zfs discuss - Aug 2009 - ZFS CIFS problem with Ubuntu, NFS as an alternative?

Hello,

I got a very strange problem here, tried out many things, can''t solve
it.
I run a virtual machine via VirtualBox 2.2.4, with Ubuntu 9.04. OpenSolaris as
the host is 2009-06, with snv118. Now I try to mount (via CIFS) a share in
Ubuntu from OpenSolaris. Mounting is successful, I can see all files, also
change directories. But I can''t read the files! Whenever I try to copy
a file, I get a "Permission denied" from Ubuntu. But when I mount the
same share in Windows XP, I can read the files also. So might be an Ubuntu
issue, anyone also experienced this? Any logs I can check/configure to find out
more?
Here the permissions for the directory (tmns is the user I use for mounting):
dr-xr-xr-x+ 31 chris    staff        588 Aug  4 23:57 video
              user:tmns:r-x---a-R-c---:fd-----:allow
             user:chris:rwxpdDaARWcCos:fd-----:allow
(The "x" shouldn''t be necessary, but XP seems not able to
list subdirectories without it...)

So I thought about using NFS instead, which should be better for an Unix - Unix
connection anyway. But here I face another issue, which might be because of
missing knowledge about NFS...
I share the "video" directory above with the ZFS sharenfs command,
options are "anon=0,ro". Without "anon=0" I always get a
"Permission denied" when I want to mount the share via NFS on Ubuntu
(mounting with root user). But with "anon=0" I can only read the files
on the Ubuntu side with root, the mounted directory had numerical ids for owner
and group on the Ubuntu side.
Any clue how I can solve this?

Many thanks for your help, I''m not sure how to progress on this...

Cheers,

Chris
-- 
This message posted from opensolaris.org

Little update...

I can read files (within the share) with the following ACL:
-r--r--r--+  1 chris    staff         35 Aug  5 13:18 zzzzzzzz.txt
              user:tmns:r-x---a-R-c---:------I:allow
             user:chris:rwxpdDaARWc--s:------I:allow
              everyone@:r-----a-R-c--s:-------:allow

(Line with "everyone@" is added compared to the first posting.)

I thought the ZFS CIFS server would map the user used for mouting (tmns) to the
local user tmns, and I wouldn''t need the "everyone" line...
Anything wrong with my thought?

Thanks for your help.

Chris
-- 
This message posted from opensolaris.org

Christian Flaig wrote:
> Hello,
> 
> I got a very strange problem here, tried out many things, can''t
solve it.
> I run a virtual machine via VirtualBox 2.2.4, with Ubuntu 9.04. OpenSolaris
as the host is 2009-06, with snv118. Now I try to mount (via CIFS) a share in
Ubuntu from OpenSolaris. Mounting is successful, I can see all files, also
change directories. But I can''t read the files! Whenever I try to copy
a file, I get a "Permission denied" from Ubuntu. But when I mount the
same share in Windows XP, I can read the files also. So might be an Ubuntu
issue, anyone also experienced this? Any logs I can check/configure to find out
more?
> Here the permissions for the directory (tmns is the user I use for
mounting):
> dr-xr-xr-x+ 31 chris    staff        588 Aug  4 23:57 video
>               user:tmns:r-x---a-R-c---:fd-----:allow
>              user:chris:rwxpdDaARWcCos:fd-----:allow
> (The "x" shouldn''t be necessary, but XP seems not able
to list subdirectories without it...)
> 
> So I thought about using NFS instead, which should be better for an Unix -
Unix connection anyway. But here I face another issue, which might be because of
missing knowledge about NFS...
> I share the "video" directory above with the ZFS sharenfs
command, options are "anon=0,ro". Without "anon=0" I always
get a "Permission denied" when I want to mount the share via NFS on
Ubuntu (mounting with root user). But with "anon=0" I can only read
the files on the Ubuntu side with root, the mounted directory had numerical ids
for owner and group on the Ubuntu side.
> Any clue how I can solve this?
> 
> Many thanks for your help, I''m not sure how to progress on this...
> 
> Cheers,
> 
> Chris

This is better asked on cifs-discuss at opensolaris.org

They will start out by asking you to run:

http://opensolaris.org/os/project/cifs-server/files/cifs-gendiag


   -Mark

How does the permission look like on one of these files that you
have problem copying?

A network trace would also be helpful. Start the trace before you
do the mount to have a complete context, and stop it after trying
to copy a file. Don''t do any extra stuff between mounting and copying
so the trace is not polluted. You can use any tool on the client or
the server to capture the traffic. If you are sending the trace also
send the name of the file with problem and the permissions on that
file.

Thanks,
Afshin

Mark Shellenbaum wrote:
> Christian Flaig wrote:
>> Hello,
>>
>> I got a very strange problem here, tried out many things,
can''t solve it.
>> I run a virtual machine via VirtualBox 2.2.4, with Ubuntu 9.04. 
>> OpenSolaris as the host is 2009-06, with snv118. Now I try to mount 
>> (via CIFS) a share in Ubuntu from OpenSolaris. Mounting is successful, 
>> I can see all files, also change directories. But I can''t read
the
>> files! Whenever I try to copy a file, I get a "Permission
denied" from
>> Ubuntu. But when I mount the same share in Windows XP, I can read the 
>> files also. So might be an Ubuntu issue, anyone also experienced this? 
>> Any logs I can check/configure to find out more?
>> Here the permissions for the directory (tmns is the user I use for 
>> mounting):
>> dr-xr-xr-x+ 31 chris    staff        588 Aug  4 23:57 video
>>               user:tmns:r-x---a-R-c---:fd-----:allow
>>              user:chris:rwxpdDaARWcCos:fd-----:allow
>> (The "x" shouldn''t be necessary, but XP seems not
able to list
>> subdirectories without it...)
>>
>> So I thought about using NFS instead, which should be better for an 
>> Unix - Unix connection anyway. But here I face another issue, which 
>> might be because of missing knowledge about NFS...
>> I share the "video" directory above with the ZFS sharenfs
command,
>> options are "anon=0,ro". Without "anon=0" I always
get a "Permission
>> denied" when I want to mount the share via NFS on Ubuntu (mounting
>> with root user). But with "anon=0" I can only read the files
on the
>> Ubuntu side with root, the mounted directory had numerical ids for 
>> owner and group on the Ubuntu side.
>> Any clue how I can solve this?
>>
>> Many thanks for your help, I''m not sure how to progress on
this...
>>
>> Cheers,
>>
>> Chris
> 
> 
> This is better asked on cifs-discuss at opensolaris.org
> 
> They will start out by asking you to run:
> 
> http://opensolaris.org/os/project/cifs-server/files/cifs-gendiag
> 
> 
>   -Mark
> _______________________________________________
> cifs-discuss mailing list
> cifs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/cifs-discuss

On 08/05/09 07:10, Mark Shellenbaum wrote:
> Christian Flaig wrote:
>> Hello,
>>
>> I got a very strange problem here, tried out many things,
can''t solve it.
>> I run a virtual machine via VirtualBox 2.2.4, with Ubuntu 9.04. 
>> OpenSolaris as the host is 2009-06, with snv118. Now I try to mount 
>> (via CIFS) a share in Ubuntu from OpenSolaris. Mounting is successful, 
>> I can see all files, also change directories. But I can''t read
the
>> files! Whenever I try to copy a file, I get a "Permission
denied" from
>> Ubuntu. But when I mount the same share in Windows XP, I can read the 
>> files also. So might be an Ubuntu issue, anyone also experienced this? 
>> Any logs I can check/configure to find out more?
>> Here the permissions for the directory (tmns is the user I use for 
>> mounting):
>> dr-xr-xr-x+ 31 chris    staff        588 Aug  4 23:57 video
>>               user:tmns:r-x---a-R-c---:fd-----:allow
>>              user:chris:rwxpdDaARWcCos:fd-----:allow
>> (The "x" shouldn''t be necessary, but XP seems not
able to list
>> subdirectories without it...)
Why do you think the "x" is unnecessary?

Alan
>> So I thought about using NFS instead, which should be better for an 
>> Unix - Unix connection anyway. But here I face another issue, which 
>> might be because of missing knowledge about NFS...
>> I share the "video" directory above with the ZFS sharenfs
command,
>> options are "anon=0,ro". Without "anon=0" I always
get a "Permission
>> denied" when I want to mount the share via NFS on Ubuntu (mounting
>> with root user). But with "anon=0" I can only read the files
on the
>> Ubuntu side with root, the mounted directory had numerical ids for 
>> owner and group on the Ubuntu side.
>> Any clue how I can solve this?
>>
>> Many thanks for your help, I''m not sure how to progress on
this...
>>
>> Cheers,
>>
>> Chris
> 
> 
> This is better asked on cifs-discuss at opensolaris.org
> 
> They will start out by asking you to run:
> 
> http://opensolaris.org/os/project/cifs-server/files/cifs-gendiag
> 
> 
>   -Mark
> _______________________________________________
> cifs-discuss mailing list
> cifs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/cifs-discuss

Afshin, thanks for the response. You seem to be everywhere on the forum...
Respect... :-)

The ACL on the files I tried are the same, I always do a "chmod -R"
when changing ACLs on the dataset/directory.

You got a recommendation for a network trace tool? I could do it on OpenSolaris
(file server) or Ubuntu (client, virtual machine on VBox 2.2.4). I''m
not familiar with making network traces.

Many thanks for your help.

Chris
-- 
This message posted from opensolaris.org

Alan, I thought the "read_set" of the ACLs should be enough to list
directories and subdirectories, and read files of course... And this set does
not include the execute right.

Obviously I was wrong... :-)

Cheers,

Chris
-- 
This message posted from opensolaris.org