[Samba] Strange network file access behavior

[Cary Robinson]

Try the large .zip file first.
I've seen WinXP act strangely when there is a large .zip file in a directory.

Cary

At 03:29 PM 7/13/2007, Jason Baker wrote:

>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>
>
>-----BEGIN GEEK CODE BLOCK-----
>Version: 3.1
>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------
>
>
>
>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>
>>>
>>>-----BEGIN GEEK CODE BLOCK----- Version: 3.1
>>>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 
>>>>>
>>>>>
>>>>>
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>
>--
>No virus found in this incoming message.
>Checked by AVG. Version: 7.5.476 / Virus Database: 269.10.4/898 - 
>Release Date: 7/12/2007 4:08 PM

    Cary Robinson
       IT Manager
[]

Office: 512-864-2750
Fax:    512-864-2751
Cell:    512-844-5551
Email: <mailto:cary at topsolutionsinc.com>cary at topsolutionsinc.com
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No virus found in this outgoing message.
Checked by AVG. 
Version: 7.5.476 / Virus Database: 269.10.4/898 - Release Date: 7/12/2007 4:08 PM