[Pvfs2-developers] Re: setting xattrs on pvfs2 root

[Murali Vilayannur]

hi Phil,
Are you using 2.4. kernel versions? or 2.6?
If xattrs dont work, ACLs also won't work.
I will dig into this and let you know what I find out..
thanks,
Murali

On 6/28/07, Phil Carns <pcarns at wastedcycles.org> wrote:
> I am interested in this because it would be nice to be able to set
> tuning options at the root directory level without modifying the server
> side configuration files.  I also wonder if this issue would cause
> problems for ACLs on the root directory.
>
> -Phil
>
> Murali Vilayannur wrote:
> > Hey Phil,
> > Sorry I forgot to get back to you on this..
> > No I don't think this would work.
> > It is a kernel module issue that I hadnt tracked down fully..
> > Do you need this feature?
> > thanks,
> > Murali
> >
> > On 6/27/07, Phil Carns <pcarns at wastedcycles.org> wrote:
> >> Just pinging on this one again- has any one else bumped into this
> >> problem?
> >>
> >> -Phil
> >>
> >> Phil Carns wrote:
> >> > It looks like pvfs2 does not allow you to set xattrs on the root
> >> > directory.  Is this expected?
> >> >
> >> > # checking the mount options:
> >> >
> >> >  > mount -t pvfs2
> >> > tcp://localhost:3334/pvfs2-fs on /mnt/pvfs2 type pvfs2 (rw,user_xattr)
> >> >
> >> > # confirming that xattrs can be set on a normal directory:
> >> >
> >> >  > setfattr -n user.pvfs2.num_dfiles -v "1" /mnt/pvfs2/dir1
> >> >  > getfattr -n user.pvfs2.num_dfiles /mnt/pvfs2/dir1
> >> > getfattr: Removing leading '/' from absolute path names
> >> > # file: mnt/pvfs2/dir1
> >> > user.pvfs2.num_dfiles="1"
> >> >
> >> > # trying to set xattrs on the root directory:
> >> >
> >> >  > setfattr -n user.pvfs2.num_dfiles -v "1" /mnt/pvfs2
> >> > setfattr: /mnt/pvfs2: Operation not permitted
> >> >  > getfattr -n user.pvfs2.num_dfiles /mnt/pvfs2
> >> > /mnt/pvfs2: user.pvfs2.num_dfiles: No such attribute
> >> >
> >> > All of the above is run as root.  I don't think it is anything special
> >> > about the num_dfiles attribute either; it looks like I can't set any
> >> > xattrs on the root directory.  It always responds with "Operation not
> >> > permitted".
> >> >
> >> > -Phil
> >> >
> >>
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