[Samba] read only mount on Mac OS Catalina

[Paul Hartley]

On Wed, Jan 22, 2020 at 6:38 AM Rowland penny via samba <
samba at lists.samba.org> wrote:

> On 22/01/2020 14:11, Paul Hartley via samba wrote:
> > On Wed, Jan 22, 2020 at 12:42 AM Rowland penny via samba <
> > samba at lists.samba.org> wrote:
> >
> >> On 22/01/2020 06:40, Paul Hartley via samba wrote:
> >>> I have a simple samba 4.10 server on FreeBSD that I can mount using
> MacOS
> >>> Catalina 10.15.2 using either the Finder connect to server option or
> via
> >>> mount_smbfs.  I can browse directories and see files already present on
> >> the
> >>> server but when I try to write a file on Mac OS Catalina (just doing a
> >>> simple "touch filename"), I get the message "Read-only file system".
> >> When
> >>> I look at finder info for the mounted path where I want to write a
> file,
> >> my
> >>> username has read & write access.  The same username is used for user
> >>> permissions on the server.  I have spent a fair amount of time trying a
> >>> variety of remedies based on what I discover from searching online but
> >> I'm
> >>> getting nowhere.  Would anyone have insight on why I'm getting a
> >> read-only
> >>> filesystem when successfully mounting my smb share, seeing files but
> not
> >>> being able to write?
> >>>
> >>> My smb4.conf (with anonymized user and path values for this email) is
> as
> >>> follows.  The path attribute is owned by root:wheel at /home and the
> user
> >>> path within (/home/user) is owned by root:user.  /home/user also is set
> >> to
> >>> 2770.
> >> I don't know about Freebsd, but, on Linux, I would expect /home to
> >> belong to root:root with 0755 and /home/user to belong to user:user,
> >> again with 0755
> >>
> > I'm not sharing /home, I used this as a bad example to simplify here...
> A very bad example, if you have a problem with a share, show the share,
> we are not psychic
> > I'll rephrase -- I'm sharing dir2 found at /dir1/dir2.  dir2 is owned by
> > root:wheel and set to 755.  There is a subdir /dir1/dir2/user within that
> > is owned by root:user set to 2770.  I can mount /dir1/dir2 with MacOS
> > Catalina and see the contents of /dir1/dir2/user, but cannot write --
> get a
> > "read only filesystem" message.
> >
> This has come up before, your user dir is inheriting permissions from
> dir2, which 755 or rwxr-xr-x, writeable only by the owner. The fix is to
> set up two shares:
>
> [share]
>      path = /dir1/dir2
>      read only = no
>
> [share2]
>      path = /dir1/dir2/user
>      read only = no
>
> If there are multiple 'user' paths, replace 'user' with '%U'
>

Thanks -- I had tried sharing just /dir1/dir2/user before (permissions set
at 2770), and could mount, but still have a read-only filesystem.  When I
look at the permissions for the mounted /dir1/dir2/user on MacOS it is
user:staff and 700.

The file system for /dir1/dir2 is ZFS.  Could the type of file system being
shared be a factor?



>
> Rowland
>
>
>
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