[gentoo-user] More file system frustration

[gentoo-user] More file system frustration

[William Kenworthy]

If I try and do:

moriah ~ # mount -t ceph 192.168.44.68:6789:/ /mnt/ceph -o users
mount error 22 = Invalid argument

It turns out the driver doesnt recognise the user or users mount option
and gentoo wont let a user mount or access a root mount, or even let a
user mount.  Tried adding the user to the disk group without any effect.

Something in gentoo's user access control is causing this problem I
think, so how can I get around it?

BillK

Re: [gentoo-user] More file system frustration

[Bill Kenworthy]

On Thu, 2012-11-08 at 17:59 +0800, William Kenworthy wrote:
> If I try and do:
> 
> moriah ~ # mount -t ceph 192.168.44.68:6789:/ /mnt/ceph -o users
> mount error 22 = Invalid argument
> 
> It turns out the driver doesnt recognise the user or users mount option
> and gentoo wont let a user mount or access a root mount, or even let a
> user mount.  Tried adding the user to the disk group without any effect.
> 
> Something in gentoo's user access control is causing this problem I
> think, so how can I get around it?
> 
> BillK
> 
> 

I was able to chown the mount so a user can access it - not as flexible
as the normal way but its user accessible.

BillK

Re: [gentoo-user] More file system frustration

[Kerin Millar]

William Kenworthy wrote:
> If I try and do:
>
> moriah ~ # mount -t ceph 192.168.44.68:6789:/ /mnt/ceph -o users
> mount error 22 = Invalid argument
>

Specifying "users" in that context doesn't make sense. Try creating an 
entry in /etc/fstab. For example:

192.168.44.68:6789:/    /mnt/ceph    ceph    users    0 0

Then see if you can mount by its mountpoint:

$ mount /mnt/ceph

> It turns out the driver doesnt recognise the user or users mount option
> and gentoo wont let a user mount or access a root mount, or even let a
> user mount.  Tried adding the user to the disk group without any effect.
>

It's not a driver option. /bin/mount is suid root and refers to fstab to 
decide whether a non-root user should be allowed to mount.

Generally speaking, regular user accounts should not be added to the 
disk group. That provides raw read/write access to block device nodes 
such as dev/sda, which is a potential risk both in terms of safety and 
security.

> Something in gentoo's user access control is causing this problem I
> think, so how can I get around it?
>
> BillK
>
>
>
>

Re: [gentoo-user] More file system frustration

[William Kenworthy]

On Thu, 2012-11-08 at 10:58 +0000, Kerin Millar wrote:
> William Kenworthy wrote:
> > If I try and do:
> >
> > moriah ~ # mount -t ceph 192.168.44.68:6789:/ /mnt/ceph -o users
> > mount error 22 = Invalid argument
> >
> 
> Specifying "users" in that context doesn't make sense. Try creating an 
> entry in /etc/fstab. For example:
> 
> 192.168.44.68:6789:/    /mnt/ceph    ceph    users    0 0
> 
> Then see if you can mount by its mountpoint:
> 
> $ mount /mnt/ceph
> 
> > It turns out the driver doesnt recognise the user or users mount option
> > and gentoo wont let a user mount or access a root mount, or even let a
> > user mount.  Tried adding the user to the disk group without any effect.
> >
> 
> It's not a driver option. /bin/mount is suid root and refers to fstab to 
> decide whether a non-root user should be allowed to mount.
> 
> Generally speaking, regular user accounts should not be added to the 
> disk group. That provides raw read/write access to block device nodes 
> such as dev/sda, which is a potential risk both in terms of safety and 
> security.
> 
> > Something in gentoo's user access control is causing this problem I
> > think, so how can I get around it?
> >
> > BillK
> >
> >

Thanks Kerin, but that has the same problem - but it did allow me to
chown the mount point so its usable/testable by users.

BillK