svnadmin: Can't open file '/mnt/severn_svn/dvd_copy/db/locks' for reading

Just an FYI regarding the upgrade from svn 1.1.x to 1.2.x that I didn't
see in the release notes:

I run "svnadmin hotcopy ${db_path} ${backup_path}" nightly for backups.
The night after my svn upgrade, this started failing with this error
message:

svnadmin: Can't open file '/mnt/severn_svn/dvd_copy/db/locks' for reading

I found that simply accessing the repositories in question with a 1.2.1
version of mod_dav_svn was enough to fix the problem (I have a bunch of
repositories, and only tested some after the upgrade - those already
accessed were backed up OK). A simple "svn update" on the client was
enough to solve the problem.

Just though I'd let you know - might be worth mentioning in the release
notes. Note that I'm not subscribed to this list, so mail me direct with
any questions.

Thanks.