No space left on device error reported when running application on EAP 6

Issue

• There is a random error starting applications in EAP 6.
  We delete tmp and data directory before starting jboss instance.

  In server.log appear:

17:40:09,391 INFO  [org.jboss.as.remoting] (MSC service thread 1-3) JBAS017100: Listening on 10.10.10.10:1474
17:40:09,391 INFO  [org.jboss.as.remoting] (MSC service thread 1-8) JBAS017100: Listening on 127.0.0.1:7026
17:40:18,683 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC000001: Failed to start service jboss.deployment.unit."abc.war".STRUCTURE: org.jboss.msc.service.StartException in service jboss.deployment.unit."abc.war".STRUCTURE: JBAS018733: Failed to process phase STRUCTURE of deployment "abc.war"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:127) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_51]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_51]
        at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51]
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS018740: Failed to mount deployment content
        at org.jboss.as.server.deployment.module.DeploymentRootMountProcessor.deploy(DeploymentRootMountProcessor.java:92) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:120) [jboss-as-server-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        ... 5 more
Caused by: java.io.IOException: No space left on device
        at java.io.FileOutputStream.writeBytes(Native Method) [rt.jar:1.7.0_51]
        at java.io.FileOutputStream.write(FileOutputStream.java:345) [rt.jar:1.7.0_51]
        at org.jboss.vfs.VFSUtils.copyStream(VFSUtils.java:442)

but we don't have file system at 100% or inodes at 100%..

Do you know where is the problem??