Examples with SnapshotAndCopyCommand com.cloud.storage.command.SnapshotAndCopyCommand used on opensource projects

Example 1 with SnapshotAndCopyCommand

use of com.cloud.storage.command.SnapshotAndCopyCommand in project cosmic by MissionCriticalCloud.

the class StorageSystemSnapshotStrategy method performSnapshotAndCopyOnHostSide.

private void performSnapshotAndCopyOnHostSide(final VolumeInfo volumeInfo, final SnapshotInfo snapshotInfo) {
    Map<String, String> sourceDetails = null;
    final VolumeVO volumeVO = _volumeDao.findById(volumeInfo.getId());
    final Long vmInstanceId = volumeVO.getInstanceId();
    final VMInstanceVO vmInstanceVO = _vmInstanceDao.findById(vmInstanceId);
    Long hostId = null;
    // if the volume to snapshot is associated with a VM
    if (vmInstanceVO != null) {
        hostId = vmInstanceVO.getHostId();
        // if the VM is not associated with a host
        if (hostId == null) {
            hostId = vmInstanceVO.getLastHostId();
            if (hostId == null) {
                sourceDetails = getSourceDetails(volumeInfo);
            }
        }
    } else // volume to snapshot is not associated with a VM (could be a data disk in the detached state)
    {
        sourceDetails = getSourceDetails(volumeInfo);
    }
    final HostVO hostVO = getHost(hostId, volumeVO);
    final long storagePoolId = volumeVO.getPoolId();
    final StoragePoolVO storagePoolVO = _storagePoolDao.findById(storagePoolId);
    final DataStore dataStore = _dataStoreMgr.getDataStore(storagePoolId, DataStoreRole.Primary);
    final Map<String, String> destDetails = getDestDetails(storagePoolVO, snapshotInfo);
    final SnapshotAndCopyCommand snapshotAndCopyCommand = new SnapshotAndCopyCommand(volumeInfo.getPath(), sourceDetails, destDetails);
    SnapshotAndCopyAnswer snapshotAndCopyAnswer = null;
    try {
        // if sourceDetails != null, we need to connect the host(s) to the volume
        if (sourceDetails != null) {
            _volService.grantAccess(volumeInfo, hostVO, dataStore);
        }
        _volService.grantAccess(snapshotInfo, hostVO, dataStore);
        snapshotAndCopyAnswer = (SnapshotAndCopyAnswer) _agentMgr.send(hostVO.getId(), snapshotAndCopyCommand);
    } catch (final Exception ex) {
        throw new CloudRuntimeException(ex.getMessage());
    } finally {
        try {
            _volService.revokeAccess(snapshotInfo, hostVO, dataStore);
            // if sourceDetails != null, we need to disconnect the host(s) from the volume
            if (sourceDetails != null) {
                _volService.revokeAccess(volumeInfo, hostVO, dataStore);
            }
        } catch (final Exception ex) {
            s_logger.debug(ex.getMessage(), ex);
        }
    }
    if (snapshotAndCopyAnswer == null || !snapshotAndCopyAnswer.getResult()) {
        final String errMsg;
        if (snapshotAndCopyAnswer != null && snapshotAndCopyAnswer.getDetails() != null && !snapshotAndCopyAnswer.getDetails().isEmpty()) {
            errMsg = snapshotAndCopyAnswer.getDetails();
        } else {
            errMsg = "Unable to perform host-side operation";
        }
        throw new CloudRuntimeException(errMsg);
    }
    // for XenServer, this is the VDI's UUID
    final String path = snapshotAndCopyAnswer.getPath();
    final SnapshotDetailsVO snapshotDetail = new SnapshotDetailsVO(snapshotInfo.getId(), DiskTO.PATH, path, false);
    _snapshotDetailsDao.persist(snapshotDetail);
}