[Samba] Samba Process Getting Hanged

[mallapadi niranjan]

Hi all

I have a samba pdc with ldap backend (Samba 3.0.21c with openldap 2.3.19).
We have Another Linux System as Domain Member Server which we use as
file server (samba 3.0.21c) .
The Operating System is Redhat Enterprise Linux 4 with kernel 2.6.9-5 smp
kernel.
The Hardware Architecture of our file server is
Inter Xseries 226, 32-bit ,
3.GHz Processor
1Gb RAM
72-GB Scsi Hard-disk

We have
1) Too many smbd process getting created ie up to 160 process.
2) when ever a user access the file server, a process gets created by userid
, but when the user closes and logs off, the process
doesn't get killed
after keeping dead time = 15 in smb.conf of file server.
3) If after reboot , the file server works fine for some time at first, the
process gets created and killed properly as the day progresses
and as the number of processes gets increased , it tends to slowdown, and
user even after exiting from the computer , ther process
created by userid doesn't gets killed.
4) some times, if it gets killed, very rarely then  the memory is not
released ( ie eventhough there are less process , but memory occupied is
1Gb,. we donot have any other services on our file server except samba).

Is ther any problem with my configuration ? Please Help me out


The following is smb.conf file
##################################################################################

[global]
unix charset = LOCALE
workgroup = msdpl.com
netbios name = prjsrv01
server string = Project Server 1
printcap name = /etc/printcap
load printers = yes
cups options = raw
log level = 2
log file = /usr/local/samba3c3/var/%U.%m.log
syslog = 0
max log size = 1000
smb ports = 139
security = domain
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
deadtime = 15
kernel oplocks = No
name resolve order = wins bcasts hosts
wins server = 192.168.129.20
dns proxy = no
ldap server = 192.168.129.20
ldap suffix = dc=msdpl,dc=com
ldap machine suffix = ou=Computers
ldap user suffix = ou=People
ldap group suffix = ou=Groups
ldap idmap suffix = ou=Idmap
ldap admin dn = cn=manager,dc=msdpl,dc=com
idmap backend = ldap:ldap://192.168.129.20
idmap uid = 10000-20000
idmap gid = 10000-20000
ldap ssl = no
ldap timeout = 50
acl check permissions = True
template shell = /bin/false
winbind use default domain = Yes
inherit permissions = yes
inherit acls = yes
nt acl support = yes
hide dot files = yes
#######################################Share
Definations########################################
[homes]
comment = Home Directories
valid users = %S
browseable = no
writable = yes
veto files =
/.bash_history/.bash_logout/.bash_profile/.bashrc/.canna/.emacs/.gtkrc/.kde/.vimin
fo/.xemacs/.zshrc/
hide dot files = yes
[printers]
comment = All Printers
path = /var/spool/samba
browseable = no
guest ok = no
writable = no
printable = yes
[projects]
comment = All Projects
path = /projects
browseable = no
guest ok = no
writeable = yes
printable = no
veto files = /lost+found/.Trash-root/*.sh/*.scr/.recycle/
create mode = 2700
force create mode = 0700
force directory mode = 0700
inherit permissions = yes
inherit acls = yes
vfs objects = recycle


[datalib]
comment = DataLib
path = /datalib
browseable = no

writeable = yes
vfs objects = recycle
veto files = lost+found
inherit permissions = yes
inherit acls = yes
veto files = /lost+found/.Trash-root/*.sh/*.scr/.recycle/
##################################################################################

The follwing is the backtrace of the process at runleve 10
#####################################################################################

(gdb) attach 23544
Attaching to process 23544
Reading symbols from /usr/local/samba3c2/sbin/smbd...done.
Using host libthread_db library "/lib/tls/libthread_db.so.1".
Loaded symbols for /usr/local/samba3c2/sbin/smbd
Reading symbols from /usr/lib/libldap-2.2.so.7...done.
Loaded symbols for /usr/lib/libldap-2.2.so.7
Reading symbols from /usr/lib/liblber-2.2.so.7...done.
Loaded symbols for /usr/lib/liblber-2.2.so.7
Reading symbols from /usr/lib/libgssapi_krb5.so.2...done.
Loaded symbols for /usr/lib/libgssapi_krb5.so.2
Reading symbols from /usr/lib/libkrb5.so.3...done.
Loaded symbols for /usr/lib/libkrb5.so.3
Reading symbols from /usr/lib/libk5crypto.so.3...done.
Loaded symbols for /usr/lib/libk5crypto.so.3
Reading symbols from /lib/libcom_err.so.2...done.
Loaded symbols for /lib/libcom_err.so.2
Reading symbols from /lib/libresolv.so.2...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /usr/lib/libcups.so.2...done.
Loaded symbols for /usr/lib/libcups.so.2
Reading symbols from /lib/libssl.so.4...done.
Loaded symbols for /lib/libssl.so.4
Reading symbols from /lib/libcrypto.so.4...done.
Loaded symbols for /lib/libcrypto.so.4
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libpam.so.0...done.
Loaded symbols for /lib/libpam.so.0
Reading symbols from /lib/libattr.so.1...done.
Loaded symbols for /lib/libattr.so.1
Reading symbols from /lib/libacl.so.1...done.
Loaded symbols for /lib/libacl.so.1
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/tls/librt.so.1...done.
Loaded symbols for /lib/tls/librt.so.1
Reading symbols from /usr/lib/libpopt.so.0...done.
Loaded symbols for /usr/lib/libpopt.so.0
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /usr/lib/libsasl2.so.2...done.
Loaded symbols for /usr/lib/libsasl2.so.2
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/tls/libpthread.so.0...done.
[Thread debugging using libthread_db enabled]
[New Thread -1208101184 (LWP 23544)]
Loaded symbols for /lib/tls/libpthread.so.0
Reading symbols from /usr/lib/gconv/UTF-16.so...done.
Loaded symbols for /usr/lib/gconv/UTF-16.so
Reading symbols from /usr/lib/gconv/IBM850.so...done.
Loaded symbols for /usr/lib/gconv/IBM850.so
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /lib/libnss_ldap.so.2...done.
Loaded symbols for /lib/libnss_ldap.so.2
Reading symbols from /usr/local/samba3c2/lib/vfs/recycle.so...done.
Loaded symbols for /usr/local/samba3c2/lib/vfs/recycle.so
0x00cb97a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb) bt
#0 0x00cb97a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x00529d30 in __nanosleep_nocancel () from /lib/tls/libc.so.6
#2 0x00a7bbe7 in yield_cpu () at tdb/spinlock.c:265
#3 0x00a7bdca in __write_lock (rwlock=0xb7cfdfb0) at tdb/spinlock.c:338
#4 0x00a7bf35 in tdb_spinlock (tdb=0x9779a38, list=979, rw_type=1) at
tdb/spinlock.c:388
#5 0x00a77918 in tdb_lock (tdb=0x9779a38, list=979, ltype=1) at
tdb/tdb.c:302
#6 0x00a7b72b in tdb_chainlock (tdb=0x9779a38, key={dptr = 0xba3600 "1\b",
dsize = 16})
at tdb/tdb.c:2030
#7 0x00a0507b in get_share_mode_lock (mem_ctx=0x0, dev=2097, ino=8356202,
servicepath=0x0,
fname=0x0) at locking/locking.c:619
#8 0x00a05334 in get_delete_on_close_flag (dev=2097, inode=8356202,
fname=0xbfe1cd50 "STEPMOT/cd_down_load/memorey") at locking/locking.c:665
#9 0x008d4fc6 in call_trans2qfilepathinfo (conn=0x9783c80, inbuf=0xb7d66008
"",
outbuf=0xb7d45008 "", length=138, bufsize=131072, tran_call=5,
pparams=0xbfe1d258,
total_params=66, ppdata=0xbfe1d254, total_data=0, max_data_bytes=40) at
smbd/trans2.c:2890
#10 0x008dcd67 in reply_trans2 (conn=0x9783c80, inbuf=0xb7d66008 "",
outbuf=0xb7d45008 "",
length=138, bufsize=131072) at smbd/trans2.c:5030
#11 0x008fcc2a in switch_message (type=50, inbuf=0xb7d66008 "",
outbuf=0xb7d45008 "", size=138,
#####################################################################################

Regards
Niranjan