[SVN-4730] 'svnadmin verify' should check rep-cache refers to valid revs

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: svnadmin
• Assignee: Unassigned
• Reporter: Julian Foad
• Created: 23/Mar/18 10:55
• Updated: 28/Mar/18 12:14

Description

In some cases of a damaged repository, it is possible for the rep-cache to contain references to revision numbers greater than the head revision.

For example, this can happen if the most recent revision(s) in a repository are unwanted or corrupted, and I attempt recovery by deleting the unwanted revisions and rolling back the "current" file.

'svnadmin recover' (since 1.7.3, 1.8.0) prunes the rep-cache, but we cannot guarantee it was used.

The consequences of such bad references are serious: they can cause future commits to be corrupted, silently.

Therefore 'svnadmin verify' should check the rep-cache only refers to existing revisions.