virDomainCreateXML() is returning "Could not find working O_DIRECT alignment. Try cache.direct=off". This image was working some days ago with a previous version. Did the image get corrupted or could this be related to a recent change in oVirt? --- Logs --- Thread-694::INFO::2015-04-30 03:32:49,512::vm::1765::vm.Vm::(_run) vmId=`bc99ded7-edc9-4bc5-bca5-a61a286757d2`::<?xml version="1.0" encoding="utf-8"?> <domain type="kvm"> <name>Test 31</name> <uuid>bc99ded7-edc9-4bc5-bca5-a61a286757d2</uuid> <memory>12582912</memory> <currentMemory>12582912</currentMemory> <vcpu current="4">16</vcpu> <devices> <channel type="unix"> <target name="com.redhat.rhevm.vdsm" type="virtio"/> <source mode="bind" path="/var/lib/libvirt/qemu/channels/bc99ded7-edc9-4bc5-bca5-a61a286757d2.com.redhat.rhevm.vdsm"/> </channel> <channel type="unix"> <target name="org.qemu.guest_agent.0" type="virtio"/> <source mode="bind" path="/var/lib/libvirt/qemu/channels/bc99ded7-edc9-4bc5-bca5-a61a286757d2.org.qemu.guest_agent.0"/> </channel> <input bus="ps2" type="mouse"/> <sound model="ich6"/> <memballoon model="virtio"> <address bus="0x00" domain="0x0000" function="0x0" slot="0x06" type="pci"/> </memballoon> <controller index="0" ports="16" type="virtio-serial"> <address bus="0x00" domain="0x0000" function="0x0" slot="0x04" type="pci"/> </controller> <video> <address bus="0x00" domain="0x0000" function="0x0" slot="0x02" type="pci"/> <model heads="1" type="cirrus" vram="32768"/> </video> <graphics autoport="yes" listen="0" passwd="*****" passwdValidTo="1970-01-01T00:00:01" port="-1" type="vnc"/> <interface type="bridge"> <address bus="0x00" domain="0x0000" function="0x0" slot="0x03" type="pci"/> <mac address="00:1a:4a:16:01:51"/> <model type="virtio"/> <source bridge=";vdsmdummy;"/> <filterref filter="vdsm-no-mac-spoofing"/> <link state="up"/> </interface> <disk device="cdrom" snapshot="no" type="file"> <address bus="1" controller="0" target="0" type="drive" unit="0"/> <source file="" startupPolicy="optional"/> <target bus="ide" dev="hdc"/> <readonly/> <serial/> </disk> <disk device="disk" snapshot="no" type="file"> <address bus="0x00" domain="0x0000" function="0x0" slot="0x05" type="pci"/> <source file="/rhev/data-center/00000001-0001-0001-0001-00000000007e/3233144b-7be1-445f-9ea6-6aebbacbb93f/images/5a7db80d-f037-4dcb-8059-6706a2b62b19/db63659c-c9a9-4f4f-887f-3443a008a27e"/> <target bus="virtio" dev="vda"/> <serial>5a7db80d-f037-4dcb-8059-6706a2b62b19</serial> <boot order="1"/> <driver cache="none" error_policy="stop" io="threads" name="qemu" type="raw"/> </disk> </devices> <os> <type arch="x86_64" machine="rhel6.5.0">hvm</type> <smbios mode="sysinfo"/> </os> <sysinfo type="smbios"> <system> <entry name="manufacturer">oVirt</entry> <entry name="product">oVirt Node</entry> <entry name="version">7-1.1503.el7.centos.2.8</entry> <entry name="serial">4C4C4544-0042-4B10-8058-B2C04F5A5A31</entry> <entry name="uuid">bc99ded7-edc9-4bc5-bca5-a61a286757d2</entry> </system> </sysinfo> <clock adjustment="3600" offset="variable"> <timer name="rtc" tickpolicy="catchup"/> <timer name="pit" tickpolicy="delay"/> <timer name="hpet" present="no"/> </clock> <features> <acpi/> </features> <cpu match="exact"> <model>SandyBridge</model> <topology cores="1" sockets="16" threads="1"/> </cpu> </domain> Thread-694::ERROR::2015-04-30 03:32:49,978::vm::741::vm.Vm::(_startUnderlyingVm) vmId=`bc99ded7-edc9-4bc5-bca5-a61a286757d2`::The vm start process failed Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 689, in _startUnderlyingVm self._run() File "/usr/share/vdsm/virt/vm.py", line 1800, in _run self._connection.createXML(domxml, flags), File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 126, in wrapper ret = f(*args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3427, in createXML if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) libvirtError: internal error: process exited while connecting to monitor: 2015-04-30T06:32:49.783554Z qemu-kvm: -drive file=/rhev/data-center/00000001-0001-0001-0001-00000000007e/3233144b-7be1-445f-9ea6-6aebbacbb93f/images/5a7db80d-f037-4dcb-8059-6706a2b62b19/db63659c-c9a9-4f4f-887f-3443a008a27e,if=none,id=drive-virtio-disk0,format=raw,serial=5a7db80d-f037-4dcb-8059-6706a2b62b19,cache=none,werror=stop,rerror=stop,aio=threads: could not open disk image /rhev/data-center/00000001-0001-0001-0001-00000000007e/3233144b-7be1-445f-9ea6-6aebbacbb93f/images/5a7db80d-f037-4dcb-8059-6706a2b62b19/db63659c-c9a9-4f4f-887f-3443a008a27e: Could not find working O_DIRECT alignment. Try cache.direct=off. --- Related BZ : https://bugzilla.redhat.com/show_bug.cgi?id=1184363