[Samba] why do file locks revert to root ( fairly long)

[Bret Hughes]

I help an NT admin that has recently added a redhat 8.0 based samba
server to his network. the share is one that is a core service for the
operation of the business and has about 50 users constantly accessing
data from several accounting and tax preparation applications.

One of the primary applications requires update farily recently as of
late and the admin is having problems getting all files in a specific
directory to release so they can be updated.

Procedure is that all users are asked to close the application and even
when they have all shut down the app, lsof still reports files in use by
smbd processes owned by root.  Under normal circumstances lsof reports
files in use for the user logged on and usually several root owned
processes as well.

If I take the smbd pids that are there as root and grep the output of
netstat -ap I see that the smbd network connection is still active to
the machine. 

What state is this process in?  Is there some caching that occurs for a
period of time that allows the user to reattach to the smbd process or
what?

What is the best way to nicely clean up these processes?

Any insight appreciated.

Bret

here is some info 

Inorder to track this down I use the following script

#!/bin/bash
DIR="/apps/Lacerte/02tax/"
#DIR="/var"
echo "All users with locks in $DIR"
declare -a PIDS
lsof +D $DIR |awk '{print $2 " " $3}'|sort -nu

echo "netstat connections for root owned pids"
PIDS=($(lsof +D $DIR |awk '/root/ {print $2}' |sort -u))

for pid in ${PIDS[*]}; do
    netstat -ap |grep $pid; done
exit


Here is the output that illustrates the issue.
[root at solin bin]# lacerteuser.sh 
All users with locks in /apps/Lacerte/02tax/
PID USER
4320 root
netstat connections for root owned pids
tcp        0      0 solin.inter:netbios-ssn SANDYSI.internal.s:2859 ESTABLISHED 4320/smbd           
udp        0      0 localhost.localdo:32936 *:*                                 4320/smbd           
unix  3      [ ]         STREAM     CONNECTED     85701  4320/smbd           

  
[root at solin bin]# smbstatus

Samba version 2.2.7
Service      uid      gid      pid     machine
----------------------------------------------
APPS         DOMAIN+sandy DOMAIN+Domain Users  4320   sandysi  (10.0.0.208) Tue Mar 25 09:59:27 2003
APPS         DOMAIN+Jim DOMAIN+Domain Users  1665   stantest2k (10.0.0.190) Fri Mar 28 14:47:33 2003
APPS         DOMAIN+ron DOMAIN+Domain Users 25387   rone     (10.0.0.195) Thu Mar 27 09:07:47 2003
APPS         DOMAIN+John DOMAIN+Domain Users  3550   johng    (10.0.0.187) Sat Mar 29 08:56:03 2003
IPC$         DOMAIN+Jim DOMAIN+Domain Users 18723   jims     (10.0.0.207) Thu Mar 27 10:17:04 2003
APPS         DOMAIN+Jim DOMAIN+Domain Users 18723   jims     (10.0.0.207) Wed Mar 26 15:32:04 2003
ADMIN        DOMAIN+Jim DOMAIN+Domain Users 18723   jims     (10.0.0.207) Wed Mar 26 16:02:16 2003

Locked files:
Pid    DenyMode   Access      R/W        Oplock           Name
--------------------------------------------------------------
4320   DENY_NONE  0x20089     RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/usoutput.i02   Sat Mar 29 18:01:46 2003
4320   DENY_NONE  0x20089     RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/OPTION02/OPT019.W2   Sat Mar 29 18:01:45 2003
4320   DENY_NONE  0x20089     RDONLY     NONE             /apps/Lacerte/02tax/opdata.w2   Fri Mar 28 17:37:05 2003
4320   DENY_ALL   0x2019f     RDWR       NONE             /apps/Lacerte/02tax/OPTION02/SID019A.w2   Fri Mar 28 17:37:05 2003
4320   DENY_WRITE 0x20        RDONLY     NONE             /apps/Lacerte/02tax/engine02.dll   Fri Mar 28 17:37:07 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/OPTION02/RECURRG2.MDX   Fri Mar 28 17:37:06 2003
4320   DENY_WRITE 0x20        RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/i2usfunc.dll   Sat Mar 29 18:01:45 2003
4320   DENY_NONE  0x2019f     RDWR       EXCLUSIVE+BATCH  /apps/Lacerte/02tax/IDATA/DATA1I02.MDX   Sat Mar 29 18:01:51 2003
4320   DENY_NONE  0x20089     RDONLY     NONE             /apps/Lacerte/02tax/OPTION02/WURN.W2   Fri Mar 28 17:37:04 2003
4320   DENY_NONE  0x20089     RDONLY     NONE             /apps/Lacerte/02tax/URN.W2   Fri Mar 28 17:37:05 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/OPTION02/RECURRG2.DBF   Fri Mar 28 17:37:06 2003
4320   DENY_NONE  0x20089     RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/uscodes.i02   Sat Mar 29 18:01:51 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/OPTION02/APTG2.MDX   Fri Mar 28 17:37:06 2003
4320   DENY_WRITE 0x20        RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/i2usdiag.dll   Sat Mar 29 18:01:46 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/IDATA/DATA1I02.DBF   Sat Mar 29 18:01:51 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/IDATA/DATA1I02.DBF   Sat Mar 29 18:01:50 2003
4320   DENY_WRITE 0x20        RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/i2us.dll   Sat Mar 29 18:01:45 2003
4320   DENY_NONE  0x2019f     RDWR       NONE             /apps/Lacerte/02tax/OPTION02/APTG2.DBF   Fri Mar 28 17:37:06 2003
4320   DENY_NONE  0x20089     RDONLY     EXCLUSIVE+BATCH  /apps/Lacerte/02tax/ind/uswosi.i02   Sat Mar 29 18:01:51 2003