk$blkDiskId,format=qcow2 "
    CLI="$CLI -device virtio-blk-pci,scsi=off,drive=disk$blkDiskId,id=virtio-blk$blkDiskId"
    i=$((i+1))
done

$CLI

And the seabios log:

Searching bootorder for: /pci@i0cf8/*@e
found virtio-blk at 0:f
WARNING - Unable to allocate resource at init_virtio_blk:104!
found virtio-blk at 0:10
WARNING - Unable to allocate resource at init_virtio_blk:104!
found virtio-blk at 0:11
WARNING - Unable to allocate resource at init_virtio_blk:104!
WARNING - Unable to allocate resource at init_atadrive:715!
Comment 4 Marcel Apfelbaum 2016-04-13 09:40:42 UTC 
(In reply to jingzhao from comment #3)
> (In reply to Marcel Apfelbaum from comment #2)
> > I've already opened a BZ for exactly the same issue:
> > https://bugzilla.redhat.com/show_bug.cgi?id=1324959
> > 
> > Please try to reproduce without Q35 or switches, just by having the same
> > number of virtio-blk-pci devices, then I suggest to close one of the BZs.
> > 
> > Thank you,
> > Marcel
> 
> Hi Marcel
> 1. only hit the warning issue (WARNING - Unable to allocate resource at
> init_virtio_blk:104!) when boot with "sh multi-pcie.sh 14"
> 
> 2.reproduce without Q35, and hit the warning issue, no fail issue.

Hi,

I understand, but did you use disable-modern=off,disable-legacy=on for Q35?
Once you use the above parameters for virtio-blk-pci, it should come to the same outcome on both machines.
Can you please try?

Thanks,
Marcel
Comment 5 jingzhao 2016-04-14 05:40:03 UTC 
(In reply to Marcel Apfelbaum from comment #4)
> (In reply to jingzhao from comment #3)
> > (In reply to Marcel Apfelbaum from comment #2)
> > > I've already opened a BZ for exactly the same issue:
> > > https://bugzilla.redhat.com/show_bug.cgi?id=1324959
> > > 
> > > Please try to reproduce without Q35 or switches, just by having the same
> > > number of virtio-blk-pci devices, then I suggest to close one of the BZs.
> > > 
> > > Thank you,
> > > Marcel
> > 
> > Hi Marcel
> > 1. only hit the warning issue (WARNING - Unable to allocate resource at
> > init_virtio_blk:104!) when boot with "sh multi-pcie.sh 14"
> > 
> > 2.reproduce without Q35, and hit the warning issue, no fail issue.
> 
> Hi,
> 
> I understand, but did you use disable-modern=off,disable-legacy=on for Q35?
---Yes, I used the above parameters for Q35
> Once you use the above parameters for virtio-blk-pci, it should come to the
> same outcome on both machines.
> Can you please try?
----Yes, the same outcome on pc and q35 once used the above parameters(disable-modern=off,disable-legacy=on for Q35 and disable-modern=on,disable-legacy=off for pc machine type)
> 
> Thanks,
> Marcel
Comment 6 Fam Zheng 2016-06-27 05:16:18 UTC 

*** This bug has been marked as a duplicate of bug 1324959 ***
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