Our SVN server hd was full. Deleted a load of unwanted data on there, and all appeared to be well. However, new check-ins are now failing.
Can't move '/repos/db/txn-protorevs/1000-vr.rev' to '/repos/db/revs/1/1001': Permission denied
1000-vr.rev does not exist. There are two other files in there: 9-9.rev and 9-9.rev-lock
Edit: I have checked file permissions just in case, and all is as it should be.