gerrit: Error in POST /accounts/self/preferences

转载：https://code.google.com/p/gerrit/issues/detail?id=3157

1. Migrated from 2.8.6.1 to 2.10
2. In UI go to settings >> preferences
3. change something and click "Save changes"

然后，页面报错，500 internal server error

后台日志error_log报错：

[-- ::,] ERROR com.google.gerrit.httpd.restapi.RestApiServlet : Error in POST /accounts/self/preferences
java.io.IOException: Keine Berechtigung
        at java.io.UnixFileSystem.createFileExclusively(Native Method)
        at java.io.File.createNewFile(File.java:)
        at java.io.File.createTempFile(File.java:)
        at org.eclipse.jgit.internal.storage.file.ObjectDirectoryInserter.newTempFile(ObjectDirectoryInserter.java:)
        at org.eclipse.jgit.internal.storage.file.ObjectDirectoryInserter.toTemp(ObjectDirectoryInserter.java:)
        at org.eclipse.jgit.internal.storage.file.ObjectDirectoryInserter.insert(ObjectDirectoryInserter.java:)
        at org.eclipse.jgit.lib.ObjectInserter.insert(ObjectInserter.java:)
        at com.google.gerrit.server.git.VersionedMetaData.saveFile(VersionedMetaData.java:)
        at com.google.gerrit.server.git.VersionedMetaData.saveUTF8(VersionedMetaData.java:)
        at com.google.gerrit.server.git.VersionedMetaData.saveConfig(VersionedMetaData.java:)
        at com.google.gerrit.server.account.VersionedAccountPreferences.onSave(VersionedAccountPreferences.java:)
        at com.google.gerrit.server.git.VersionedMetaData$.doSave(VersionedMetaData.java:)
        at com.google.gerrit.server.git.VersionedMetaData$.write(VersionedMetaData.java:)
        at com.google.gerrit.server.git.VersionedMetaData$.write(VersionedMetaData.java:)
        at com.google.gerrit.server.git.VersionedMetaData.commit(VersionedMetaData.java:)
        at com.google.gerrit.server.account.SetPreferences.apply(SetPreferences.java:)
        at com.google.gerrit.server.account.SetPreferences.apply(SetPreferences.java:)
        at com.google.gerrit.httpd.restapi.RestApiServlet.service(RestApiServlet.java:)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:)
        at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:)
        at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:)
        at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:)
        at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.gerrit.pgm.http.jetty.GetUserFilter.doFilter(GetUserFilter.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.gwtexpui.server.CacheControlFilter.doFilter(CacheControlFilter.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.gerrit.httpd.RunAsFilter.doFilter(RunAsFilter.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.gerrit.httpd.AllRequestFilter$FilterProxy$.doFilter(AllRequestFilter.java:)
        at com.google.gerrit.httpd.AllRequestFilter$FilterProxy.doFilter(AllRequestFilter.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.gerrit.httpd.RequestContextFilter.doFilter(RequestContextFilter.java:)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:)
        at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:)
        at com.google.inject.servlet.GuiceFilter$.call(GuiceFilter.java:)

根据博文的内容，出错原因主要是迁移后，git版本库存放目录下的All-Users.git目录的权限问题。

安装2.8.1时，使用的是root账户安装的；

安装2.10使用的gerrit账户安装的；

因此修改All-Users.git目录的权限，改为gerrit：gerrit，问题解决。