<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">Dear All,</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">I am actually using the following software stack:</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="" id="yui_3_16_0_1_1423823704732_5832">debian wheezy with kernel 3.2.0-4-amd64, glusterfs 3.6.2, openstack Juno, libvirt 1.2.9.</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">If I try to attach a block storage to a running vm, Openstack shows the following error: </font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">"DeviceIsBusy: The supplied device (vdc) is busy".</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">If I try to attach a block storage to a running vm, Libvirt shows the following error: </font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""> "qemuMonitorTextAddDrive:2621 : operation failed: open disk image file failed"</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="" id="yui_3_16_0_1_1423823704732_5840">Looking up for this issue on the web, I found out that Libvirt tries to open the block device by using O_DIRECT flag on; This last one is supported only by fuse for kernel >3.4.</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">Therefore, I tried to apply some options (http://www.gluster.org/documentation/use_cases/Virt-store-usecase/) to Gluster, but the problem has not been solved.</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">I also found https://github.com/avati/liboindirect but it is old and not mantained.</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">Does somebody found himself in the same situation? If yes, could you please show me how to solve it by mainteining the same version of my software stack.</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">Thanks&Regards</font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style=""><br class="" style=""></font></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><font color="#222222" face="arial, sans-serif" size="2" class="" style="">Pedro</font></div><div class="" style=""><br class="" style=""></div><div id="yui_3_16_0_1_1423823704732_5704" class="" style=""><br class="" style=""></div></div></body></html>