Am 29.04.2013 18:23, schrieb Peer Heinlein: > Am 29.04.2013 18:01, schrieb Robert Schetterer: > > > >> doing touch method may slow down your i.e cluster filesystem, database >> etc specially with high frequent logins, related how/what you need such >> timestamps >> you can get them from logs too, to get an idea > > If a system's breaking down by touching one file per login this system > should never host users, that receive more then 20 mails per day.
please read and understand what "high frequent logins" means, i am talking about i.e 2000 pop3 tls logins per second > > EVERY single stupid e-mail generates MUCH more I/O then touching > last-login. Every log line generates as much I/O, als touching this file. dont tell ,instead measure ,try i.e with high pop3 rates on drbd ocfs2 cluster and maildir > > Anyway, I never believed that cluster filesystems are a usable storage > system for mailservers. I don't like and recommend cluster filesystems > for that. i dont remember asking that, however i have that up and running and many others have too, we done tests about different filesystems if done right , its an absolut working power solution, plugin believing is not part of dovecot *g > > But, sure, your way with cron saves some I/O, that's right. its not meant to be the holy grail, but may use as simple workaround everyone needs to have logs ( i.e in big setups you have central logging ), so why not use it for this job too, instead of figure around with filestamps, database , ldap logins , change dovecot config etc > > I just remembered, that in our LDAP-lastlogin-script we simply built in > a check that READ lastlogin befor updating it and that just updated > lastlogin, if lastlogin differs from the actual date. In that case every > user generates just one LDAP-write per day, which was quite okay. i did not say yor solution is wrong or bad, but however there are many ways to goal last login target > > Peer > > > - > Heinlein Support GmbH > Schwedter Str. 8/9b, 10119 Berlin > > http://www.heinlein-support.de > > Tel: 030 / 405051-42 > Fax: 030 / 405051-19 > > Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht > Berlin-Charlottenburg, > Geschäftsführer: Peer Heinlein -- Sitz: Berlin > Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein