* Alexandre Biancalana <[EMAIL PROTECTED]> [071221 12:48] wrote: > On 12/21/07, Alfred Perlstein <[EMAIL PROTECTED]> wrote: > > Hi Alfred ! > > > > > There is a lot of very good tuning advice in this thread, however > > one thing to note is that having ~1 million files in a directory > > is not a very good thing to do on just about any filesystem. > > I think I was not clear, I will try explain better. > > This Backup Server has a /backup zfs filesystem of 4TB. > > Each host that do backups to this server has a /backup/<hostname> and > /backup/<hostname>/YYYYMMDD zfs filesystems, the last contains the > backups for some day of that server. > > My problem is with some hosts that have in your directory structure a > lot of small files, independent of the hierarchy.
Can you not tar these files together? > > One trick that a lot of people do is hashing the directories themselves > > so that you use some kind of computation to break this huge dir into > > multiple smaller dirs. > > I have the two cases, when you have a lot of files inside on directory > without any directory organization/distribution but I also have > problems with hosts that have files organized in a hierarchy like > YYYY/MM/DD/<files> having no more that 200 files in the day directory > level, but almost one million of files in total. > > Just for info, I made the previous suggested tuning (raise dirhash, > maxvnodes) but this improve nothing. > > Thanks for your hint! What application are you scanning these files with? I know I had issues with rsync in particular where I had to have it rsync smaller pieces of a collection for it to work nicely instead of going for the whole heirarchy. -- - Alfred Perlstein _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
