On 10 May, 2010 - charles sent me these 0,8K bytes: > Hi, > > This thread refers to Solaris 10, but it was suggested that I post it here as > ZFS developers may well be more likely to respond. > > http://forums.sun.com/thread.jspa?threadID=5438393&messageID=10986502#10986502 > > Basically after about ZFS 1000 filesystem creations the creation time slows > down to around 4 seconds, and gets progressively worse. > > This is not the case for normal mkdir which creates thousands of directories > very quickly. > > I wanted users home directories (60,000 of them) all to be individual ZFS > file systems, but there seems to be a bug/limitation due to the prohibitive > creation time.
If you're going to share them over nfs, you'll be looking at even worse times. In my experience, you don't want to go over 1-2k filesystems due to various scalability problems, esp if you're doing NFS as well. It will be slow to create and slow when (re)booting, but other than that it might be ok.. Look into the zfs userquota/groupquota instead.. That's what I did, and it's partly because of these issues that the userquota/groupquota got implemented I guess. /Tomas -- Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/ |- Student at Computing Science, University of Umeå `- Sysadmin at {cs,acc}.umu.se _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
