[Samba] Strange network file access behavior

[Jason Baker]

There are mainly .EXE files, windows software. This is where the IT 
department keeps most of the programs we need to install on other 
machines. There is also a fairly large .ZIP file located in this 
directory. I've renamed the share IT, and moved the contents out of the 
directory, created a new directory, now I'm going to start adding files 
back in one at a time and see if I can repeat the problem.

*Jason Baker
*/IT Coordinator/


*Glastender Inc.*
5400 North Michigan Road
Saginaw, Michigan 48604 USA
800.748.0423
Phone: 989.752.4275 ext. 228
Fax: 989.752.4444
www.glastender.com <http://www.glastender.com>

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Herb Lewis wrote:
> is there anything strange about the number of files in that dir compared
> to the others, or strange naming (mixed case)?
>
> Jason Baker wrote:
>> I just tried what you suggested. I shut down all instances of AVG on 
>> the client and it is still screeching to a halt. I've got 57% CPU and 
>> 68% Network Utilization and the browse window will eventually show 
>> (NOT RESPONDING). I have ran benchmark tests on the network, and 
>> everything is fine. It only happens on this share. I can zip through 
>> all other shares on the network, even directories full of JPG's with 
>> thumbnail previews, but once I get into that /information_systems/ 
>> share, everything slows to a crawl. I wondered if it was maybe the 
>> share name, maybe the underscore is a bad idea. I also thought maybe 
>> its a file that is causing the issue. Maybe I should one by one start 
>> moving files out of that share and see how it affects it.
>>
>> *Jason Baker
>> */IT Coordinator/
>>
>>
>> *Glastender Inc.*
>> 5400 North Michigan Road
>> Saginaw, Michigan 48604 USA
>> 800.748.0423
>> Phone: 989.752.4275 ext. 228
>> Fax: 989.752.4444
>> www.glastender.com <http://www.glastender.com>
>>
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>> GIT$ d- s: a C++$ LU+++$ P+ L++>L++++ !E--- W+++ N o? K?
>> w !O M !V PS PE++ Y? PGP- t 5? X+ R+ tv+ b- DI-- D++ G e+ h--- r+++ y+++
>> ------END GEEK CODE BLOCK------
>>
>>
>>
>> Ian McDonald wrote:
>>
>>> What happens if you turn off the anti-virus on the client machine?
>>>
>>> Jason Baker wrote:
>>>
>>>> I have a Samba PDC and a file server (domain member). They are both 
>>>> running CentOS 4, with Samba3-3.0.24-30 and LDAP 2.3 (on PDC). 
>>>> Domain authentication seems to be running fine and file access on 
>>>> the file server works also. I have one share on the file server 
>>>> that gives me trouble. Whenever I access files from this one 
>>>> directory, the network seems to lock up for close to a minute. I 
>>>> get 64% or more network utilization on the client PC, no packets 
>>>> seem to be moving. If I run TOP on the file server, I see that the 
>>>> top process is the SMBD command from the user who is accessing the 
>>>> directory in question. It shows about 16% or more CPU utilization 
>>>> on the server and the process will stay there for close to a 
>>>> minute. Also, during this "hang time" the PC client is pretty much 
>>>> frozen, I cannot minimize the browse window or bring up task 
>>>> manager. After about a minute or so, suddenly it will come back to 
>>>> life and I can access the file, or run the executable that I am 
>>>> trying to access from that directory. Any other directory seems to 
>>>> work fine. I don't no have any other slow-downs. See conf file below:
>>>>
>>>> SMB Conf for PDC:
>>>> [global]
>>>> unix charset = LOCALE
>>>> workgroup = mynet
>>>> netbios name = aster
>>>> server string = Domain Controller running %v
>>>> interfaces = eth1, lo
>>>> bind interfaces only = yes
>>>> os level = 255
>>>> preferred master = yes
>>>> local master = yes
>>>> domain master = yes
>>>> security = user
>>>> time server = yes
>>>> username map = /etc/samba/smbusers
>>>> wins support = yes
>>>> encrypt passwords = yes
>>>> pam password change = yes
>>>> name resolve order = wins bcast hosts
>>>> winbind nested groups = no
>>>> passdb backend = ldapsam:"ldap://myhost"
>>>> ldap passwd sync = Yes
>>>> ldap suffix = dc=mydomain,dc=com
>>>> ldap admin dn = cn=Manager,dc=mydomain,dc=com
>>>> ldap ssl = no
>>>> ldap group suffix = ou=Groups
>>>> ldap user suffix = ou=People
>>>> ldap machine suffix = ou=People
>>>> ldap idmap suffix = ou=Idmap
>>>> idmap backend = ldap://myhost
>>>> idmap uid = 10000-20000
>>>> idmap gid = 10000-20000
>>>> map acl inherit = yes
>>>> add user script = /etc/smbldap-tools/smbldap-useradd -m "%u"
>>>> #delete user script = /etc/smbldap-tools/smbldap-userdel "%u"
>>>> add machine script = /etc/smbldap-tools/smbldap-useradd -w "%u"
>>>> add group script = /etc/smbldap-tools/smbldap-groupadd -p "%g"
>>>> add user to group script = /etc/smbldap-tools/smbldap-groupmod -m 
>>>> "%u" "%g"
>>>> delete user from group script = /etc/smbldap-tools/smbldap-groupmod 
>>>> -x "%u" "%g"
>>>> set primary group script = /etc/smbldap-tools/smbldap-usermod -g 
>>>> "%g" "%u"
>>>> domain logons = yes
>>>> log file = /var/log/samba/log.%m
>>>> log level = 1
>>>> syslog = 0
>>>> max log size = 50
>>>> #smb ports = 139 445
>>>> smb ports = 139
>>>> hosts allow = 127.0.0.1 192.168.0.0/255.255.255.0
>>>> # User profiles and home directories
>>>> logon drive = U:
>>>> logon path = \\%L\profiles\%U
>>>> logon script = %U.bat
>>>> large readwrite = no
>>>> read raw = no
>>>> write raw = no
>>>> printcap name = /etc/printcap
>>>> load printers = no
>>>> printing =
>>>> template shell = /bin/false
>>>> winbind use default domain = no
>>>>
>>>> <cut>
>>>>
>>>> SMB Conf for file server:
>>>>
>>>> [global]
>>>> unix charset = LOCALE
>>>> workgroup = mynet
>>>> server string = File Server
>>>> security = domain
>>>> username map = /etc/samba/smbusers
>>>> log level = 1
>>>> syslog = 0
>>>> log file = /var/log/samba/%m.log
>>>> max log size = 50
>>>> smb ports = 139
>>>> name resolve order = wins bcast hosts
>>>> wins server = 192.168.0.1
>>>> ldap suffix = dc=mydomain,dc=com
>>>> ldap machine suffix = ou=People
>>>> ldap user suffix = ou=People
>>>> ldap group suffix = ou=Groups
>>>> ldap idmap suffix = ou=Idmap
>>>> ldap admin dn = cn=Manager,dc=mydomain,dc=com
>>>> idmap backend = ldap:ldap://myhost.mydomain.com
>>>> idmap uid = 10000-20000
>>>> idmap gid = 10000-20000
>>>> winbind trusted domains only = yes
>>>> password server = 192.168.0.1
>>>> template shell = /bin/false
>>>> domain master = no
>>>> local master = no
>>>> os level = 0
>>>> preferred master = no
>>>> winbind use default domain = no
>>>> veto oplock files = /*.mbd/
>>>> large readwrite = no
>>>> read raw = no
>>>> write raw = no printcap name = /etc/printcap
>>>> load printers = no
>>>> printing =
>>>>
>>>> ####### Shares########
>>>>
>>>> [information_systems]
>>>> comment = Infomation Systems
>>>> valid users = @is
>>>> path = /home/shares/infosys
>>>> read only = no
>>>> browseable = yes
>>>> directory mask = 2770
>>>> create mask = 2770
>>>> force group = is
>>>> vfs objects = recycle
>>>> recycle:repository = recycle_bin
>>>> recycle:versions = no
>>>> recycle:touch_mtime = yes
>>>> recycle:keeptree = yes
>>>> recycle:exclude = 
>>>> ?~$*,~$*,*.tmp,*.temp,*.TMP,*.cache,*Temp$$$.html,*.lnk,*.idlk,*.ldb,*.db,*.dwl,*.bak 
>>>>
>>>>
>>>>
>>>>