/*******************************************************************************
*Copyright (c) 2009 Eucalyptus Systems, Inc.
*
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* Please contact Eucalyptus Systems, Inc., 130 Castilian
* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
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* Copyright (c) 2008, Regents of the University of California
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/*
*
* Author: Sunil Soman sunils@cs.ucsb.edu
*/
package com.eucalyptus.storage;
import java.io.File;
import java.util.List;
import edu.ucsb.eucalyptus.cloud.entities.AOEMetaInfo;
import edu.ucsb.eucalyptus.cloud.entities.AOEVolumeInfo;
import edu.ucsb.eucalyptus.cloud.entities.LVMVolumeInfo;
import edu.ucsb.eucalyptus.util.StreamConsumer;
import edu.ucsb.eucalyptus.util.SystemUtil;
import org.apache.log4j.Logger;
import com.eucalyptus.entities.EntityWrapper;
import com.eucalyptus.util.EucalyptusCloudException;
import com.eucalyptus.util.ExecutionException;
import com.eucalyptus.util.StorageProperties;
public class AOEManager implements StorageExportManager {
private static Logger LOG = Logger.getLogger(AOEManager.class);
public static final int MAX_MINOR_NUMBER = 16;
public native int exportVolume(String iface, String lvName, int major, int minor);
@Override
public void checkPreconditions() throws EucalyptusCloudException, ExecutionException {
String returnValue;
returnValue = SystemUtil.run(new String[]{OverlayManager.eucaHome + StorageProperties.EUCA_ROOT_WRAPPER, "which", "vblade"});
if(returnValue.length() == 0) {
throw new EucalyptusCloudException("vblade not found: Is it installed?");
} else {
LOG.info(returnValue);
}
}
public void unexportVolume(int vbladePid) {
try
{
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(new String[]{OverlayManager.eucaHome + StorageProperties.EUCA_ROOT_WRAPPER, "kill", String.valueOf(vbladePid)});
StreamConsumer error = new StreamConsumer(proc.getErrorStream());
StreamConsumer output = new StreamConsumer(proc.getInputStream());
error.start();
output.start();
proc.waitFor();
output.join();
} catch (Throwable t) {
LOG.error(t);
}
}
public void loadModule() {
try
{
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(new String[]{OverlayManager.eucaHome + StorageProperties.EUCA_ROOT_WRAPPER, "modprobe", "aoe"});
StreamConsumer error = new StreamConsumer(proc.getErrorStream());
StreamConsumer output = new StreamConsumer(proc.getInputStream());
error.start();
output.start();
proc.waitFor();
output.join();
} catch (Throwable t) {
LOG.error(t);
}
}
public AOEManager() {
loadModule();
}
@Override
public void configure() {
EntityWrapper<AOEMetaInfo> db = StorageProperties.getEntityWrapper();
AOEMetaInfo metaInfo = new AOEMetaInfo(StorageProperties.NAME);
try {
List<AOEMetaInfo> metaInfoList = db.query(metaInfo);
if(metaInfoList.size() <= 0) {
metaInfo.setMajorNumber(0);
metaInfo.setMinorNumber(0);
db.add(metaInfo);
}
} catch(Exception e) {
db.rollback();
LOG.error(e);
}
db.commit();
}
@Override
public synchronized void allocateTarget(LVMVolumeInfo volumeInfo) {
if(volumeInfo instanceof AOEVolumeInfo) {
AOEVolumeInfo aoeVolumeInfo = (AOEVolumeInfo) volumeInfo;
int majorNumber = -1;
int minorNumber = -1;
EntityWrapper<AOEMetaInfo> db = StorageProperties.getEntityWrapper();
List<AOEMetaInfo> metaInfoList = db.query(new AOEMetaInfo(StorageProperties.NAME));
if(metaInfoList.size() > 0) {
AOEMetaInfo foundMetaInfo = metaInfoList.get(0);
majorNumber = foundMetaInfo.getMajorNumber();
minorNumber = foundMetaInfo.getMinorNumber();
do {
if(minorNumber >= MAX_MINOR_NUMBER - 1) {
++majorNumber;
}
minorNumber = (minorNumber + 1) % MAX_MINOR_NUMBER;
LOG.info("Trying e" + majorNumber + "." + minorNumber);
} while(new File(StorageProperties.ETHERD_PREFIX + majorNumber + "." + minorNumber).exists());
foundMetaInfo.setMajorNumber(majorNumber);
foundMetaInfo.setMinorNumber(minorNumber);
}
aoeVolumeInfo.setMajorNumber(majorNumber);
aoeVolumeInfo.setMinorNumber(minorNumber);
db.commit();
}
}
}