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remove unused file lock codes from LibvirtStorageAdaptor.java

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(cherry picked from commit 4b8d636ce66fa8e4ed9cc56e44f4fa88e0e18cb8)
This commit is contained in:
Wei Zhou 2013-10-30 15:13:14 +01:00
parent 57036e379b
commit bad23908c2
1 changed files with 0 additions and 36 deletions
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36
plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/storage/LibvirtStorageAdaptor.java
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@ -20,13 +20,10 @@ import java.io.File;
import java.io.FileInputStream;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import java.util.Map;
import java.util.HashMap;
import org.apache.log4j.Logger;
import org.apache.commons.codec.binary.Base64;
import org.apache.cloudstack.utils.qemu.QemuImg;
@ -37,7 +34,6 @@ import org.libvirt.Connect;
import org.libvirt.LibvirtException;
import org.libvirt.Secret;
import org.libvirt.StoragePool;
import org.libvirt.StoragePoolInfo;
import org.libvirt.StorageVol;
import org.libvirt.StoragePoolInfo.StoragePoolState;
import com.ceph.rados.Rados;
@ -48,7 +44,6 @@ import com.ceph.rbd.RbdImage;
import com.ceph.rbd.RbdException;
import com.ceph.rbd.jna.RbdSnapInfo;
import com.cloud.agent.api.ManageSnapshotCommand;
import com.cloud.hypervisor.kvm.resource.LibvirtConnection;
import com.cloud.hypervisor.kvm.resource.LibvirtSecretDef;
import com.cloud.hypervisor.kvm.resource.LibvirtSecretDef.usage;
@ -63,7 +58,6 @@ import com.cloud.exception.InternalErrorException;
import com.cloud.storage.Storage.StoragePoolType;
import com.cloud.storage.StorageLayer;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.script.OutputInterpreter;
import com.cloud.utils.script.Script;
public class LibvirtStorageAdaptor implements StorageAdaptor {
@ -72,8 +66,6 @@ public class LibvirtStorageAdaptor implements StorageAdaptor {
private StorageLayer _storageLayer;
private String _mountPoint = "/mnt";
private String _manageSnapshotPath;
private String _lockfile = "KVMFILELOCK" + File.separator + ".lock";
private static final int ACQUIRE_GLOBAL_FILELOCK_TIMEOUT_FOR_KVM = 300; // 300 seconds
private String rbdTemplateSnapName = "cloudstack-base-snap";
private int rbdFeatures = (1<<0); /* Feature 1<<0 means layering in RBD format 2 */
@ -1222,10 +1214,6 @@ public class LibvirtStorageAdaptor implements StorageAdaptor {
return deleteStoragePool(pool.getUuid());
}
// refreshPool and deleteVol are used to fix CLOUDSTACK-2729/CLOUDSTACK-2780
// They are caused by a libvirt bug (https://bugzilla.redhat.com/show_bug.cgi?id=977706)
// However, we also need to fix the issues in CloudStack source code.
// A file lock is used to prevent deleting a volume from a KVM storage pool when refresh it.
private void refreshPool(StoragePool pool) throws LibvirtException {
pool.refresh(0);
return;
@ -1235,28 +1223,4 @@ public class LibvirtStorageAdaptor implements StorageAdaptor {
vol.delete(0);
}
private boolean lock(String path, int wait) {
File lockFile = new File(path);
lockFile.getParentFile().mkdir();
boolean havelock = false;
try {
while (wait > 0) {
if (lockFile.createNewFile()) {
havelock = true;
break;
}
s_logger.debug("lockFile " + _lockfile + " already exists, waiting 1000 ms");
Thread.sleep(1000);
wait--;
}
} catch (IOException e) {
} catch (InterruptedException e) {
}
return havelock;
}
private void unlock(String path) {
File lockFile = new File(path);
lockFile.delete();
}
}