Data integrity checking in a distributed filesystem using object versioning

A non-transitory computer-readable storage medium including instructions that, when executed by a processing device, cause the processing device to:

• obtain an object version of an object being modified from a data store, wherein the object version corresponds to an on-disk object version of the object, wherein the on-disk value of the object version has a numeric data type, and wherein the on-disk value of the object version is updated responsive to modifications performed on the object conditionally upon an increment indicator being set on the on-disk value of the object version;
• create a signature for the object using the object;
• assign a signing version to the object, the signing version representing a value of the object version when the signature for the object is created, wherein the value of the signing version of the object has the numeric data type, and wherein the value of the signing version is updated responsive to generation of signatures of the object;
• mark, by the processing device, before assigning the signing version of the object, the object as a candidate for version incrementation to indicate that the object version of the object is to be updated responsive to a subsequent modification made to the object;
• and
• perform a data integrity analysis on the object responsive to determining that the signing version of the object and the on-disk object version of the object match.

A system comprising:

• a memory;
• and
• a processing device, operatively coupled to the memory, to:
• identify an object that is associated with an object version indicating a modification operation that has been performed on the object, wherein the object is associated with a signing version having a corresponding first signature for the object, wherein the first signature is stored in a data store and is generated using at least one of data or metadata of the object associated with the first signature, and wherein the signing version of the object is stored in the data store;
• obtaining an on-disk value of the object version stored in the data store, wherein the on-disk value of the object version has a numeric data type, and wherein the on-disk value of the object version is updated responsive to the modification operation performed on the object conditionally upon an increment indicator being set on the on-disk value of the object version;
• obtaining a value of the signing version of the object stored in the data store, wherein the value of the signing version of the object has the numeric data type, and wherein the value of the signing version is updated responsive to a generation of the first signature of the object;
• determine whether the object is currently under modification by comparing a current on-disk value of the object version to the stored value of the signing version of the object;
• and
• responsive to determining that the on-disk value of the object version does not match the value of the signing version:
• determine that the object is currently under modification, and
• exclude the object from a data integrity analysis, wherein to perform the data integrity analysis on the object, the processing device is to create a second signature for the object using the data of the object.