On Sat, Jun 19, 2010 at 4:57 AM, mac_man2...@hotmail.it <mac_man2...@hotmail.it> wrote: > Tom, Robert, > thank you. > > Now it is clearer how space on tapes is recycled. > > I tried to follow Robert's example but storing one tape per separate file. > Read in the first block of each run (hosted by separate tapes and so by > separate files) and output them into extra storage, wherever this extra > storage is. > Again, those first input blocks are now garbage: is it correct?
Yes. > In this case, what happens when trying to recycle those garbage blocks by > hosting the result of merging the second block of each run? You just overwrite them with the new data. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
