Exemplo n.º 1
0
    def _create(cls,
                dom,
                imgUUID,
                volUUID,
                size,
                volFormat,
                preallocate,
                volParent,
                srcImgUUID,
                srcVolUUID,
                volPath,
                initialSize=None):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """
        if initialSize:
            cls.log.error("initialSize is not supported for file-based "
                          "volumes")
            raise se.InvalidParameterException("initial size", initialSize)

        sizeBytes = size * BLOCK_SIZE
        truncSize = sizeBytes if volFormat == volume.RAW_FORMAT else 0

        try:
            oop.getProcessPool(dom.sdUUID).truncateFile(
                volPath, truncSize, mode=VOLUME_PERMISSIONS, creatExcl=True)
        except OSError as e:
            if e.errno == errno.EEXIST:
                raise se.VolumeAlreadyExists(volUUID)
            raise

        if preallocate == volume.PREALLOCATED_VOL:
            try:
                # ddWatchCopy expects size to be in bytes
                misc.ddWatchCopy("/dev/zero", volPath, vars.task.aborting,
                                 sizeBytes)
            except ActionStopped:
                raise
            except Exception:
                cls.log.error("Unexpected error", exc_info=True)
                raise se.VolumesZeroingError(volPath)

        if not volParent:
            cls.log.info(
                "Request to create %s volume %s with size = %s "
                "sectors", volume.type2name(volFormat), volPath, size)
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(volPath, sizeBytes, volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s",
                         imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        # Forcing the volume permissions in case one of the tools we use
        # (dd, qemu-img, etc.) will mistakenly change the file permissiosn.
        dom.oop.os.chmod(volPath, VOLUME_PERMISSIONS)

        return (volPath, )
Exemplo n.º 2
0
    def _interImagesCopy(self, destDom, srcSdUUID, imgUUID, chains):
        srcLeafVol = chains['srcChain'][-1]
        dstLeafVol = chains['dstChain'][-1]
        try:
            # Prepare the whole chains before the copy
            srcLeafVol.prepare(rw=False)
            dstLeafVol.prepare(rw=True, chainrw=True, setrw=True)
        except Exception:
            self.log.error("Unexpected error", exc_info=True)
            # teardown volumes
            self.__cleanupMove(srcLeafVol, dstLeafVol)
            raise

        try:
            for srcVol in chains['srcChain']:
                # Do the actual copy
                try:
                    dstVol = destDom.produceVolume(imgUUID=imgUUID,
                                                   volUUID=srcVol.volUUID)
                    srcFmt = srcVol.getFormat()
                    if srcFmt == volume.RAW_FORMAT:
                        srcFmtStr = volume.fmt2str(srcFmt)
                        dstFmtStr = volume.fmt2str(dstVol.getFormat())
                        self.log.debug("start qemu convert")
                        qemuImg.convert(srcVol.getVolumePath(),
                                        dstVol.getVolumePath(),
                                        vars.task.aborting,
                                        srcFmtStr, dstFmtStr)
                    else:
                        srcSize = srcVol.getVolumeSize(bs=1)
                        misc.ddWatchCopy(srcVol.getVolumePath(),
                                         dstVol.getVolumePath(),
                                         vars.task.aborting,
                                         size=srcSize)
                except ActionStopped:
                    raise
                except se.StorageException:
                    self.log.error("Unexpected error", exc_info=True)
                    raise
                except Exception:
                    self.log.error("Copy image error: image=%s, src domain=%s,"
                                   " dst domain=%s", imgUUID, srcSdUUID,
                                   destDom.sdUUID, exc_info=True)
                    raise se.CopyImageError()
        finally:
            # teardown volumes
            self.__cleanupMove(srcLeafVol, dstLeafVol)
Exemplo n.º 3
0
    def _create(
        cls,
        dom,
        imgUUID,
        volUUID,
        size,
        volFormat,
        preallocate,
        volParent,
        srcImgUUID,
        srcVolUUID,
        volPath,
        initialSize=None,
    ):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """
        if initialSize:
            cls.log.error("initialSize is not supported for file-based " "volumes")
            raise se.InvalidParameterException("initial size", initialSize)

        sizeBytes = size * BLOCK_SIZE
        truncSize = sizeBytes if volFormat == volume.RAW_FORMAT else 0

        try:
            oop.getProcessPool(dom.sdUUID).truncateFile(volPath, truncSize, mode=VOLUME_PERMISSIONS, creatExcl=True)
        except OSError as e:
            if e.errno == errno.EEXIST:
                raise se.VolumeAlreadyExists(volUUID)
            raise

        if preallocate == volume.PREALLOCATED_VOL:
            try:
                # ddWatchCopy expects size to be in bytes
                misc.ddWatchCopy("/dev/zero", volPath, vars.task.aborting, sizeBytes)
            except ActionStopped:
                raise
            except Exception:
                cls.log.error("Unexpected error", exc_info=True)
                raise se.VolumesZeroingError(volPath)

        if not volParent:
            cls.log.info(
                "Request to create %s volume %s with size = %s " "sectors", volume.type2name(volFormat), volPath, size
            )
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(volPath, sizeBytes, volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s", imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        # Forcing the volume permissions in case one of the tools we use
        # (dd, qemu-img, etc.) will mistakenly change the file permissiosn.
        dom.oop.os.chmod(volPath, VOLUME_PERMISSIONS)

        return (volPath,)
Exemplo n.º 4
0
    def _create(cls, dom, imgUUID, volUUID, size, volFormat, preallocate,
                volParent, srcImgUUID, srcVolUUID, volPath):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """

        if preallocate == volume.SPARSE_VOL:
            volSize = "%s" % config.get("irs", "volume_utilization_chunk_mb")
        else:
            volSize = "%s" % ((size + SECTORS_TO_MB - 1) / SECTORS_TO_MB)

        lvm.createLV(dom.sdUUID,
                     volUUID,
                     volSize,
                     activate=True,
                     initialTag=TAG_VOL_UNINIT)

        utils.rmFile(volPath)
        os.symlink(lvm.lvPath(dom.sdUUID, volUUID), volPath)

        if not volParent:
            cls.log.info(
                "Request to create %s volume %s with size = %s "
                "sectors", volume.type2name(volFormat), volPath, size)
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(volPath, size * BLOCK_SIZE,
                               volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s",
                         imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        with cls._tagCreateLock:
            mdSlot = dom.getVolumeMetadataSlot(volUUID, VOLUME_MDNUMBLKS)
            mdTags = [
                "%s%s" % (TAG_PREFIX_MD, mdSlot),
                "%s%s" % (TAG_PREFIX_PARENT, srcVolUUID),
                "%s%s" % (TAG_PREFIX_IMAGE, imgUUID)
            ]
            lvm.changeLVTags(dom.sdUUID,
                             volUUID,
                             delTags=[TAG_VOL_UNINIT],
                             addTags=mdTags)

        try:
            lvm.deactivateLVs(dom.sdUUID, volUUID)
        except se.CannotDeactivateLogicalVolume:
            cls.log.warn("Cannot deactivate new created volume %s/%s",
                         dom.sdUUID,
                         volUUID,
                         exc_info=True)

        return (dom.sdUUID, mdSlot)
Exemplo n.º 5
0
    def _create(cls, dom, imgUUID, volUUID, size, volFormat, preallocate,
                volParent, srcImgUUID, srcVolUUID, volPath):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """

        if preallocate == volume.SPARSE_VOL:
            volSize = "%s" % config.get("irs", "volume_utilization_chunk_mb")
        else:
            volSize = "%s" % ((size + SECTORS_TO_MB - 1) / SECTORS_TO_MB)

        lvm.createLV(dom.sdUUID, volUUID, volSize, activate=True,
                     initialTag=TAG_VOL_UNINIT)

        utils.rmFile(volPath)
        os.symlink(lvm.lvPath(dom.sdUUID, volUUID), volPath)

        if not volParent:
            cls.log.info("Request to create %s volume %s with size = %s "
                         "sectors", volume.type2name(volFormat), volPath,
                         size)
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(
                    volPath, size * BLOCK_SIZE, volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s",
                         imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        with cls._tagCreateLock:
            mdSlot = dom.getVolumeMetadataSlot(volUUID, VOLUME_MDNUMBLKS)
            mdTags = ["%s%s" % (TAG_PREFIX_MD, mdSlot),
                      "%s%s" % (TAG_PREFIX_PARENT, srcVolUUID),
                      "%s%s" % (TAG_PREFIX_IMAGE, imgUUID)]
            lvm.changeLVTags(dom.sdUUID, volUUID, delTags=[TAG_VOL_UNINIT],
                             addTags=mdTags)

        try:
            lvm.deactivateLVs(dom.sdUUID, volUUID)
        except se.CannotDeactivateLogicalVolume:
            cls.log.warn("Cannot deactivate new created volume %s/%s",
                         dom.sdUUID, volUUID, exc_info=True)

        return (dom.sdUUID, mdSlot)
Exemplo n.º 6
0
    def _create(cls, dom, imgUUID, volUUID, size, volFormat, preallocate,
                volParent, srcImgUUID, srcVolUUID, volPath, initialSize=None):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """

        lvSize = cls._calculate_volume_alloc_size(preallocate,
                                                  size, initialSize)

        lvm.createLV(dom.sdUUID, volUUID, "%s" % lvSize, activate=True,
                     initialTag=TAG_VOL_UNINIT)

        utils.rmFile(volPath)
        os.symlink(lvm.lvPath(dom.sdUUID, volUUID), volPath)

        if not volParent:
            cls.log.info("Request to create %s volume %s with size = %s "
                         "sectors", volume.type2name(volFormat), volPath,
                         size)
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(
                    volPath, size * BLOCK_SIZE, volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s",
                         imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        with dom.acquireVolumeMetadataSlot(volUUID, VOLUME_MDNUMBLKS) as slot:
            mdTags = ["%s%s" % (TAG_PREFIX_MD, slot),
                      "%s%s" % (TAG_PREFIX_PARENT, srcVolUUID),
                      "%s%s" % (TAG_PREFIX_IMAGE, imgUUID)]
            lvm.changeLVTags(dom.sdUUID, volUUID, delTags=[TAG_VOL_UNINIT],
                             addTags=mdTags)

        try:
            lvm.deactivateLVs(dom.sdUUID, volUUID)
        except se.CannotDeactivateLogicalVolume:
            cls.log.warn("Cannot deactivate new created volume %s/%s",
                         dom.sdUUID, volUUID, exc_info=True)

        return (dom.sdUUID, slot)
Exemplo n.º 7
0
    def _create(cls,
                dom,
                imgUUID,
                volUUID,
                size,
                volFormat,
                preallocate,
                volParent,
                srcImgUUID,
                srcVolUUID,
                volPath,
                initialSize=None):
        """
        Class specific implementation of volumeCreate. All the exceptions are
        properly handled and logged in volume.create()
        """

        lvSize = cls._calculate_volume_alloc_size(preallocate, size,
                                                  initialSize)

        lvm.createLV(dom.sdUUID,
                     volUUID,
                     "%s" % lvSize,
                     activate=True,
                     initialTag=TAG_VOL_UNINIT)

        utils.rmFile(volPath)
        os.symlink(lvm.lvPath(dom.sdUUID, volUUID), volPath)

        if not volParent:
            cls.log.info(
                "Request to create %s volume %s with size = %s "
                "sectors", volume.type2name(volFormat), volPath, size)
            if volFormat == volume.COW_FORMAT:
                qemuimg.create(volPath, size * BLOCK_SIZE,
                               volume.fmt2str(volFormat))
        else:
            # Create hardlink to template and its meta file
            cls.log.info("Request to create snapshot %s/%s of volume %s/%s",
                         imgUUID, volUUID, srcImgUUID, srcVolUUID)
            volParent.clone(volPath, volFormat)

        with dom.acquireVolumeMetadataSlot(volUUID, VOLUME_MDNUMBLKS) as slot:
            mdTags = [
                "%s%s" % (TAG_PREFIX_MD, slot),
                "%s%s" % (TAG_PREFIX_PARENT, srcVolUUID),
                "%s%s" % (TAG_PREFIX_IMAGE, imgUUID)
            ]
            lvm.changeLVTags(dom.sdUUID,
                             volUUID,
                             delTags=[TAG_VOL_UNINIT],
                             addTags=mdTags)

        try:
            lvm.deactivateLVs(dom.sdUUID, volUUID)
        except se.CannotDeactivateLogicalVolume:
            cls.log.warn("Cannot deactivate new created volume %s/%s",
                         dom.sdUUID,
                         volUUID,
                         exc_info=True)

        return (dom.sdUUID, slot)