> > Friday, November 23, 2012 5:38 AM Muhammad Usama wrote:
> >- I think when finding the max LSN of single file the utility should > > consider all relation segments.
> Would you like to find for all relation related segments: > Like 12345, 12345.1 ... 12345.n Or > 12345, 12345.1 ... and 12345_vm, 12345.1_vm > > But how about if user asks for 12345.4, do we need to find all greater > than 12345.4? >
> IMHO, as this utility is not aware of relation or any other logical > entity and deals with only file or directory, it is okay to find > only for that file.
Hmm. I think I'd expect that if I give pg_computemaxlsn a number, it should consider that it is a relfilenode, and so it should get a list of all segments for all forks of it. So if I give "12345" it should get 12345, 12345.1 and so on, and also 12345_vm 12345_vm.1 and so on. However, if what I give it is a path, i.e. it contains a slash, I think it should only consider the specific file mentioned. In that light, I'm not sure that command line options chosen are the best set.
