[Samba] Using ZFS Case insensitive filesystems with Samba

Jonathan Buzzard jonathan at buzzard.me.uk
Tue Feb 25 15:42:45 MST 2014

On 25/02/14 21:08, Jeremy Allison wrote:
> Here's something I learned when working with the FreeNAS folks :
> ZFS can be configured to be case insensitive when
> you create the filesystem (NOTE - cannot be altered
> *after* the filesystem is created).
> zfs create -o casesensitivity=insensitive filesystem
> https://www.freebsd.org/cgi/man.cgi?query=zfs&apropos=0&sektion=0&manpath=FreeBSD+8.1-RELEASE&format=html
> Once you've done this set the following in the
> share definition in your smb.conf :
> 	path = /foo
> 	case sensitive = true
> and Samba will go *much* faster for
> directories with large numbers of files
> (we don't have to scan the directory on
> every cache miss) !

Do you have a unit test for this to show it going faster? The reason I 
ask is there is a GPFS option for the file system


which I think does something similar but IBM don't document it. It's one 
of their magic/secret options. A ready built test case would be useful 
in working out how it works/what it does...


Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
Fife, United Kingdom.

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