# [OmniOS-discuss] qemu: too many IDE bus

Nahum Shalman nshalman at omniti.com
Thu Mar 9 17:10:00 UTC 2017

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    On my SmartOS box I have a one-line script I use for verifying that my USB
    stick is still bootable after I update the platform image on it.
    It contains:

    qemu-system-x86_64 -m 4096 -smp 4 -hda /dev/dsk/c0t0d0p0 -serial stdio

    So you should be able to do that with any raw hard drive you might want to
    pass through to a virtual machine. (Though I would recommend doing it with
    the fancier "-drive" syntax and passing it through with a non-ide
    controller.)

    -Nahum

    On Wed, Mar 8, 2017 at 1:53 PM, Dirk Willems <dirk.willems at exitas.be> wrote:

    > Hello Nahum,
    >
    >
    > My apologize in the meantime I had found the solution with changing the
    > IDE with the virtio, the ide is indeed limit to 4 devices but now it's
    > running perfectly  thanks ;)
    >
    > But another question, do you have experience with adding raw devices in
    > KVM ?
    >
    >
    > Thanks in advance.
    >
    >
    > Kind Regards,
    >
    >
    > Dirk
    >
    > On 08-03-17 16:06, Nahum Shalman wrote:
    >
    > I would think that depending on how you're invoking QEMU (it looked like
    > the full qemu command line was truncated from the output you pasted) it'
    > allocating one of the 4 available IDE slots to a virtual CDROM. Depending
    > on your guest OS you could consider using a different virtual controller
    > for the virtual disks, or you might be able to tell qemu not to allocate a
    > virtual cdrom drive.
    >
    > If you want to share the full qemu command line being invoked I'm happy to
    > take a quick look at it to see if I can figure out a simple way to improve
    > it.
    >
    > (I suspect that "cd /KVM_Machines/JDN && bash -x ./JDN01_Start-VM.sh" will
    > provide the information needed)
    >
    > -Nahum
    >
    > On Fri, Mar 3, 2017 at 10:12 AM, Dirk Willems <dirk.willems at exitas.be>
    > wrote:
    >
    >> Hello,
    >>
    >> I experience some issue's with too many IDE bus on KVM ?
    >>
    >> I'm only allowed to having 3 HDD, when I add the fourth HDD I get the
    >> following error
    >>
    >> qemu: too many IDE bus
    >>
    >> root at OmniosExitas:/KVM_Machines/JDN# ./JDN01_Start-VM.sh
    >> qemu-system-x86_64: -net vnic,vlan=0,name=net0,ifname=V
    >> LJDN01,macaddr=2:8:20:2:4b:a4,: vnic dhcp disabled
    >>
    >> qemu-system-x86_64: -net vnic,vlan=1,name=net1,ifname=V
    >> SJDN01,macaddr=2:8:20:67:1:7c,: vnic dhcp disabled
    >>
    >> qemu: too many IDE bus
    >> Failed to start VM
    >> Started VM:
    >> Public: 127.0.0.1
    >> 10.100.23.86
    >> ::1/128
    >> ::/0:5903
    >>
    >>
    >> I just upgrade to
    >>
    >> root at OmniosExitas:/KVM_Machines/JDN# uname -a
    >> SunOS OmniosExitas 5.11 omnios-r151020-4151d05 i86pc i386 i86pc
    >>
    >> Any suggestions ?
    >>
    >>
    >> Thanks in advance.
    >>
    >>
    >> Kind Regards.
    >>
    >>
    >> Dirk
    >>
    >>
    >>
    >> --
    >> Dirk Willems
    >> System Engineer
    >>
    >>
    >> +32 (0)3 443 12 38 <+32%203%20443%2012%2038>
    >> Dirk.Willems at exitas.be
    >>
    >> Quality. Passion. Personality
    >>
    >> www.exitas.be | Veldkant 31 | 2550 Kontich
    >>
    >> Illumos OmniOS Installation and Configuration Implementation Specialist.
    >> Oracle Solaris 11 Installation and Configuration Certified Implementation
    >> Specialist.
    >>
    >> _______________________________________________
    >> OmniOS-discuss mailing list
    >> OmniOS-discuss at lists.omniti.com
    >> http://lists.omniti.com/mailman/listinfo/omnios-discuss
    >>
    >>
    >
    > --
    > Dirk Willems
    > System Engineer
    >
    >
    > +32 (0)3 443 12 38 <+32%203%20443%2012%2038>
    > Dirk.Willems at exitas.be
    >
    > Quality. Passion. Personality
    >
    > www.exitas.be | Veldkant 31 | 2550 Kontich
    >
    > Illumos OmniOS Installation and Configuration Implementation Specialist.
    > Oracle Solaris 11 Installation and Configuration Certified Implementation
    > Specialist.
    >
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