[jboss-jira] [JBoss JIRA] (WFCORE-2301) Mount point not found exception raised by createTempFileWithAttributes on overlayfs [JDK-8165852]
Brian Stansberry (JIRA)
issues at jboss.org
Sat Feb 18 11:37:00 EST 2017
[ https://issues.jboss.org/browse/WFCORE-2301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13365744#comment-13365744 ]
Brian Stansberry commented on WFCORE-2301:
------------------------------------------
Should be fixed for WF 11, at least if the Files.getFileStore issue is the only thing affected by the JDK bug. I'm leaving this unresolved for now as I may backport this to WildFly Core 2.2.1.
> Mount point not found exception raised by createTempFileWithAttributes on overlayfs [JDK-8165852]
> -------------------------------------------------------------------------------------------------
>
> Key: WFCORE-2301
> URL: https://issues.jboss.org/browse/WFCORE-2301
> Project: WildFly Core
> Issue Type: Bug
> Components: Domain Management
> Environment: WildFly via KeyCloak 2.5.1.Final
> {code:xml}
> <eap.version>7.0.0.Beta</eap.version>
> <jboss.as.version>7.2.0.Final</jboss.as.version>
> <wildfly.version>10.0.0.Final</wildfly.version>
> {code}
> on Docker with overlayfs or overlayfs2 as storage driver
> \# docker info | grep -i storage
> aufs: works (e.g., boot2docker, legacy minikube)
> overlay (e.g., CoreOS, current minikube): problem
> devicemapper (e.g., CentOS): works
> overlay2 (e.g., Docker for Mac): problem
> Reporter: Bjoern Stuetz
> Assignee: Brian Stansberry
> Fix For: 3.0.0.Beta3, 2.2.1.Final
>
>
> Mount point not found exception raised by createTempFileWithAttributes on overlayfs [JDK-8165852], i.e.,
> /opt/jboss/bin/jboss-cli.sh --file=/opt/jboss/jboss-config.cli
> inside a Docker container running on overlayfs as storage driver
> causes (full stack trace below):
> {code:java}
> java.io.IOException: Mount point not foundImage
> at sun.nio.fs.LinuxFileStore.findMountEntry(LinuxFileStore.java:91)
> {code}
> triggered by
> {code:java}
> at org.jboss.as.controller.persistence.FilePersistenceUtils.createTempFileWithAttributes(FilePersistenceUtils.java:117)
> at org.jboss.as.controller.persistence.FilePersistenceUtils.writeToTempFile(FilePersistenceUtils.java:104)
> {code}
> due to OpenJDK bug/overlayfs bug.
> We acknowledge that this is in fact an OpenJDK AND/OR overlayfs bug. However everything seems to run fine in WildFly except once the backup of the config is triggered, for example by using the cli. Hence WildFly is of limited functionality when the more and more popular overlayfs storage driver is used, and the WildFly team might be interested in providing a workaround on their side since there is no indication the OpenJDK bug will be promptly fixed. We are happy to help in any way, we are still trying to find a workaround on the Java or WildFly side; but we might need insights on why findMountEntry is invoked.
> Full Stack Trace:
> {code:java}
> java.io.IOException: Mount point not foundImage
> at sun.nio.fs.LinuxFileStore.findMountEntry(LinuxFileStore.java:91)
> at sun.nio.fs.UnixFileStore.<init>(UnixFileStore.java:65)
> at sun.nio.fs.LinuxFileStore.<init>(LinuxFileStore.java:44)
> at sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:51)
> at sun.nio.fs.LinuxFileSystemProvider.getFileStore(LinuxFileSystemProvider.java:39)
> at sun.nio.fs.UnixFileSystemProvider.getFileStore(UnixFileSystemProvider.java:368)
> at java.nio.file.Files.getFileStore(Files.java:1461)
> at org.jboss.as.controller.persistence.FilePersistenceUtils.getPosixAttributes(FilePersistenceUtils.java:129)
> at org.jboss.as.controller.persistence.FilePersistenceUtils.createTempFileWithAttributes(FilePersistenceUtils.java:117)
> at org.jboss.as.controller.persistence.FilePersistenceUtils.writeToTempFile(FilePersistenceUtils.java:104)
> at org.jboss.as.controller.persistence.ConfigurationFilePersistenceResource.doCommit(ConfigurationFilePersistenceResource.java:55)
> at org.jboss.as.controller.persistence.AbstractFilePersistenceResource.commit(AbstractFilePersistenceResource.java:58)
> at org.jboss.as.controller.ModelControllerImpl$4.commit(ModelControllerImpl.java:781)
> at org.jboss.as.controller.AbstractOperationContext.executeDoneStage(AbstractOperationContext.java:743)
> at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:680)
> at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:370)
> at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1344)
> at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:392)
> at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:204)
> at org.jboss.as.controller.ModelControllerImpl$3.execute(ModelControllerImpl.java:659)
> at org.jboss.as.controller.ModelControllerImpl$3.execute(ModelControllerImpl.java:649)
> at org.jboss.as.controller.client.helpers.DelegatingModelControllerClient.execute(DelegatingModelControllerClient.java:63)
> at org.jboss.as.cli.embedded.ThreadContextsModelControllerClient.execute(ThreadContextsModelControllerClient.java:59)
> at org.jboss.as.cli.handlers.batch.BatchRunHandler.doHandle(BatchRunHandler.java:91)
> at org.jboss.as.cli.handlers.CommandHandlerWithHelp.handle(CommandHandlerWithHelp.java:88)
> at org.jboss.as.cli.impl.CommandContextImpl.handle(CommandContextImpl.java:776)
> at org.jboss.as.cli.impl.CommandContextImpl.handleSafe(CommandContextImpl.java:799)
> at org.jboss.as.cli.impl.CliLauncher.processFile(CliLauncher.java:334)
> at org.jboss.as.cli.impl.CliLauncher.main(CliLauncher.java:262)
> at org.jboss.as.cli.CommandLineMain.main(CommandLineMain.java:45)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.jboss.modules.Module.run(Module.java:329)
> at org.jboss.modules.Main.main(Main.java:507)
> {code}
> Java Bug Overview:
> https://bugs.openjdk.java.net/browse/JDK-8165852
> http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/8u40-b25/sun/nio/fs/LinuxFileStore.java#91
> Wildfly Stack Overflow issue, not solved:
> https://stackoverflow.com/questions/41022393/mount-point-not-found
> Background Info:
> http://mail.openjdk.java.net/pipermail/nio-dev/2016-October/003915.html
> A) chroot environment [1]
> B) Docker container with overlay and overlay2 storage drivers [2]
> C) btrfs file system with an unmounted sub-volume [2]
> [1] https://bugs.openjdk.java.net/browse/JDK-8165323 - cannot get FileStore in chroot environment
> [2] https://bugs.openjdk.java.net/browse/JDK-8165852 - cannot get FileStore for a file in overlayfs in Docker
> Docker file system/storage driver:
> https://docs.docker.com/engine/userguide/storagedriver/selectadriver/)
> Yum yum-plugin-ovl, similar problem:
> https://github.com/CentOS/sig-cloud-instance-images/issues/15
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