Vast Data Ltd.

Guy Keren

Avi Goren

Oded Sonin

Yogev Vaknin

Ido Yellin

Ori Mamluk

Ilan Steinberg

Hadar Hen-Zion

Erez Zilber

Nir Brifman

Gili Berg

Eli Dorfman

A method for managing lost content change requests (CCRs), the method includes (i) maintaining, by compute entities of a second storage system (SSS), states of executions of multiple CCRs of multiple categories and of multiple SSS reception times; (ii) receiving, from a first storage system (FSS), at a failure indication reception time (FIRT), a failure indication that is indicative of a certain category of the multiple categories. The certain category is associated with a failure of the FSS to receive a response, from the SSS, to a certain CCR of the certain category, that was presumably sent from the FSS to the SSS; (iii) determining, based on states of executions that are related at least to the certain category, when the SSS has completed to execute all CCRs of at least the certain category that were received by the SSS up to the FIRT; and (iv) transmitting, by the SSS, a SSS completion indication that indicates that the SSS has completed to execute all tasks that were received by the SSS up to the FIRT.

Lost write responses

A method for access control, the method may include (a) receiving, by a file server, an access request for allowing a user to access a file system entity, the user is identified by a first file system protocol (FSP) user identifier, (b) converting the first FSP user identifier to a first access control user identifier (ACUI) of the user, the first ACUI represents a combination of the user and the first FSP, (c) searching, within an access control data structure (ACUI), for a relevant access control rule associated with a member of a multiprotocol set of ACUIs of the user, wherein the multiprotocol set includes the first ACUI of the user and at least one other ACUI of the user that represents at least one combination of the user and at least one other FSP, and (d) responding to the access request based on the relevant access control rule, when finding the relevant access control.

Multiprotocol access control

A method for preventing file system case related errors, the method may include receiving, by a storage system, an indication that a case insensitive file system client intends to cache a first file of a file system; searching for match between (a) at least a part of a case-insensitive version of a case-sensitive pathname of the first file, and (b) at least a part of a case-insensitive version of a case-sensitive pathname of a second file that belongs to the file system and differs from the first file; and preventing a caching of the first file by the case insensitive file system client.

Managing case sensitivity in a multi file protocol environment

Growing community of inventors

Tel Aviv, Israel

Guy Keren