file locking

MCCALL,DON (HP-USA,ex1) don_mccall at hp.com
Fri Mar 16 19:06:29 GMT 2001


Hi Robin,
you can go into the 'tools/folder options/file types' and remove the link
beteen
the .mp3 filetype and the program that windows will launch to play it, but I
don't
think you really want to do that - this problem is going to come up with
other file
types as well, like .wav files.  Really need to understand WHY you are not
being able 
to rename a file for which YOU have the lock in the first place.  For that
we need to
understand your environment better.  What os are you running samba on top
of; what version
of samba are you running.  Also, do an ll -d on each directory from the root
down to the directory the .mp3 files are in so we can verify execute access
all the way down the tree.
Finally if you could post (sans comments) your entire smb.conf file, maybe
there is a 
parameter there that is causing this behavior.  If you do this, perhaps I
can reproduce a little portion of your environment here, and see if I can
duplicate the behavior.
Hope this helps,
Don

-----Original Message-----
From: Robin P. Blanchard [mailto:Robin_Blanchard at gactr.uga.edu]
Sent: Friday, March 16, 2001 11:53 AM
To: MCCALL,DON (HP-USA,ex1)
Cc: samba at lists.samba.org
Subject: Re: file locking


Hey Don -

Thanks for the reply...
Here goes with my attempt at recreating your test:

on win2k client:
create z:\Pop\U2\test.txt

on samba-server:
database 1# ls -ald /export/fs2/mp3/Pop/U2/test.txt 
-rw-rw-r--    1 service  noc            4 Mar 16 10:41
/export/fs2/mp3/Pop/U2/test.txt

file permissions are correct.

now, test the locking problem:
right-click on test.txt on win2k, then check smbstatus:

database 3# /usr/samba/bin/smbstatus

Samba version 2.0.7
Service      uid      gid      pid     machine
----------------------------------------------
MP3          service  noc      31988   robin    (10.10.100.126) Thu Mar 15
11:09:23 2001

No locked files


so, seems you're right. one more test:

database 6# cp -a U2-Always.mp3 U2-Always.txt

right-click on each, and check smbstatus:

(U2-Always.mp3)
Samba version 2.0.7
Service      uid      gid      pid     machine
----------------------------------------------
MP3          service  noc      31988   robin    (10.10.100.126) Thu Mar 15
11:09:23 2001

Locked files:
Pid    DenyMode   R/W        Oplock           Name
--------------------------------------------------
31988  DENY_WRITE RDONLY     EXCLUSIVE+BATCH 
/export/fs2/mp3/Pop/U2/U2-Always.mp3   Fri Mar 16 10:52:00 2001

annoying as suspected.

(U2-Always.txt)
Samba version 2.0.7
Service      uid      gid      pid     machine
----------------------------------------------
MP3          service  noc      31988   robin    (10.10.100.126) Thu Mar 15
11:09:23 2001

Locked files:
Pid    DenyMode   R/W        Oplock           Name
--------------------------------------------------
31988  DENY_WRITE RDONLY     EXCLUSIVE+BATCH 
/export/fs2/mp3/Pop/U2/U2-Always.mp3   Fri Mar 16 10:52:00 2001


So, yes, it seems you've nailed this one. Changing an mp3 file to a txt file
causes it to no longer get locked, thus allowing operation on that file (in
particular, I am able to rename/move that file).
I am, however, still unable to rename/move mp3 files; why you seem to
be able to do so is mysterious.
I would tend to agree with you that this stems from win2k giving the option
to play those files. It would seem then that the answer would be to prevent
windows from 'queueing-up' audio files. You wouldn't happen to know how
to accomplish that would you? :)

Thanks and all further input is greatly appreciated.



> Don't know WHY this is happening, but it appears to have to do with the
mp3
> file type; I can duplicate this if I create a simple .txt file, and rename
> it
> to something.mp3; when it's a .txt file, right clicking does NOT lock it,
> but as soon as I rename it to .mp3, then I get the behavior you describe.
> I suspect this is because of the additional options you see that Microsoft
> is presenting because its an mp3 file (like 'play', etc.).
> However, I AM able to rename it without any problem; try something for me;
> go into that same directory where the .mp3 file is, and create a .txt
file;
> now check you unix permissions - is the ownership and group and
permissions
> what you expect?  I am wondering if your unix umask may be interfering
with
> the way the files are getting created/moved.  you might need FORCE create
> mode
> instead of just create mode...
> Hope this helps,
> Don
> 
> -----Original Message-----
> From: Robin P. Blanchard [mailto:Robin_Blanchard at gactr.uga.edu]
> Sent: Thursday, March 15, 2001 12:00 PM
> To: samba at lists.samba.org
> Subject: file locking
> 
> i have having the most annoying file locking problems given the following
> setup:
> 
> server: IRIX 6.5.11 + samba-2.0.7 irix binary (from samba website)
> client: win2k
> 
> when on the client, simply right-clicking on the file causes samba to lock
> it, thus making it impossible to rename/move that file. all file
permissions
> seem correct.
> 
> reset directory/file permissions to be sure this is accurate:
> 
> find /export/fs2/mp3 -type f -exec chmod 664 {} \;
> find /export/fs2/mp3 -type d -exec chmod 2775 {} \;
> 
> database 22# pwd
> /export/fs2/mp3/Pop/U2
> database 23# ls -ald .
> drwxrwsr-x    5 service  noc         4096 Mar 12 13:25 .
> database 24# ls -ald U2-Summer.Rain.mp3
> -rw-rw-r--    1 service  noc       5962315 Oct 13 09:02 U2-Summer.Rain.mp3
> 
> looks great so start up samba:
> 
> database 25# /etc/init.d/samba start
> 
> see what smbstatus has to say:
> 
> database 26# /usr/samba/bin/smbstatus
> 
> Samba version 2.0.7
> Service      uid      gid      pid     machine
> ----------------------------------------------
> 
> No locked files
> 
> go over to win2k and right click on a file and check smbstatus again:
> 
> database 27# /usr/samba/bin/smbstatus
> 
> Samba version 2.0.7
> Service      uid      gid      pid     machine
> ----------------------------------------------
> MP3          service  noc      31988   robin    (10.10.100.126) Thu Mar 15
> 11:09:23 2001
> 
> Locked files:
> Pid    DenyMode   R/W        Oplock           Name
> --------------------------------------------------
> 31988  DENY_WRITE RDONLY     EXCLUSIVE+BATCH
> /export/fs2/mp3/Pop/U2/U2-Always.mp3   Thu Mar 15 11:09:31 2001
> 
> so just for kicks see if we can rename that file in win2k:
> 
> "cannot rename U2-Always: access is denied. make sure that
> the disk is not full or write-protected and that the file
> is not currently in use"
> 
> i've been staring at this for days and have no idea as to
> what the hell is going on. any suggestions are greatly appreciated.
> here's my smb.conf stuff:
> [MP3]
>    comment = MP3
>    path = /export/fs2/mp3
>    guest ok = no
>    browseable = no
>    writable = yes
>    write list = @noc
>    create mask = 0664
>    directory mask = 2775
>    force user = service
>    force group = noc
> 


-- 
------------------------------------
Robin P. Blanchard
IT Program Specialist
Georgia Center for Continuing Ed.
fon: 706.542.2404 fax: 706.542.6546
email: Robin_Blanchard at gactr.uga.edu
------------------------------------




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