On Fri, 2011-05-06 at 09:57 -0400, Jeff Darcy wrote: > On 05/06/2011 08:47 AM, Hans K. Rosbach wrote: > > Hi, I am receiving mixed signals on whether GlusterFS actually > > support xattrs on the client side. I am told that it does support > > xattrs but my tests seems to indicate that it does not. I also > > seem to recollect reading a post to this list saying that it does > > not support xattrs, but I am not able to find it now. > > > > Also a google search pretty much only tells me what I already > > know; that GlusterFS uses xattrs extensively on the server side. > > > > Here is a test on the clients root filesystem (ext4): > > [root /]# touch testfile > > [root /]# attr -s testattr -V 2 testfile > > When I attempt this same operation on an ext4 filesystem, I get > EOPNOTSUPP. When I do "man attr" it tells me why: > > attr - extended attributes on XFS filesystem objects > > The filesystem-independent programs for manipulating xattrs are getfattr > and setxattr. When I do this it works fine: > > setfattr -n user.testattr -v "foo" testfile > > Note that, in addition to using setfattr instead of attr, the above > conforms to the namespace requirements of generic xattrs by using the > "user" namespace - which depends on the filesystem being mounted with > the "user_xattr" flag. Use "man 5 attr" for more information about > how to use non-XFS xattrs. I see what you mean. However this test gives the same results: Ext4: [root /]# setfattr -n user.testattr -v "foo" testfile GlusterFS: [root storage1]# setfattr -n user.testattr -v "foo" glusterfile setfattr: glusterfile: Operation not supported Also, it seems both attr and setfattr/getfattr are from the same package: attr-2.4.44-4.el6.x86_64 I suspect these were separate in earlier distro versions perhaps. # rpm -ql attr /usr/bin/attr /usr/bin/getfattr /usr/bin/setfattr ... So, does GlusterFS not support xattrs or is my config somehow wrong? Sincerly Hans K. Rosbach
