Data communication coordination with sequence numbers

A computer readable memory, comprising instructions that, when executed by at least one processor, cause the at least one processor to perform a method, the method comprising:

• establishing, by a server, a valid command window comprising at least one sequence number;
• granting the client a maximum number of one or more blocking operation credits;
• receiving, at the server, a file system command that consumes at least one server resource, the file system command including an associated first sequence number and an operation context value indicating that the file system command is a blocking operation;
• determining whether the associated first sequence number is within the valid command window and whether the client has exceeded the maximum number of one or more blocking operation credits;
• processing the file system command when it is determined that the associated sequence number is within the valid command window and the client has not exceeded the maximum number of one or more blocking operation credits;
• and
• adjusting the valid command window to include an additional unused sequence number.

A system comprising:

• at least one processor;
• a computer readable memory, operatively connected to the at least one processor and containing instructions that, when executed by the at least one processor, cause the at least one processor to perform a method, the method comprising:
• establishing, by a server, a valid command window comprising at least one sequence number;
• granting the client a maximum number of one or more blocking operation credits;
• receiving, at the server, a file system command that consumes at least one server resource, the file system command including an associated first sequence number and an operation context value indicating that the file system command is a blocking operation;
• determining whether the associated first sequence number is within the valid command window and whether the client has exceeded the maximum number of one or more blocking operation credits;
• processing the file system command when it is determined that the associated sequence number is within the valid command window and the client has not exceeded the maximum number of one or more blocking operation credits;
• and
• adjusting the valid command window to include an additional unused sequence number.