(Illustration by Gaich Muramatsu)
On Wed, May 02, 2007 at 09:29:25AM -0400, shivers_at_ccs.neu.edu wrote: > When & how do these things get created? /usr/sbin/venus-setup doesn't do it. > Does venus do it when it comes up if they don't exist? Yes, the client pre-allocates space for all file system objects, volume information, hoard entries and reintegration log records. I think this is most likely done to avoid fragmentation in the recoverable memory area which stays around across venus restarts. I think only directory data is dynamically allocated, but those allocations are for fixed 2KB chunks. The server only pre-allocates volume structures, everything else, file objects, directory data and resolution logs are dynamically allocated in RVM. The server periodically dumps used and free RVM memory to its log and there are tools to serialize/dump all the server metadata and restore it to a larger RVM data area when needed (with norton-reinit). The client will set up a new RVM log and data when there isn't any, when venus is started with the -init flag, or when there is a file named INIT in the venus.cache directory, which is typically at /usr/coda/venus.cache or /var/lib/coda/cache. JanReceived on 2007-05-02 18:33:17