Techniques for servicing i/o operations using redirection

One or more non-transitory computer readable media comprising code stored there that, when executed, performs a method comprising:

• receiving, at a first storage system from a host, a first I/O operation directed to a first volume, wherein the first volume is local to a second storage system and is owned by the second storage system;
• determining, at the first storage system, whether the first volume is owned by the first storage system;
• responsive to determining that the first volume is owned by the first storage system, servicing the first I/O operation locally on the first storage system;
• and
• responsive to determining that the first volume is not owned by the first storage system, performing first processing including:
• determining that the first volume is i) owned by a second storage system and ii) local to the second storage system;
• redirecting the first I/O operation from the first storage system to the second storage system that owns the first volume;
• and
• responsive to said redirecting, the second storage system servicing the first I/O operation.

A system comprising:

• one or more processors;
• and
• one or more memories comprising code stored thereon that, when executed, performs a method comprising:
• receiving, at a first storage system from a host, a first I/O operation directed to a first volume, wherein the first volume is local to a second storage system and is owned by the second storage system;
• determining, at the first storage system, whether the first volume is owned by the first storage system;
• responsive to determining that the first volume is owned by the first storage system, servicing the first I/O operation locally on the first storage system;
• and
• responsive to determining that the first volume is not owned by the first storage system, performing first processing including:
• determining that the first volume is i) owned by a second storage system and ii) local to the second storage system;
• redirecting the first I/O operation from the first storage system to the second storage system that owns the first volume;
• and
• responsive to said redirecting, the second storage system servicing the first I/O operation.