Mount point not found - docker

Question

I am running a Java EE 7 application (with a lot of classes) on WildFly with Jackson, CDI, Swagger and Drools. I think that this error originated when I started using Drools, however I am not certain. As there is no reference to a local class, I have no idea where the error originated.
AFAIK, the application works without problems, but when I deploy the application, I get the following error:
ERROR java.io.IOException: Mount point not found
ERROR at sun.nio.fs.LinuxFileStore.findMountEntry(LinuxFileStore.java:91)
ERROR at sun.nio.fs.UnixFileStore.<init>(UnixFileStore.java:65)
ERROR at sun.nio.fs.LinuxFileStore.<init>(LinuxFileStore.java:44)
ERROR at sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:51)
ERROR at sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:39)
ERROR at sun.nio.fs.UnixFileSystemProvider.getFileStore(UnixFileSystemProvider.java:368)
ERROR at java.nio.file.Files.getFileStore(Files.java:1461)
ERROR at org.jboss.as.controller.persistence.FilePersistenceUtils.getPosixAttributes(FilePersistenceUtils.java:124)
ERROR at org.jboss.as.controller.persistence.FilePersistenceUtils.createTempFileWithAttributes(FilePersistenceUtils.java:112)
ERROR at org.jboss.as.controller.persistence.FilePersistenceUtils.writeToTempFile(FilePersistenceUtils.java:99)
ERROR at org.jboss.as.controller.persistence.ConfigurationFilePersistenceResource.doCommit(ConfigurationFilePersistenceResource.java:55)
ERROR at org.jboss.as.controller.persistence.AbstractFilePersistenceResource.commit(AbstractFilePersistenceResource.java:58)
ERROR at org.jboss.as.controller.ModelControllerImpl$4.commit(ModelControllerImpl.java:789)
ERROR at org.jboss.as.controller.AbstractOperationContext.executeDoneStage(AbstractOperationContext.java:743)
ERROR at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:680)
ERROR at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:370)
ERROR at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1329)
ERROR at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:400)
ERROR at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:222)
ERROR at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:208)
ERROR at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$300(ModelControllerClientOperationHandler.java:130)
ERROR at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:152)
ERROR at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:148)
ERROR at java.security.AccessController.doPrivileged(Native Method)
ERROR at javax.security.auth.Subject.doAs(Subject.java:422)
ERROR at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:149)
ERROR at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:148)
ERROR at org.jboss.as.protocol.mgmt.AbstractMessageHandler$ManagementRequestContextImpl$1.doExecute(AbstractMessageHandler.java:363)
ERROR at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:472)
ERROR at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
ERROR at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
ERROR at java.lang.Thread.run(Thread.java:745)
ERROR at org.jboss.threads.JBossThread.run(JBossThread.java:320)
I am using Docker Desktop for Windows. Can anyone help me out where to look for a solution, where this error is coming from?

Answer 1

I had this error in the last days using the elasticsearch docker image in Docker for Mac. I have fixed the issue change the storage driver from overlay2 to aufs (not sure yet about the real impact of this change). You can change the store driver:
Docker preferences
Daemon tab
Advanced tab
Edit the json like this:
{
"storage-driver" : "aufs"
}
I hope it helps you

Answer 2

This error is caused by the docker container you are running this application in. Look at the bug report here:
https://bugs.openjdk.java.net/browse/JDK-8165852

Answer 3

We ran into the same issue, when running a custom elasticsearch container on OS X. The container was built on docker.elastic.co/elasticsearch/elasticsearch:5.3.0. However, the container started up cleanly on a similar environment, which seemed suspicious.
The problem was finally resolved, when we noticed that docker info showed different storage drivers for us. AUFS seems to work, where as overlay2 does not. It can be changed, but you will have to refetch and rebuild your current containers.

Answer 4

I had the same error ERROR java.io.IOException: Mount point not found
and was caused by an previous deployment process error from my application.
PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."my app.war".PARSE: WFLYSRV0153: Failed to process phase PARSE of deployment "myapp.war" at...
...
Caused by: java.lang.IllegalArgumentException: WFLYEE0040: A component named 'ExampleEJB' is already defined in this module
I suppose that because of the deployment error docker fails to (execute ADD and/or CMD command) copy the application files and to add them to the filesystem of the image.
Dockerfile
ADD ./deployments /wildfly/standalone/deployments
...
CMD ["/wildfly/bin/standalone.sh", ..., "--debug"]
In my case solving the application error fixed the mount point exception.
Also I'm quite new in docker world so any suggestions are welcomed.