On Sat, Jul 17, 2010 at 11:19 AM, Timo Sirainen <[email protected]> wrote: > On 17.7.2010, at 18.55, Brandon Lamb wrote: > >> What is the default mailbox file size (the m* files?), > > mdbox_rotate_size = 2M > >> what actually >> happens when a message is delivered, when is a new file created, > > It tries to find an existing file to append to, and creates a new one if it > can't. The details of this aren't really perfect yet and the code should be > rewritten. > >> when a user deletes a single mail what happens, or if they delete multiple >> mails, > > A few bytes are written to index files. > >> if a users client does the move to trash then mark as deleted >> then purge, what happens inside? > > That's a COPY + delete. Same as above. > >> There was mention of no file >> truncating, so does that mean if a user deletes mails, and they are in >> 3 different mail storage files, that those messages are written to 3 >> new (or existing with free space?) mail storage files and the old ones >> just sit around using space? > > doveadm purge goes through all files that have expunged messages. It writes > them to other files the exactly the same way as any other new messages are > written (so they can be written to other existing files). After it's finished > writing them, the old files are deleted. > >> And if you never run a purge or expunge script, will your data store >> just keep growing, is there no self cleanup? With maildir, you delete >> a message and the file goes away. > > There is currently no self cleanup. There used to be for a while, but its > performance sucked. > >> I guess if someone had time to write a slightly more detailed >> explanation of how mdbox works than what is on the wiki that would be >> cool. > > Maybe some day :) > >> Also maybe a "if you run mdbox, you are going to want to know >> this and that, and do this and this and this" > > Purging is pretty much the only important part. Then there are the couple of > mdbox_* settings.
Great info thanks, I think that actually answered everything I had questions about!
