We use ext4 for more than one year now. Efficient and stable. A good choise 12 spool of 250GB over 10 FC disks using metalun.
Dom 2010/11/16 Robert Mueller <r...@fastmail.fm> > > > > This is depends on what filesystem you are useing, I have mailboxes > with hundreds > > > of thousands of messages in them on XFS and have no problems, but on > ext3 I > > > start seeing slowdowns with a bit over ten thousand messages. > > > > Was dir_index enabled on that ext3 filesystem? Prior to dir-index ext3 > > was very slow for large folders. dir_index is not enabled by default in > > ext3. > > FYI our experience at Fastmail 2 years back was that reiserfs still much > better than ext3 (even with dir_index) at handling large numbers of > files in folders. We tried switching one server to ext3, but after a > week or two it was being crushed by load and we switched back to > reiserfs. > > However we've recently found that ext4 is at least as good as reiserfs > at handling large directories, so we've started switching everything to > ext4 and so far the migration is going well. > > So don't use ext3, but ext4 is ok. > > Oh, and we recently setup a spare machine with btrfs and tried > replicating a few partitions to it. That wasn't good. Started off > promising, but by the time it was 1/3 full, the machine was utterly > crawling. Clearly not ready for production yet. > > Rob > ---- > Cyrus Home Page: http://www.cyrusimap.org/ > List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ > -- Dominique LALOT Ingénieur Systèmes et Réseaux http://annuaire.univmed.fr/showuser.php?uid=lalot
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