我有一台 Supermicro 服务器 SYS-1028GR-TR，双 E5-2690 v4。它有 28 个物理核心，56 个逻辑核心。我试图启动 6 个客户机，每个客户机有 8 个 vcpus。到目前为止，我只能启动 5 个客户机，第 6 个客户机根本无法启动：virsh 卡在启动时，不同会话中的另一个 virsh 显示域已启动暂停状态。无论是否使用指令设置亲和力，都会发生这种情况cpuset='X-Y'。
这是在 7.3.1611 x86_64 下发生的，软件包版本如下：
qemu-kvm-common-1.5.3-126.el7_3.6.x86_64
libvirt-daemon-kvm-2.0.0-10.el7_3.5.x86_64
qemu-kvm-1.5.3-126.el7_3.6.x86_64
以下是关于操作系统如何看待拓扑的诊断：
# virsh nodeinfo
CPU model: x86_64
CPU(s): 56
CPU frequency: 1237 MHz
CPU socket(s): 1
Core(s) per socket: 14
Thread(s) per core: 2
NUMA cell(s): 2
Memory size: 134103980 KiB
# virsh capabilities
<capabilities>
<host>
<uuid>00000000-0000-0000-0000-0cc47ab4c5d0</uuid>
<cpu>
<arch>x86_64</arch>
<model>Broadwell</model>
<vendor>Intel</vendor>
<topology sockets='1' cores='14' threads='2'/>
<feature name='vme'/>
<feature name='ds'/>
<feature name='acpi'/>
<feature name='ss'/>
<feature name='ht'/>
<feature name='tm'/>
<feature name='pbe'/>
<feature name='dtes64'/>
<feature name='monitor'/>
<feature name='ds_cpl'/>
<feature name='vmx'/>
<feature name='smx'/>
<feature name='est'/>
<feature name='tm2'/>
<feature name='xtpr'/>
<feature name='pdcm'/>
<feature name='dca'/>
<feature name='osxsave'/>
<feature name='f16c'/>
<feature name='rdrand'/>
<feature name='arat'/>
<feature name='tsc_adjust'/>
<feature name='cmt'/>
<feature name='xsaveopt'/>
<feature name='mbm_total'/>
<feature name='mbm_local'/>
<feature name='pdpe1gb'/>
<feature name='abm'/>
<feature name='invtsc'/>
<pages unit='KiB' size='4'/>
<pages unit='KiB' size='2048'/>
<pages unit='KiB' size='1048576'/>
</cpu>
<power_management>
<suspend_mem/>
<suspend_disk/>
<suspend_hybrid/>
</power_management>
<migration_features>
<live/>
<uri_transports>
<uri_transport>tcp</uri_transport>
<uri_transport>rdma</uri_transport>
</uri_transports>
</migration_features>
<topology>
<cells num='2'>
<cell id='0'>
<memory unit='KiB'>66995116</memory>
<pages unit='KiB' size='4'>16748779</pages>
<pages unit='KiB' size='2048'>0</pages>
<pages unit='KiB' size='1048576'>0</pages>
<distances>
<sibling id='0' value='10'/>
<sibling id='1' value='21'/>
</distances>
<cpus num='28'>
<cpu id='0' socket_id='0' core_id='0' siblings='0,28'/>
<cpu id='1' socket_id='0' core_id='1' siblings='1,29'/>
<cpu id='2' socket_id='0' core_id='2' siblings='2,30'/>
<cpu id='3' socket_id='0' core_id='3' siblings='3,31'/>
<cpu id='4' socket_id='0' core_id='4' siblings='4,32'/>
<cpu id='5' socket_id='0' core_id='5' siblings='5,33'/>
<cpu id='6' socket_id='0' core_id='6' siblings='6,34'/>
<cpu id='7' socket_id='0' core_id='8' siblings='7,35'/>
<cpu id='8' socket_id='0' core_id='9' siblings='8,36'/>
<cpu id='9' socket_id='0' core_id='10' siblings='9,37'/>
<cpu id='10' socket_id='0' core_id='11' siblings='10,38'/>
<cpu id='11' socket_id='0' core_id='12' siblings='11,39'/>
<cpu id='12' socket_id='0' core_id='13' siblings='12,40'/>
<cpu id='13' socket_id='0' core_id='14' siblings='13,41'/>
<cpu id='28' socket_id='0' core_id='0' siblings='0,28'/>
<cpu id='29' socket_id='0' core_id='1' siblings='1,29'/>
<cpu id='30' socket_id='0' core_id='2' siblings='2,30'/>
<cpu id='31' socket_id='0' core_id='3' siblings='3,31'/>
<cpu id='32' socket_id='0' core_id='4' siblings='4,32'/>
<cpu id='33' socket_id='0' core_id='5' siblings='5,33'/>
<cpu id='34' socket_id='0' core_id='6' siblings='6,34'/>
<cpu id='35' socket_id='0' core_id='8' siblings='7,35'/>
<cpu id='36' socket_id='0' core_id='9' siblings='8,36'/>
<cpu id='37' socket_id='0' core_id='10' siblings='9,37'/>
<cpu id='38' socket_id='0' core_id='11' siblings='10,38'/>
<cpu id='39' socket_id='0' core_id='12' siblings='11,39'/>
<cpu id='40' socket_id='0' core_id='13' siblings='12,40'/>
<cpu id='41' socket_id='0' core_id='14' siblings='13,41'/>
</cpus>
</cell>
<cell id='1'>
<memory unit='KiB'>67108864</memory>
<pages unit='KiB' size='4'>16777216</pages>
<pages unit='KiB' size='2048'>0</pages>
<pages unit='KiB' size='1048576'>0</pages>
<distances>
<sibling id='0' value='21'/>
<sibling id='1' value='10'/>
</distances>
<cpus num='28'>
<cpu id='14' socket_id='1' core_id='0' siblings='14,42'/>
<cpu id='15' socket_id='1' core_id='1' siblings='15,43'/>
<cpu id='16' socket_id='1' core_id='2' siblings='16,44'/>
<cpu id='17' socket_id='1' core_id='3' siblings='17,45'/>
<cpu id='18' socket_id='1' core_id='4' siblings='18,46'/>
<cpu id='19' socket_id='1' core_id='5' siblings='19,47'/>
<cpu id='20' socket_id='1' core_id='6' siblings='20,48'/>
<cpu id='21' socket_id='1' core_id='8' siblings='21,49'/>
<cpu id='22' socket_id='1' core_id='9' siblings='22,50'/>
<cpu id='23' socket_id='1' core_id='10' siblings='23,51'/>
<cpu id='24' socket_id='1' core_id='11' siblings='24,52'/>
<cpu id='25' socket_id='1' core_id='12' siblings='25,53'/>
<cpu id='26' socket_id='1' core_id='13' siblings='26,54'/>
<cpu id='27' socket_id='1' core_id='14' siblings='27,55'/>
<cpu id='42' socket_id='1' core_id='0' siblings='14,42'/>
<cpu id='43' socket_id='1' core_id='1' siblings='15,43'/>
<cpu id='44' socket_id='1' core_id='2' siblings='16,44'/>
<cpu id='45' socket_id='1' core_id='3' siblings='17,45'/>
<cpu id='46' socket_id='1' core_id='4' siblings='18,46'/>
<cpu id='47' socket_id='1' core_id='5' siblings='19,47'/>
<cpu id='48' socket_id='1' core_id='6' siblings='20,48'/>
<cpu id='49' socket_id='1' core_id='8' siblings='21,49'/>
<cpu id='50' socket_id='1' core_id='9' siblings='22,50'/>
<cpu id='51' socket_id='1' core_id='10' siblings='23,51'/>
<cpu id='52' socket_id='1' core_id='11' siblings='24,52'/>
<cpu id='53' socket_id='1' core_id='12' siblings='25,53'/>
<cpu id='54' socket_id='1' core_id='13' siblings='26,54'/>
<cpu id='55' socket_id='1' core_id='14' siblings='27,55'/>
</cpus>
</cell>
</cells>
</topology>
<secmodel>
<model>selinux</model>
<doi>0</doi>
<baselabel type='kvm'>system_u:system_r:svirt_t:s0</baselabel>
<baselabel type='qemu'>system_u:system_r:svirt_tcg_t:s0</baselabel>
</secmodel>
<secmodel>
<model>dac</model>
<doi>0</doi>
<baselabel type='kvm'>+107:+107</baselabel>
<baselabel type='qemu'>+107:+107</baselabel>
</secmodel>
</host>
<guest>
<os_type>hvm</os_type>
<arch name='i686'>
<wordsize>32</wordsize>
<emulator>/usr/libexec/qemu-kvm</emulator>
<machine maxCpus='240'>pc-i440fx-rhel7.0.0</machine>
<machine canonical='pc-i440fx-rhel7.0.0' maxCpus='240'>pc</machine>
<machine maxCpus='240'>rhel6.0.0</machine>
<machine maxCpus='240'>rhel6.1.0</machine>
<machine maxCpus='240'>rhel6.2.0</machine>
<machine maxCpus='240'>rhel6.3.0</machine>
<machine maxCpus='240'>rhel6.4.0</machine>
<machine maxCpus='240'>rhel6.5.0</machine>
<machine maxCpus='240'>rhel6.6.0</machine>
<domain type='qemu'/>
<domain type='kvm'>
<emulator>/usr/libexec/qemu-kvm</emulator>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<disksnapshot default='off' toggle='no'/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
<pae/>
<nonpae/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='x86_64'>
<wordsize>64</wordsize>
<emulator>/usr/libexec/qemu-kvm</emulator>
<machine maxCpus='240'>pc-i440fx-rhel7.0.0</machine>
<machine canonical='pc-i440fx-rhel7.0.0' maxCpus='240'>pc</machine>
<machine maxCpus='240'>rhel6.0.0</machine>
<machine maxCpus='240'>rhel6.1.0</machine>
<machine maxCpus='240'>rhel6.2.0</machine>
<machine maxCpus='240'>rhel6.3.0</machine>
<machine maxCpus='240'>rhel6.4.0</machine>
<machine maxCpus='240'>rhel6.5.0</machine>
<machine maxCpus='240'>rhel6.6.0</machine>
<domain type='qemu'/>
<domain type='kvm'>
<emulator>/usr/libexec/qemu-kvm</emulator>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<disksnapshot default='off' toggle='no'/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
</capabilities>