[Samba] samba-3.6.0-server frequent crashes

luxInteg lux-integ at btconnect.com
Wed Jan 11 10:28:59 MST 2012


I have a samba server deployed.
The machine has these:
cpu:         amd64  -4 cores
motherboard :GA-990XA-UD3 with 6 sata ports and 
StarTech 2 Port SATA 6Gbps PCIe SATA Card
memory:      16GBytes
disks:        raid 10 (6 disks)
os:            cblfs/linux kernel-3.1.5 pure 64bit and  samba-3.6.0

The  machine in deployed  as a data-storage-device    for  windows7-based  
machines doing  3d graphics rendering using 
3d-StudioMax.  There are 8 client machines  with plans to expand this to ~20.  
The rendering machins do frequent writes and reads to the samba server  which 
also runs linux software raid  (RAID10).    The smb.conf has these:


    workgroup = WORKGROUP      
    netbios name = WHATEVER  
    server string = Samba %v on (%L)
    encrypt passwords = True
    security = user
    smb passwd file = /etc/smbpasswd
    log file = /var/log/sambaUSER-log.%m      
    socket options = IPTOS_LOWDELAY TCP_NODELAY

    hosts allow = 192.168.0.   127.
    host deny =
    interfaces = eth* lo
    bind interfaces only = yes

    dos charset = cp850
    unix charset = ISO-8859-1   
    load printers = yes
    max log size = 50    
    local master = yes
    printing = cups
    guest account = guest
    os level = 99
    dns proxy = no 
    wins support = yes
#    hosts allow =
#    hosts deny =

    comment = Home Directories 
    valid users = %S 
    read only = no 
    browseable = no 

    comment = All Printers
    path = /var/spool/samba
    browseable = yes
    guest ok =  yes
    printable = yes
    browseable = yes
    writable = no
    create mask = 0700
    public = yes

there is no firewall yet

It is a new setup and the server is crashing daily. We do not know the  cause 
of the crashes  but here are some  unusual ways  the server us currently used:

--a)  because of work pressures 8 users are logged in with the same name  to 
write to a publically accessible share.  Could is be the cause of the crashes?
--b)  Could there be a mismatch of sata types as the startech sata card  
though  rated as the same 6Gbps transfer speed as motherbard-integrated raid , 
is a different asic AND IF SO could this be causing the problems?
--c)Are there settings in smb.conf which  can increase the   data-transferred 
rate  vin the eternet  ( bonding NIC's for example)  and if so how so.

Advice would be much appreciated.


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