[Samba] Connection dropped when copying large files to a SambaServer

[Michael Gasch]

hi,

just to tell you that we had the same issue 2 years ago and my colleague 
blamed samba for this. in fact it turned out to be a SCSI HW problem on 
the system. all stress test on the local storage succeeded but when 
samba came into the game it broke the system. that's why we thought it's 
related to samba, which wasn't true...

micha

Michelle Dupuis wrote:
> Not hijacking the thread here...just adding more info as I have the same
> issue.
> 
> I run Samba 3.0.23c (on FC6 64 bit), and am backing up from a Windows box to
> my Samba share.  Sometimes it works great; other times the samba share locks
> up (I need to restart the smb service); and last week samba caused a kernel
> panic.  I can sometimes get 65GB onto the share before it locks up.
> 
> I can backup to the share using NFS (using Windows Services for Unix)
> without issue, but not to Samba.  My relevant smb.conf settings are:
> 
> reset on zero vc = yes
> read raw = yes
> socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
> 
> Strangely, smb logs NO errors!  Trying to browse to the share from any
> windows client times out.  But, after an smb restart everything is fine
> again.
> 
> -MD-
> -----Original Message-----
> From: samba-bounces+support=ocg.ca at lists.samba.org
> [mailto:samba-bounces+support=ocg.ca at lists.samba.org] On Behalf Of Felipe
> Augusto van de Wiel
> Sent: Monday, February 05, 2007 9:05 AM
> To: samba at lists.samba.org
> Subject: Re: [Samba] Connection dropped when copying large files to a
> SambaServer
> 
> -----BEGIN PGP SIGNED MESSAGE-----
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> 
> On 01/30/2007 02:44 PM, mactek - Manuel Teixeira wrote:
>> Hi all
>>  
>> I have a CentOS 4.4
>>  
>> Kernel 2.6.9-11.EL
>> Samba (smbd -V)
>> 3.0.10-1.4E.9
> 
> 	As a side note, you _really_ should install a newer version of
> Samba, the last stable release is 3.0.23d.
> 
> 
>> I've been using this server as a small file server recently i needed 
>> to do a backup (ntbackup to file) and the backup fails randomly, the 
>> largest backup file i managed was about 3GBytes I tried copying large 
>> files and randomly the connection is lost I tried with a ping at the 
>> same time and the replies don't get interrupted so it seems to me it 
>> is a samba issue
>>  
>> I have the latest versions (except the kernel) or so the updater tells 
>> me
> 
> 	If you are talking about samba then, no, definetely you don't have
> the latest version. Could you please post your smb.conf so the list can take
> a look at it?
> 
> 	Good tips would include to check the oplocks and the socket options.
> 
> 
>> thanks all
>> Manuel Teixeira
> 
> 	Kind regards,
> 
> - --
> Felipe Augusto van de Wiel <felipe at paranacidade.org.br> Coordenadoria de
> Tecnologia da Informação (CTI) - SEDU/PARANACIDADE
> http://www.paranacidade.org.br/           Phone: (+55 41 3350 3300)
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