# 1
Some additional information.
I found in log the following exception:
javax.xml.transform.TransformerException: Unknown error in XPath.
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:296)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.eval(XPathImpl.java:213)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:275)
at com.sun.zfs.common.model.XMLDataModel.getAvailableDisks(XMLDataModel.java:466)
at com.sun.zfs.common.model.LockhartDataModel.getAvailableDisks(LockhartDataModel. java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:60)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createTabl eModel(AvailableDevicesTableViewHelper.java:111)
at com.sun.zfs.web.admin.zfsmodule.view.TableViewHelper.createChild(TableViewHelpe r.java:62)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createChil d(AvailableDevicesTableViewHelper.java:86)
at com.sun.zfs.web.admin.zfsmodule.wizard.common.WizardPageView.createChild(Wizard PageView.java:159)
at com.sun.zfs.web.admin.zfsmodule.wizard.appendpool.AppendPoolDevicesPageView.cre ateChild(AppendPoolDevicesPageView.java:83)
at com.iplanet.jato.view.ContainerViewBase.ensureChild(ContainerViewBase.java:187)
at com.iplanet.jato.view.ContainerViewBase.getChild(ContainerViewBase.java:541)
at com.iplanet.jato.view.ContainerViewBase.beginChildDisplay(ContainerViewBase.jav a:819)
at com.iplanet.jato.taglib.TagBase.fireBeginDisplayEvent(TagBase.java:133)
at com.sun.web.ui.taglib.common.CCTagBase.fireBeginDisplayEvent(CCTagBase.java:149 )
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:108)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_cc_action table_0(AppendPoolDevicesPageView_jsp.java:352)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_jato_page let_0(AppendPoolDevicesPageView_jsp.java:180)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspService(AppendPo olDevicesPageView_jsp.java:56)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher. java:585)
at org.apache.catalina.core.ApplicationDispatcher.access$100(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedInclude.run(Applicatio nDispatcher.java:102)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.ja va:501)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:602)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getWizardPageHTML(CCWizardTag.java:156 4)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendPageletBodyContentHTML(CCWizardT ag.java:668)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendWizardBodyHTML(CCWizardTag.java: 658)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getHTMLStringInternal(CCWizardTag.java :469)
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:114)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspx_met h_cc_wizard_0(WizardWindow_jsp.java:271)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspServi ce(WizardWindow_jsp.java:182)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:409)
at org.apache.catalina.core.ApplicationDispatcher.access$000(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedForward.run(Applicatio nDispatcher.java:86)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:304)
at com.iplanet.jato.view.ViewBeanBase.forward(ViewBeanBase.java:340)
at com.iplanet.jato.view.ViewBeanBase.forwardTo(ViewBeanBase.java:261)
at com.sun.web.ui.view.wizard.CCWizard.handleNextButtonRequest(CCWizard.java:730)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.iplanet.jato.view.command.DefaultRequestHandlingCommand.execute(DefaultRequ estHandlingCommand.java:183)
at com.iplanet.jato.view.RequestHandlingViewBase.handleRequest(RequestHandlingView Base.java:308)
at com.iplanet.jato.view.ViewBeanBase.dispatchInvocation(ViewBeanBase.java:802)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:740)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:760)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandler(ViewBeanBase.java:571)
at com.iplanet.jato.ApplicationServletBase.dispatchRequest(ApplicationServletBase. java:957)
at com.iplanet.jato.ApplicationServletBase.processRequest(ApplicationServletBase.j ava:615)
at com.iplanet.jato.ApplicationServletBase.doPost(ApplicationServletBase.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at com.sun.management.services.session.CoreSessionManagerFilter.handleRequest(Core SessionManagerFilter.java:638)
at com.sun.management.services.session.CoreSessionManagerFilter.doFilter(CoreSessi onManagerFilter.java:401)
at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:217)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:197)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextVal ve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 9)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnecti on(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:6 84)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at com.sun.org.apache.xpath.internal.axes.AxesWalker.setRoot(AxesWalker.java:218)
at com.sun.org.apache.xpath.internal.axes.WalkingIterator.setRoot(WalkingIterator. java:153)
at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(NodeSequence.java:2 12)
at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(LocPathIterator. java:211)
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:268)
... 148 more
java.lang.NullPointerException
at com.sun.org.apache.xpath.internal.axes.AxesWalker.setRoot(AxesWalker.java:218)
at com.sun.org.apache.xpath.internal.axes.WalkingIterator.setRoot(WalkingIterator. java:153)
at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(NodeSequence.java:2 12)
at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(LocPathIterator. java:211)
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:268)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.eval(XPathImpl.java:213)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:275)
at com.sun.zfs.common.model.XMLDataModel.getAvailableDisks(XMLDataModel.java:466)
at com.sun.zfs.common.model.LockhartDataModel.getAvailableDisks(LockhartDataModel. java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:60)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createTabl eModel(AvailableDevicesTableViewHelper.java:111)
at com.sun.zfs.web.admin.zfsmodule.view.TableViewHelper.createChild(TableViewHelpe r.java:62)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createChil d(AvailableDevicesTableViewHelper.java:86)
at com.sun.zfs.web.admin.zfsmodule.wizard.common.WizardPageView.createChild(Wizard PageView.java:159)
at com.sun.zfs.web.admin.zfsmodule.wizard.appendpool.AppendPoolDevicesPageView.cre ateChild(AppendPoolDevicesPageView.java:83)
at com.iplanet.jato.view.ContainerViewBase.ensureChild(ContainerViewBase.java:187)
at com.iplanet.jato.view.ContainerViewBase.getChild(ContainerViewBase.java:541)
at com.iplanet.jato.view.ContainerViewBase.beginChildDisplay(ContainerViewBase.jav a:819)
at com.iplanet.jato.taglib.TagBase.fireBeginDisplayEvent(TagBase.java:133)
at com.sun.web.ui.taglib.common.CCTagBase.fireBeginDisplayEvent(CCTagBase.java:149 )
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:108)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_cc_action table_0(AppendPoolDevicesPageView_jsp.java:352)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_jato_page let_0(AppendPoolDevicesPageView_jsp.java:180)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspService(AppendPo olDevicesPageView_jsp.java:56)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher. java:585)
at org.apache.catalina.core.ApplicationDispatcher.access$100(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedInclude.run(Applicatio nDispatcher.java:102)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.ja va:501)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:602)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getWizardPageHTML(CCWizardTag.java:156 4)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendPageletBodyContentHTML(CCWizardT ag.java:668)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendWizardBodyHTML(CCWizardTag.java: 658)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getHTMLStringInternal(CCWizardTag.java :469)
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:114)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspx_met h_cc_wizard_0(WizardWindow_jsp.java:271)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspServi ce(WizardWindow_jsp.java:182)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:409)
at org.apache.catalina.core.ApplicationDispatcher.access$000(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedForward.run(Applicatio nDispatcher.java:86)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:304)
at com.iplanet.jato.view.ViewBeanBase.forward(ViewBeanBase.java:340)
at com.iplanet.jato.view.ViewBeanBase.forwardTo(ViewBeanBase.java:261)
at com.sun.web.ui.view.wizard.CCWizard.handleNextButtonRequest(CCWizard.java:730)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.iplanet.jato.view.command.DefaultRequestHandlingCommand.execute(DefaultRequ estHandlingCommand.java:183)
at com.iplanet.jato.view.RequestHandlingViewBase.handleRequest(RequestHandlingView Base.java:308)
at com.iplanet.jato.view.ViewBeanBase.dispatchInvocation(ViewBeanBase.java:802)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:740)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:760)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandler(ViewBeanBase.java:571)
at com.iplanet.jato.ApplicationServletBase.dispatchRequest(ApplicationServletBase. java:957)
at com.iplanet.jato.ApplicationServletBase.processRequest(ApplicationServletBase.j ava:615)
at com.iplanet.jato.ApplicationServletBase.doPost(ApplicationServletBase.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at com.sun.management.services.session.CoreSessionManagerFilter.handleRequest(Core SessionManagerFilter.java:638)
at com.sun.management.services.session.CoreSessionManagerFilter.doFilter(CoreSessi onManagerFilter.java:401)
at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:217)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:197)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextVal ve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 9)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnecti on(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:6 84)
at java.lang.Thread.run(Thread.java:595)
linked to
javax.xml.xpath.XPathExpressionException
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:289)
at com.sun.zfs.common.model.XMLDataModel.getAvailableDisks(XMLDataModel.java:466)
at com.sun.zfs.common.model.LockhartDataModel.getAvailableDisks(LockhartDataModel. java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:34)
at com.sun.zfs.web.admin.zfsmodule.model.AvailableDevicesTableModel.<init>(A vailableDevicesTableModel.java:60)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createTabl eModel(AvailableDevicesTableViewHelper.java:111)
at com.sun.zfs.web.admin.zfsmodule.view.TableViewHelper.createChild(TableViewHelpe r.java:62)
at com.sun.zfs.web.admin.zfsmodule.view.AvailableDevicesTableViewHelper.createChil d(AvailableDevicesTableViewHelper.java:86)
at com.sun.zfs.web.admin.zfsmodule.wizard.common.WizardPageView.createChild(Wizard PageView.java:159)
at com.sun.zfs.web.admin.zfsmodule.wizard.appendpool.AppendPoolDevicesPageView.cre ateChild(AppendPoolDevicesPageView.java:83)
at com.iplanet.jato.view.ContainerViewBase.ensureChild(ContainerViewBase.java:187)
at com.iplanet.jato.view.ContainerViewBase.getChild(ContainerViewBase.java:541)
at com.iplanet.jato.view.ContainerViewBase.beginChildDisplay(ContainerViewBase.jav a:819)
at com.iplanet.jato.taglib.TagBase.fireBeginDisplayEvent(TagBase.java:133)
at com.sun.web.ui.taglib.common.CCTagBase.fireBeginDisplayEvent(CCTagBase.java:149 )
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:108)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_cc_action table_0(AppendPoolDevicesPageView_jsp.java:352)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspx_meth_jato_page let_0(AppendPoolDevicesPageView_jsp.java:180)
at org.apache.jsp.jsp.zfsmodule.AppendPoolDevicesPageView_jsp._jspService(AppendPo olDevicesPageView_jsp.java:56)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher. java:585)
at org.apache.catalina.core.ApplicationDispatcher.access$100(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedInclude.run(Applicatio nDispatcher.java:102)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.ja va:501)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:602)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getWizardPageHTML(CCWizardTag.java:156 4)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendPageletBodyContentHTML(CCWizardT ag.java:668)
at com.sun.web.ui.taglib.wizard.CCWizardTag.appendWizardBodyHTML(CCWizardTag.java: 658)
at com.sun.web.ui.taglib.wizard.CCWizardTag.getHTMLStringInternal(CCWizardTag.java :469)
at com.sun.web.ui.taglib.common.CCTagBase.doEndTag(CCTagBase.java:114)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspx_met h_cc_wizard_0(WizardWindow_jsp.java:271)
at org.apache.jsp.com_005fsun_005fweb_005fui.jsp.wizard.WizardWindow_jsp._jspServi ce(WizardWindow_jsp.java:182)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:696)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:409)
at org.apache.catalina.core.ApplicationDispatcher.access$000(ApplicationDispatcher .java:71)
at org.apache.catalina.core.ApplicationDispatcher$PrivilegedForward.run(Applicatio nDispatcher.java:86)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:304)
at com.iplanet.jato.view.ViewBeanBase.forward(ViewBeanBase.java:340)
at com.iplanet.jato.view.ViewBeanBase.forwardTo(ViewBeanBase.java:261)
at com.sun.web.ui.view.wizard.CCWizard.handleNextButtonRequest(CCWizard.java:730)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.iplanet.jato.view.command.DefaultRequestHandlingCommand.execute(DefaultRequ estHandlingCommand.java:183)
at com.iplanet.jato.view.RequestHandlingViewBase.handleRequest(RequestHandlingView Base.java:308)
at com.iplanet.jato.view.ViewBeanBase.dispatchInvocation(ViewBeanBase.java:802)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:740)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandlerInternal(ViewBeanBase.ja va:760)
at com.iplanet.jato.view.ViewBeanBase.invokeRequestHandler(ViewBeanBase.java:571)
at com.iplanet.jato.ApplicationServletBase.dispatchRequest(ApplicationServletBase. java:957)
at com.iplanet.jato.ApplicationServletBase.processRequest(ApplicationServletBase.j ava:615)
at com.iplanet.jato.ApplicationServletBase.doPost(ApplicationServletBase.java:473)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:245)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at com.sun.management.services.session.CoreSessionManagerFilter.handleRequest(Core SessionManagerFilter.java:638)
at com.sun.management.services.session.CoreSessionManagerFilter.doFilter(CoreSessi onManagerFilter.java:401)
at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:272)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:217)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:197)
at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterCha in.java:50)
at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.ja va:156)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:152)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextVal ve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 9)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.j ava:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnecti on(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:6 84)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.xml.transform.TransformerException: Unknown error in XPath.
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:296)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.eval(XPathImpl.java:213)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.evaluate(XPathImpl.java:275)
... 146 more
Caused by: java.lang.NullPointerException
at com.sun.org.apache.xpath.internal.axes.AxesWalker.setRoot(AxesWalker.java:218)
at com.sun.org.apache.xpath.internal.axes.WalkingIterator.setRoot(WalkingIterator. java:153)
at com.sun.org.apache.xpath.internal.axes.NodeSequence.setRoot(NodeSequence.java:2 12)
at com.sun.org.apache.xpath.internal.axes.LocPathIterator.execute(LocPathIterator. java:211)
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:268)
... 148 more