Offload of storage system data recovery to storage devices

A method comprising:

• storing data pages on a plurality of storage devices of a storage system, the data pages being distributed across the plurality of storage devices in a plurality of data stripes, a first storage device of the plurality of storage devices comprising a first processing device;
• identifying, by a second processing device of a storage controller of the storage system based at least in part on a failure of a second storage device of the plurality of storage devices, a data stripe of the plurality of data stripes that corresponds to a given data page that was stored on the failed second storage device;
• selecting, by the second processing device, the first storage device as a rebuild offload storage device based at least in part on information associated with the given data page;
• providing, by the second processing device, an indication of the identified data stripe to the first storage device;
• obtaining, by the first processing device based at least in part on the provided indication, data pages corresponding to the identified data stripe from at least one storage device of the plurality of storage devices other than the failed second storage device;
• performing, by the first processing device, a parity calculation based at least in part on the obtained data pages to rebuild the given data page;
• and
• storing the rebuilt given data page on a third storage device of the plurality of storage devices.

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, the program code being executable by at least one processing device of a storage system, the storage system comprising a plurality of storage devices that are configured to store data pages, the data pages being distributed across the plurality of storage devices in a plurality of data stripes, a first storage device of the plurality of storage devices comprising a first processing device, the storage system further comprising a storage controller comprising a second processing device, wherein:

• the program code, when executed by the second processing device, causes the second processing device, based at least in part on a failure of a second storage device of the plurality of storage devices:
• to identify a data stripe of the plurality of data stripes that corresponds to a given data page that was stored on the failed second storage device;
• to select the first storage device as a rebuild offload storage device based at least in part on information associated with the given data page;
• and
• to provide an indication of the identified data stripe to the first storage device;
• the program code, when executed by the first processing device, causes the first processing device, based at least in part on the provided indication:
• to obtain data pages corresponding to the identified data stripe from at least one storage device of the plurality of storage devices other than the failed second storage device;
• to perform a parity calculation based at least in part on the obtained data pages to rebuild the given data page;
• and
• to store the rebuilt given data page on a third storage device of the plurality of storage devices.