Patents by Inventor Sanket Rathi
Sanket Rathi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160011814Abstract: A method for selecting a path control module (PCM) for a logical unit number (LUN) associated with a host enabled to support multiple PCMs is provided. The method may include selecting a PCM associated with the LUN from a plurality of supported PCMs. The method may also include creating an entry in a configuration database or a configuration file associated with the host, whereby the entry maps the selected PCM with a unique ID associated with the LUN. The method may further include determining a unique ID associated with a hard disk. The method may include matching the unique ID with the created entry. The method may include selecting the PCM from the matched entry based on the matching. Additionally, the method may include loading a kernel extension corresponding to the selected PCM. The method may include configuring the LUN using the loaded kernel extension corresponding to the selected PCM.Type: ApplicationFiled: July 11, 2014Publication date: January 14, 2016Inventors: Kiran K. Anumalasetty, Venkata N. Anumula, Vinod K. Boddukuri, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Publication number: 20150150000Abstract: In a method for communicating in a computing environment, a first computer establishing communication with a first virtual computer through a first virtual port using a primary port name for the first virtual port, wherein the first virtual computer is executing on a second computer. The first computer acquires an alternate port name for the first virtual port from the first virtual computer executing on the second computer. The first computer determines that the first virtual computer is not accessible using the primary port name for the first virtual port, wherein the first virtual computer is migrated to execute on a third computer. The first computer establishes communication with the first virtual computer executing on the third computer using the alternate port name of the first virtual port.Type: ApplicationFiled: December 6, 2013Publication date: May 28, 2015Applicant: International Business Machines CoprorationInventors: Kiran K. Anumalasetty, Yadagiri Rajaboina, Sanket Rathi
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Publication number: 20150149998Abstract: In a method for communicating in a computing environment, a first computer establishing communication with a first virtual computer through a first virtual port using a primary port name for the first virtual port, wherein the first virtual computer is executing on a second computer. The first computer acquires an alternate port name for the first virtual port from the first virtual computer executing on the second computer. The first computer determines that the first virtual computer is not accessible using the primary port name for the first virtual port, wherein the first virtual computer is migrated to execute on a third computer. The first computer establishes communication with the first virtual computer executing on the third computer using the alternate port name of the first virtual port.Type: ApplicationFiled: November 26, 2013Publication date: May 28, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Kiran K. Anumalasetty, Yadagiri Rajaboina, Sanket Rathi
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Patent number: 9037640Abstract: A computer implemented method processes STREAMS messages over an Infiniband system area network. STREAMS messages received at a STREAMS over Infiniband module from a STREAMS based application are encapsulated in Infiniband verbs to create an encapsulated STREAMS message. A STREAMS identifier header is appended onto the Infiniband verb. The STREAMS over Infiniband module forwards the encapsulated STREAMS message to a streams interface layer where the encapsulated STREAMS message is then forwarded to a host channel adapter of the Infiniband system area network.Type: GrantFiled: April 27, 2012Date of Patent: May 19, 2015Assignee: International Business Machines CorporationInventors: Vinod K. Boddukuri, Ramana R. Machireddy, Abhishek Mishra, Sanket Rathi
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Publication number: 20150100770Abstract: Dynamic reconfiguration of queue pairs in a data processing system is provided. A device driver determines whether a dynamic CPU reconfiguration has added one or more CPUs to the data processing system, wherein the data processing system comprises a number of CPUs and a number of queue pairs. Responsive to the dynamic CPU configuration adding one or more CPUs, the device driver allocates a portion of a memory corresponding to a queue pair, wherein each queue pair comprises a receive queue and a transmit queue, programs a receive side scaling mechanism in a network adapter to allow for dynamic insertion of a processing engine associated with the queue pair, and enables transmit tuple hashing to the queue pair.Type: ApplicationFiled: October 9, 2013Publication date: April 9, 2015Applicant: International Business Machines CorporationInventors: Harikrishna K. Manchineni, Sanket Rathi, Prashant Sreedharan
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Publication number: 20150100771Abstract: Dynamic reconfiguration of queue pairs in a data processing system is provided. A device driver determines whether a dynamic CPU reconfiguration has added one or more CPUs to the data processing system, wherein the data processing system comprises a number of CPUs and a number of queue pairs. Responsive to the dynamic CPU configuration adding one or more CPUs, the device driver allocates a portion of a memory corresponding to a queue pair, wherein each queue pair comprises a receive queue and a transmit queue, programs a receive side scaling mechanism in a network adapter to allow for dynamic insertion of a processing engine associated with the queue pair, and enables transmit tuple hashing to the queue pair.Type: ApplicationFiled: January 6, 2014Publication date: April 9, 2015Applicant: International Business Machines CorporationInventors: Harikrishna K. Manchineni, Sanket Rathi, Prashant Sreedharan
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Patent number: 8898222Abstract: A computer implemented method processes STREAMS messages over an Infiniband system area network. STREAMS messages received at a STREAMS over Infiniband module from a STREAMS based application are encapsulated in Infiniband verbs to create an encapsulated STREAMS message. A STREAMS identifier header is appended onto the Infiniband verb. The STREAMS over Infiniband module forwards the encapsulated STREAMS message to a streams interface layer where the encapsulated STREAMS message is then forwarded to a host channel adapter of the Infiniband system area network.Type: GrantFiled: January 19, 2012Date of Patent: November 25, 2014Assignee: International Business Machines CorporationInventors: Vinod K. Boddukuri, Ramana R. Machireddy, Abhishek Mishra, Sanket Rathi
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Publication number: 20140157046Abstract: A technique for operating a storage area network includes detecting an input/output operation failure associated with a logical unit number, which is associated with a first target port. The technique also includes determining, subsequent to the detected input/output operation failure, whether the logical unit number is associated with a second target port. Finally, the technique includes routing subsequent input/output operations for the logical unit number to the logical unit number via the second target port, in response to determining that the logical unit number is associated with the second target port.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: KIRAN KUMAR ANUMALASETTY, PHANI KUMAR AYYAGARI, SUDHIR MADDALI, RAMESH KUMAR MARUPAKA, SANKET RATHI
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Publication number: 20140082433Abstract: A method is disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.Type: ApplicationFiled: November 20, 2013Publication date: March 20, 2014Applicant: International Business Machines CorporationInventors: Kiran K. Anumalasetty, Nicholas S. Ham, Purna Chandra Jasti, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Patent number: 8645586Abstract: A method is disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.Type: GrantFiled: April 20, 2012Date of Patent: February 4, 2014Assignee: International Business Machines CorporationInventors: Kiran K Anumalasetty, Nicholas S Ham, Purna Chandra Jasti, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Patent number: 8639856Abstract: A system and computer program product are disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.Type: GrantFiled: August 4, 2011Date of Patent: January 28, 2014Assignee: International Business Machines CorporationInventors: Kiran K Anumalasetty, Nicholas S Ham, Purna Chandra Jasti, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Publication number: 20130191548Abstract: A computer implemented method processes STREAMS messages over an Infiniband system area network. STREAMS messages received at a STREAMS over Infiniband module from a STREAMS based application are encapsulated in Infiniband verbs to create an encapsulated STREAMS message. A STREAMS identifier header is appended onto the Infiniband verb. The STREAMS over Infiniband module forwards the encapsulated STREAMS message to a streams interface layer where the encapsulated STREAMS message is then forwarded to a host channel adapter of the Infiniband system area network.Type: ApplicationFiled: April 27, 2012Publication date: July 25, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Vinod K. Boddukuri, Ramana R. Machireddy, Abhishek Mishra, Sanket Rathi
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Publication number: 20130191547Abstract: A computer implemented method processes STREAMS messages over an Infiniband system area network. STREAMS messages received at a STREAMS over Infiniband module from a STREAMS based application are encapsulated in Infiniband verbs to create an encapsulated STREAMS message. A STREAMS identifier header is appended onto the Infiniband verb. The STREAMS over Infiniband module forwards the encapsulated STREAMS message to a streams interface layer where the encapsulated STREAMS message is then forwarded to a host channel adapter of the Infiniband system area network.Type: ApplicationFiled: January 19, 2012Publication date: July 25, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Vinod K. Boddukuri, Ramana R. Machireddy, Abhishek Mishra, Sanket Rathi
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Patent number: 8380852Abstract: A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.Type: GrantFiled: December 23, 2009Date of Patent: February 19, 2013Assignee: International Business Machines CorporationInventors: James P. Allen, Kiran Kumar Anumalasetty, Sudhir Maddali, Sanket Rathi, Manish Sharma
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Patent number: 8380839Abstract: A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.Type: GrantFiled: March 22, 2012Date of Patent: February 19, 2013Assignee: International Business Machines CorporationInventors: James P. Allen, Kiran Kumar Anumalasetty, Sudhir Maddali, Sanket Rathi, Manish Sharma
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Publication number: 20130036241Abstract: A method is disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.Type: ApplicationFiled: April 20, 2012Publication date: February 7, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Kiran K. Anumalasetty, Nicholas S. Ham, Purna Chandra R. Jasti, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Publication number: 20130036240Abstract: A system and computer program product are disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.Type: ApplicationFiled: August 4, 2011Publication date: February 7, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Kiran K Anumalasetty, Nicholas S. Ham, Purna Chandra R. Jasti, Sudhir Maddali, Yadagiri Rajaboina, Sanket Rathi
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Publication number: 20120179807Abstract: A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.Type: ApplicationFiled: March 22, 2012Publication date: July 12, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James P. Allen, Kiran Kumar Anumalasetty, Sudhir Maddali, Sanket Rathi, Manish Sharma
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Patent number: 8086896Abstract: In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.Type: GrantFiled: December 28, 2009Date of Patent: December 27, 2011Assignee: International Business Machines CorporationInventors: James P. Allen, Kiran K. Anumalasetty, Sudhir Maddali, Bhyrav M. Mutnury, James A. Pafumi, Sanket Rathi, Stephen M. Tee
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Publication number: 20110173506Abstract: A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.Type: ApplicationFiled: December 23, 2009Publication date: July 14, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James P. Allen, Kiran Kumar Anumalasetty, Sudhir Maddali, Sanket Rathi, Manish Sharma