Method to address misaligned holes and writes to end of files while performing quick reconcile operation during synchronous filesystem replication
Granted: September 1, 2020
Patent Number:
10761768
Techniques are provided for handling misaligned holes and writes beyond end of files during a quick reconciliation process. During quick reconciliation, a read operation is performed to read data from a first storage object and is replicated to a second storage object. If the data read from the first storage object comprises misaligned holes, then a different range of data is read from the first storage object so that aligned holes are read and replicated to the second storage object. If…
Transitioning volumes between storage virtual machines
Granted: July 28, 2020
Patent Number:
10725806
A volume rehost tool migrates a storage volume from a source virtual server within a distributed storage system to a destination storage server within the distributed storage system. The volume rehost tool can prevent client access to data on the volume through the source virtual server until the volume has been migrated to the destination virtual server. The tool identifies a set of storage objects associated with the volume, removes configuration information for the set of storage…
Dynamic recycling algorithm to handle overlapping writes during synchronous replication of application workloads with large number of files
Granted: July 28, 2020
Patent Number:
10725691
Techniques are provided for overlapping write handling. Overlapping write managers are used to maintain the order that write operations are executed at a first computing environment and replicated to a second computing environment. Overlapping write managers are pre-allocated as available for managing overlapping write operations. A mapping is used to track what overlapping write managers are currently allocated for particular file handles of files. Thus, if an incoming write operation…
Service processor traps for communicating storage controller failure
Granted: July 21, 2020
Patent Number:
10719419
One or more techniques and/or computing devices are provided for communicating storage controller failures utilizing service processor traps. A first storage controller, of a first storage cluster, has a disaster recovery relationship with a second storage controller of a second storage cluster. The first storage controller comprise a first service processor configured to monitor health of the first storage controller. Responsive to identifying a failure of the first storage controller,…
Recovery support techniques for storage virtualization environments
Granted: July 21, 2020
Patent Number:
10719403
Recovery support techniques for storage virtualization environments are described. In one embodiment, for example, a method may be performed that comprises defining, by processing circuitry, a storage container comprising one or more logical storage volumes of a logical storage array of a storage system, associating the storage container with a virtual volume (vvol) datastore, identifying metadata for a vvol of the vvol datastore, and writing the metadata for the vvol to the storage…
Cluster configuration information replication
Granted: July 14, 2020
Patent Number:
10712975
One or more techniques and/or systems are provided for cluster configuration information replication, managing cluster-wide service agents, and/or for cluster-wide outage detection. In an example of cluster configuration information replication, a replication workflow corresponding to a storage operation implemented for a storage object (e.g., renaming of a volume) of a first cluster may be transferred to a second storage cluster for selectively implementation. In an example of managing…
Configuration update management
Granted: June 30, 2020
Patent Number:
10698607
One or more techniques and/or systems are provided for managing configuration updates used to replicate configuration of a primary storage virtual machine to a partner storage virtual machine. For example, the partner storage virtual machine may be configured to provide failover operation in place of the primary storage virtual machine in the event the primary storage virtual machine fails. Configuration updates are queued and replayed on the partner storage virtual machine to replicate…
Servicing of storage device software components of nodes of a cluster storage system
Granted: June 23, 2020
Patent Number:
10693970
Described herein are method and apparatus for servicing software components of nodes of a cluster storage system. During data-access sessions with clients, client IDs and file handles for accessing files are produced and stored to clients and stored (as session data) to each node. A serviced node is taken offline, whereby network connections to clients are disconnected. Each disconnected client is configured to retain its client ID and file handles and attempt reconnections. Session data…
Data synchronization
Granted: June 16, 2020
Patent Number:
10684994
One or more techniques and/or computing devices are provided for data synchronization. For example, an in-flight log may be maintained to track storage operations that are received by a first storage node, but have not been committed to both first storage of the first storage node and second storage of a second storage node that has a replication relationship, such as a disaster recovery relationship, with the first storage node. A dirty region log may be maintained to track regions…
Technique for global deduplication across datacenters with minimal coordination
Granted: June 16, 2020
Patent Number:
10685013
A system and method for global data de-duplication in a cloud storage environment utilizing a plurality of data centers is provided. Each cloud storage gateway appliance divides a data stream into a plurality of data objects and generates a content-based hash value as a key for each data object. An IMMUTABLE PUT operation is utilized to store the data object at the associated key within the cloud.
Converting storage objects between formats in a copy-free transition
Granted: June 16, 2020
Patent Number:
10684985
A copy-free transition tool converts storage objects from a source format associated with a source storage system to a destination format associated with a destination storage system. The transition tool exports configuration information associated with the source storage system to the destination storage system and brings the storage objects offline. Once the transition tool determines that the storage devices containing the storage objects are physically connected to the destination…
Granular dump backup restart
Granted: June 16, 2020
Patent Number:
10684918
One or more techniques and/or computing devices are provided for restarting a dump backup. For example, a phase offset table is used to track a directory transfer phase offset and a file transfer phase offset of phases of a dump backup. An offset map is used to map inodes, of data being backed up, to offsets within a backup image within which the data is being backed up. The phase offset table and/or the offset map are evaluated using a bytes written value to identify a phase during…
Selective extraction of information from a mirrored image file
Granted: May 12, 2020
Patent Number:
10649954
An embodiment of the invention provides a method to extract selected information from an image file selectively without requiring the user to restore, on the destination storage server, the image file which has the data for a file system. The selected information can be, for example, contents of a file, contents of a directory, other information from the image file. The selected information can be selectively extracted by reading the blocks of the file from the WAFL data structures that…
Systems, methods, and computer program products providing read access in a storage system
Granted: May 12, 2020
Patent Number:
10649668
A computer program product having a computer readable medium tangibly recording computer program logic for providing data access in a storage system, the computer program product including code to analyze a plurality of data access requests directed to a source volume of the storage system, code to generate a mirror volume of the source volume, the mirror volume including a subset of data items of the source volume, in which the first subset of data items is selected for the minor volume…
Enabling data replication processes between heterogeneous storage systems
Granted: April 21, 2020
Patent Number:
10628380
A system and method for enabling data replication is described. A set of protocol messages can be associated with a set of corresponding set of requests. The associated set of protocol messages can be provided to each of a source storage system and a destination storage system. The source storage system and the destination storage system can be heterogeneous storage systems that implement different types of file systems or file layouts. The source storage system and the destination…
Dynamic installation and management of virtual caching appliances
Granted: April 21, 2020
Patent Number:
10628227
It is detected that a metric associated with a first workload has breached a first threshold. It is determined that the first workload and a second workload access the same storage resources, wherein the storage resources are associated with a storage server. It is determined that the metric is impacted by the first workload and the second workload accessing the same storage resources. A candidate solution is identifier. An estimated impact of a residual workload is determined based, at…
Techniques for data migration
Granted: April 21, 2020
Patent Number:
10628194
Techniques are disclosed herein for migrating virtual machines. In an embodiment, path configuration information for the source virtual machine is stored within storage allocated to a source virtual machine that is managed by a first hypervisor. A source virtual disk is allocated to the source virtual machine. The source virtual disk includes storage blocks that are accessible by a guest operating system of the source virtual machine. The source virtual disk further includes at least one…
Synchronizing configuration of partner objects across distributed storage systems using transformations
Granted: April 14, 2020
Patent Number:
10621146
A configuration for a component of a primary node is synchronized with a configuration for a component of a partner node in a different cluster by replicating the primary node configuration with the partner node. A baseline configuration replication comprises a snapshot of a component configuration on the primary. The baseline configuration can be generated by traversing through the configuration objects, capturing their attributes and encapsulating them in a package. The baseline…
Storage tier verification checks
Granted: April 14, 2020
Patent Number:
10621162
Techniques are provided for storage tier verification checks. A determination is made that a mount operation of an aggregate of a set of volumes stored within a multi-tier storage environment has completed. A first metafile and a second metafile are maintained to track information related to the storage of objects of a volume of the aggregate within a remote object store that is a tier of the multi-tier storage environment. A distributed verification is performed between the first…
Elastic, ephemeral in-line deduplication service
Granted: April 14, 2020
Patent Number:
10621151
A deduplication service can be provided to a storage domain from a services framework that expands and contracts to both meet service demand and to conform to resource management of a compute domain. The deduplication service maintains a fingerprint database and reference count data in compute domain resources, but persists these into the storage domain for use in the case of a failure or interruption of the deduplication service in the compute domain. The deduplication service responds…
