I didn't realize that I only responded to Rob here. Perhaps my additional information will shed some light on the kind of information I'm looking for. -------- Original Message -------- Subject: Re: Does anyone allow unlimited or extremely large quotas? Date: Tue, 16 Nov 2010 07:06:53 -0500 From: Dave McMurtrie <dave64@xxxxxxxxxxxxxx> To: Rob Mueller <robm@xxxxxxxxxxx> On 11/16/2010 06:45 AM, Rob Mueller wrote: > >> This may be slightly off-topic, so apologies in advance. Is there >> anyone out there who allows unlimited quota for their users or provides >> extremely large quotas when asked for? > > What do you consider extremely large? And what sort of problems are you > referring to? I don't actually know what sort of problems I'm referring to, hence the question. The big problem I can imagine would be opendir() and readdir() with a huge number of files in a directory, but the cyrus code doesn't appear to do that in a lot of places that would matter to a user (deleting an entire folder, delete sieve scripts, etc) in the course of normal operations. My manager has asked me how well Cyrus will cope with large (100GB+) or unlimited quotas. My answer to him was that it should be okay, but I have very little practical experience with such so I wanted to ask on the list. > The usual issue is just the huge number of emails and thus files that > accumulate. Creating a fresh replica, body searching, reconstructing, > etc all take quite a bit of time because of the large amount of random > IOs. Apart from that, everything does actually work ok... The only issue we ever had was with a bboard that our network group sends automated system messages to. Something in their environment went haywire and we ended up with ~1.5 million messages in that bboard. They were unable to find a client that was willing to deal with the folder to be able to clean it up. I was able to connect using imtest and SELECT and FETCH messages without any problems, though. I also recall that replication was broken by this folder, but I don't remember exactly why. So basically, I have this tiny amount of practical experience that tells me if there are 1.5 million files in a single folder, clients may be unhappy and replication may break but the server was still generally working. Any anecdotal evidence I can collect in addition to this would be helpful for me to be able to go back to my manager with. Thanks! Dave ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
