Hello,<div>when i create a preallocation vdi,during the creating,one node left and then create error!</div><div>I do like this:(I use a server with 8disks)</div><div><div>[root@sheepdog ~]# collie node list</div><div> Idx - Host:Port Vnodes Zone</div>
<div>---------------------------------------------</div><div>* 0 - <a href="http://192.168.130.60:7000" target="_blank">192.168.130.60:7000</a> 64 1015195840</div><div> 1 - <a href="http://192.168.130.60:7001" target="_blank">192.168.130.60:7001</a> 64 1015195840</div>
<div> 2 - <a href="http://192.168.130.60:7002" target="_blank">192.168.130.60:7002</a> 64 1015195840</div><div> 3 - <a href="http://192.168.130.60:7003" target="_blank">192.168.130.60:7003</a> 64 1015195840</div>
<div> 4 - <a href="http://192.168.130.60:7004" target="_blank">192.168.130.60:7004</a> 64 1015195840</div>
<div> 5 - <a href="http://192.168.130.60:7005" target="_blank">192.168.130.60:7005</a> 64 1015195840</div><div> 6 - <a href="http://192.168.130.60:7006" target="_blank">192.168.130.60:7006</a> 64 1015195840</div>
<div> 7 - <a href="http://192.168.130.60:7007" target="_blank">192.168.130.60:7007</a> 64 1015195840</div>
</div><div>[root@sheepdog ~]# qemu-img create sheepdog:Alice -o preallocation=data 100G</div><div><div>Formatting 'sheepdog:Alice', fmt=raw size=107374182400 preallocation='data'</div><div>qemu-img: No object found</div>
<div><br></div><div>qemu-img: sheepdog:Alice: error while creating raw: Operation not permitted</div></div><div>when create error,check the node list as follows:</div><div><div>[root@sheepdog ~]# collie node list</div><div>
Idx - Host:Port Vnodes Zone</div><div>---------------------------------------------</div><div> * 1 - <a href="http://192.168.130.60:7001" target="_blank">192.168.130.60:7001</a> 64 1015195840</div>
<div> 2 - <a href="http://192.168.130.60:7002" target="_blank">192.168.130.60:7002</a> 64 1015195840</div>
<div> 3 - <a href="http://192.168.130.60:7003" target="_blank">192.168.130.60:7003</a> 64 1015195840</div><div> 4 - <a href="http://192.168.130.60:7004" target="_blank">192.168.130.60:7004</a> 64 1015195840</div>
<div> 5 - <a href="http://192.168.130.60:7005" target="_blank">192.168.130.60:7005</a> 64 1015195840</div>
<div> 6 - <a href="http://192.168.130.60:7006" target="_blank">192.168.130.60:7006</a> 64 1015195840</div><div> 7 - <a href="http://192.168.130.60:7007" target="_blank">192.168.130.60:7007</a> 64 1015195840</div>
</div><div>I have tried this several times,always the master node left.</div>
<div>and sheep.log as follows when fails:</div><div>........</div><div><div>Jan 06 02:44:31 store_queue_request(817) 3, 3, 28489a00000083 , 1</div><div>Jan 06 02:44:31 store_queue_request_local(571) 3, 28489a00000083 , 1</div>
<div>Jan 06 02:46:12 sd_confchg(1872) confchg nodeid 3282a8c0</div><div>Jan 06 02:46:12 sd_confchg(1874) 6 1 0</div><div>Jan 06 02:46:12 sd_confchg(1877) [0] node_id: 3282a8c0, pid: 3076</div><div>Jan 06 02:46:12 sd_confchg(1877) [1] node_id: 3282a8c0, pid: 3092</div>
<div>Jan 06 02:46:12 sd_confchg(1877) [2] node_id: 3282a8c0, pid: 3108</div><div>Jan 06 02:46:12 sd_confchg(1877) [3] node_id: 3282a8c0, pid: 3124</div><div>Jan 06 02:46:12 sd_confchg(1877) [4] node_id: 3282a8c0, pid: 3140</div>
<div>Jan 06 02:46:12 sd_confchg(1877) [5] node_id: 3282a8c0, pid: 3156</div><div>Jan 06 02:46:12 sd_confchg(1891) allow new confchg, 0x26e3f20</div><div>Jan 06 02:46:12 start_cpg_event_work(1716) 0 0</div></div><div>........</div>
<div>at times,I create succefully,but when I use iscsi to mount on one linux host,then use iometer to test the performance</div><div>during the test,this error occurs again,the master node left,even worse,all the other nodes left one by one.</div>
<div><br></div><div>If I create a preallocation vdi not that big(eg. 15G),i can create successfully,</div><div>but the performance i test using iometer is very slow</div><div>4k %100read 100%sequence 2.897764M/s</div>
<div>4k %100write 100%sequence 0.089305M/s</div><div>1M %100read 100%sequence 29.83363M/s</div><div>1M %100write 100%sequence 10.05084M/s</div><div>4M %100read 100%sequence 50.71799M/s</div><div>4M %100write 100%sequence 9.699951M/s</div>