Ubuntu Servers :: Samba Drops Connection When Transferring Large File
Jul 6, 2011
I'm experiencing connection problem when transferring a large file from Windows 7 (Home Premium) to my Ubuntu 11.04. The transfer starts, but after a couple of seconds the connection drops and all the shares are unavailable. I'm also unable to connect to the server over ssh, and the only thing I can do to restore the connection is to reboot the server. The strange part is that this was never a problem a couple of weeks ago, and I've not done anything to the setup on either machines besides installing security updates.
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Feb 3, 2010
I'm setting up a htpc system (Zotac IONITX-F based) based upon a minimal install of ubuntu 9.10, with no GUI other than xbmc. It's connected to my router (d-link dir-615) over a wifi connection configured for static IP (ath9k driver), with the following /etc/network/interfaces:
Code:
auto lo
iface lo inet loopback
# The primary network interface
#auto eth0
[code]....
Network is fine, samba share to the media direction works, until I try to upload a large file to it from my desktop system. Then it downloads a couple of percents at a really nice speed, but then it stalls and the box becomes unpingable (Destination Host Unreachable), even after canceling the transfer, requiring a restart of the network.
Same thing when I scp the file from my desktop system to the htpc, same thing when I ssh into the htpc, and scp the file from there. Occasionally (rarely) the file does pass through, but most of the time the problem repeats itself. Transfer of small text files causes no problems, and the same goes for the fanart downloads done by xbmc. I tried the solution proposed in this thread, and set mtu to 800 in the interfaces file, but the problem persists.
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Nov 12, 2010
sometimes when transferring large files using scp between my desktop running maverick and other servers running Ubuntu, Debian or CentOS, I get the following error message: 77% 258MB 11.3MB/s 00:06 ETAReceived disconnect from xxx.xxx.xxx.xxx: 2: Packet corruptI've found a seemingly related bug report on launchpad here: but the provided "ethtool" fix did not help. I'd be most grateful for any ideas on how to solve this issue. Some more info:Linux lotus 2.6.35-22-generic-pae #35-Ubuntu SMP Sat Oct 16 22:16:51 UTC 2010 i686 GNU/Linuxlspci | grep eth -i00:19.0 Ethernet controller: Intel Corporation 82567LM-3 Gigabit Network Connection (rev 02)
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Apr 7, 2010
In order to get my shares working I first have to connect to the windows shares from the Ubuntu machine. Then I can connect to the Samba shares from the windows machine. If I don't continue to use the shares. It'll drop the connection and I have to unmount the windows shares and start the process over. The wireless network still shows as being connected but I get an error on the windows machine if I try to connect. I've Googled this and it appears to be a Windows problem. I know this is a ubuntu forum but thought I'd ask for any info. I believe that this is also what is giving me shared printer issues as well.
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Mar 11, 2010
I have a Samba file server with one windows & one Ubuntu workstation. The Ubuntu workstation is a Samba print server. The problem is that the XP machine cannot access the printer. If I restart Samba on the print server it works again. There may be a pattern but I havn't figured it out yet.
Here's my file:
[global]
workgroup = voodoonet
netbios name = Bob
name resolve order = bcast host lmhosts wins
server string =
map to guest = Bad User
local master = yes
os level = 33
usershare allow guests = Yes
usershare max shares = 100
usershare owner only = False
printing = cups
printcap name = cups
printcap cache time = 750
cups options = raw
load printers = yes
use client driver = yes
[printers]
comment = All Printers
path = /var/spool/samba
printable = Yes
create mask = 0700
browseable = No
guest ok = Yes
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
read only = yes
guest ok = no
[Documents]
path = /home/bob/Documents
writeable = yes
browseable = yes
guest ok = yes
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Mar 31, 2011
The Linux samba server would be part of the Windows domain.What's the best way to add shares for all of the students, assuming there is 200 students per folder? Is there a way to add a wildcard like $(USER) (that's logged in)//fileserver/ students/classof2011/Bill_Gates? Or would a directory path have to be created for each student?Either way is fine. I'm just curious what the proper protocol is for completing that task.
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Feb 6, 2011
Every time I attempt to transfer over a large file (4 GB) via any protocol, my server restarts. On the rare occasion that it doesn't restart, it spits out a few error messages saying "local_softirq_pending 08" and then promptly freezes. Small files transfer fine.
Relevant information:
Ubuntu server 10.10
Four hard drives in RAID 5 configuration
CPU/HD temperatures are within normal range
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Jul 20, 2010
This problem is not exclusive to Ubuntu, I've experienced it in Windows and OSX as well, but it seems that almost every time I transfer a large number of files (i.e. my music collection) between my desktop computer and laptop via my external hard drive, I end up losing files for no reason. I usually don't notice the files are missing until later on, because I am never informed of any data loss. Now, every time I make a large transfer of files, I just do it two or three times to ensure that I don't lose any files.
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Oct 5, 2010
I want to transfer an arbitrarily large file (say >20GB) between 2 servers. I have several considerations:
Must use port 22 (ssh) because of firewall restrictions
Cannot tax the CPU (production server)
Memory efficiency
Would prefer a checksum check but that could be done manually
Time is not of the essence
Server A and Server B are on the same private network (sharing a switch) and data security is not a concern, Server A and Server B are not on the same network and transfer will be via the public internet so data security is a concern, My first thought was using nice on an scp command with a non-CPU-intensive cypher (blowfish?). But I thought I'll refer to the SU community for recommendations.
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Nov 11, 2010
I'm trying to create an Ubuntu Server file server that will handle large file transfers (up to 50gb) from the LAN with Windows clients. We've been using a Windows server on our LAN on the file transfers will occasionally fail... though the server is used for other services as well.
The files will be up to 50gb. My thoughts are to create a VLAN (or separate physical switch) to ensure maximum bandwidth. Ubuntu server will be 64bit with 4tb of storage in a RAID 5 config.
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Nov 11, 2010
I'm having some trouble uploading large log files to our server using perl. We are required to upload files larger than 2GB (regardless of how infeasible that sounds). I have tried the same thing on two different servers:
Code:
1. Linux 2.6.32-24-generic #39-Ubuntu 10.04 i686 GNU/Linux Server version: Apache/2.2.14 (Ubuntu)
2. Linux 2.6.5-7.244-smp #1 SLES_9 x86_64 x86_64 x86_64 GNU/Linux Server version: Apache/2.0.49 Smaller files upload without issue, however when a file larger than 1048576000 bytes is sent to be uploaded, the browser immediately fails, yielding this:
Code: This web page is not available. The web page at blah might be temporarily down or it may have moved permanently to a new web address. Below is the original error message: Error 101 net::ERR_CONNECTION_RESET): Unknown error. The apache log gives some indication of the file size limit:
Code: Requested content-length of 5954683941 is larger than the configured limit of 1048576000 However, I have looked through the apache config files and can't seem to find where this setting for content-length is. Is there an absolute maximum setting for file uploads in apache? Is it also possible that this is actually caused by a Perl error?
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Feb 25, 2010
I'm unable to download large files from ftp.
The ftp server is: NCFTPD.
My server is:
Version:
istributor ID:Ubuntu
Description:Ubuntu 6.06.2 LTS
Release:6.06
Codename:dapper
Linux morpheus 2.6.15-55-amd64-server #1 SMP Tue Dec 1 18:31:51 UTC 2009 x86_64 GNU/Linux
when I download, it gives an 131 error unknown.
I tried the same file on a 32 b server, same version of all except 32 instead of x64.
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Jun 15, 2010
I am having a bit of a problem with my Ubuntu Server 10.04 install. I think it might be a kernel problem. Basically, what happens is when I copy a large file (a 160GB disk image) to my drive (>60GB) the system consistently crashes after about 60GB of the file is transferred. It doesn't matter if I am sending the file using cifs, or over SSH. Checking syslog (paste dump here), it seems these flush errors always appear shortly before the crash occurs. The destination filesystem is a hardware RAID 10 array with 2TB of space. It is formatted as EXT4.
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Nov 26, 2010
this is my output when I try to compile samba 4.0.0 alpha 7 in Ubuntu using the spec file provided in the samba packages:
bin/mergedobj/samba-util.o: In function `file_lines_parse':
(.text+0x595c): undefined reference to `_talloc_steal'
bin/mergedobj/samba-util.o: In function `data_blob_talloc_named':[code]....
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Aug 9, 2011
I've got a quadcore PC, 2gb ram pc running ubuntu 11.04 with samba set up on a shared folder - the plan is to share files and media between myself and my housemates. However, I do not have the router attached by ethernet, I am connecting to the router (in another room) by a d-link wireless dongle.
I can access the share without real issue from my windows laptop and other computers in the house share I'm part of, and I can happily transfer a text file here and there, but it seems to be anything over 20mb will not go. All the files I am trying to transfer are >1gb and it's driving me mad.
After some decent transfer rates of around 1mb per second it just freezes up. The screen attached to the actual server goes blank and the host becomes unreachable by ping.I'll be happy to provide any command results or anything to get this working. any assistance would be welcome!
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Feb 4, 2010
I was just checking some of the generated logs from Samba.
Code:
Quote:
I've looked over my smb.conf and it doesn't look like I even have any printer sharing enabled.
Quote:
How PC1 was refused a connection when it looks like I don't have any printers being shared throught Samba?
This is just on a home LAN.
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Jan 7, 2011
I'm planning to add 1tb sata disk to my lovely file-server under ubuntu 10.10,what i want is use this disk as additional storage for network user,indows and ubuntu?I mean when my ubuntu server down (worse case) I can easily take out the disk from ubuntu machine and plug in on windows machine
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Feb 3, 2011
We have 2 servers, 1 is the webserver and the other is the Mysql server.
When transfering a 2GB file from the webserver to the Mysql server.
The webserver's connection to the mysql DB server dies completely.
Need to restart the MYSQL process in order for it to come back online.
During this connection downtime, when using phpmyadmin on the mysql server shows no problem running queries etc.
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Jan 8, 2010
I have ubuntu 9.10 server installed, I am connecting with putty over ssh 22. but after a while (about 20-30 mins) the connection drops. and I have to connect again. is there any configuration for that?
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Jan 23, 2010
I got a new low power file server (Atom 330 with ion), but didn't enjoy it since.
I installed Ubuntu server 9.10 64bit.
I randomly experience connection drops. As I'm installing and testing, there are lots of ssh windows open, I transfer much data using scp from my laptop to the server (all connected to wired lan).
Connection drops are as follows: ssh windows terminate with "connection reset by peer", but not always all the ssh windows terminate. For example, I edited a mediatomb config using nano, that stayed open even with scp and all other ssh windows cut.
I also have apache2 installed because I'm running urd (a usenet download tool). It seems that when I start the deamon, connection drops. So I killed apache2 to try out but that didn't solve the problem.
I left ping run all the time, and the server is pinging back all the time, which is really strange as I thought that a connection drop means the whole network interface going down.
When this drop occurs, I have to wait 2 minutes until I can ssh back into the server.
I also installed mediatomb, but it isn't really fun to stream a video to my ps3 as it always hangs after 5 to 10 minutes.
Code:
lspci:
Code:
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Aug 17, 2010
I've had a computer running Ubuntu connected to my TV for a few weeks now, but as of yesterday, I can't get it to keep a connection to the Internet. Everything works well for an hour or so after a reboot, but then no WAN connections work. When this happens, no sites load in Firefox or Chrome, I can't ping Google, I can't SSH to the box from work, and none of the pages I have running on apache load from remote computers. However, all local area connections seem to work fine. SSH from within my LAN takes much longer than usual, but it does still connect.
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May 12, 2011
Something really fuŃked-up is going on with my machine... whenever I try to update my repositories (regardless of if it's by Synaptic, Ubuntu Software Center or terminal via sudo apt-get update), my PC loses connection, and I need to reset my WLAN twice to make it work.It's in a specific part where it happens...
Code:
Ign http://archive.ubuntu.com natty InRelease
Ign http://extras.ubuntu.com natty InRelease
[code]....
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Oct 13, 2010
I recently installed Server 10.10 64-bit. After installation, I set up my config file (/etc/samba/smb.conf), and tried to restart Samba:
Code:
/etc/init.d/samba restart
There was nothing to restart though - the file /etc/init.d/samba wasn't there!
Purged the package and re-installed. Tried reformatting and adding Samba as a pre-installed package. Trying to find the server guide for 10.10, but no dice. Did something change for Samba in 10.10?
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Oct 8, 2010
I am using centOS 5.My internet connection drops at irregular intervals and it restores only after reboot the system.Even if i deactivate and re-activate it using Newtwork cofiguration utility,It shows its active but it cannot open any page.
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Aug 17, 2010
Recently, Putty keeps intermittently freezing and locking me out of the system (i.e. I can't stop the session and I can't re-login via ssh again until I've gone to the machine and pressed "reset").
So far, it mostly occurs when opening a file in VIM, but it does sometimes occur when using tab to auto-fill a file or directory name at the command prompt.
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Oct 18, 2010
Every now and again my internet drops out for no apparent reason. I try dhcpcd -k eth0/dhcpcd eth0 and nothing. I try modprobe -r <driver> modprobe <driver> dhcpcd blah blah and nothing. /etc/rc.d/rc.inet1/2/d restart. Nothing. The only thing that works is rebooting my system. how to reset my connection without rebooting?
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May 1, 2010
I'm having a really strange problem with my wifi connection on my laptop. The ethernet connection works fine and so does the wifi connection - as long as I sit within one meters range from my router! As soon as I take the laptop further away the connection drops. The router is still being found by network-manager and the signal is just below 100%, but when I try to establish a connection it fails.
I'm sitting here on a fresh Ubuntu 10.04 install, and I had exactly the same problem with 9.10. That time I went through a lot of different procedures, and in some strange way the problem was solved. I haven't been that lucky this time though, I've tried reinstalling network-manager, using ndiswrapper, installing the wireless backports package, tried all kinds of drivers.. nothing works.
There shouldn't be any problem with the connection itself; I've had a perfect connection downstairs but now I can't even connect if I stand two metres from the router! Has anyone experienced anything like this and managed to fix it? My wireless card is Atheros AR2413. This is an example from daemon.log
Quote:
Apr 30 00:45:51 petter-laptop NetworkManager: <info> Activation (wlan0) starting connection 'Auto Wester'
Apr 30 00:45:51 petter-laptop NetworkManager: <info> (wlan0): device state change: 3 -> 4 (reason 0)
[Code]...
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May 17, 2010
I have an Acer Aspire One ZG5. 160GB HD, 1GB RAM model. I've done a fresh install and an upgrade of 10.04 and have the same problem both ways. I am able to connect to my wireless connection but it is dropped after about 5 minutes and have to wait about the same time to reconnect. I've had to roll back to 9.10 being that I use the netbook for work and school on a daily basis.
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Jun 5, 2010
I could not find a solution to this problem anywhere. I use a ubuntu server to play (stream) mp3s and movies to other computers on my network. It works most of the time, but sometimes in the middle of a movie or a song it will drop/hiccup--saying it is "not reachable". I am not overtasking the server at all, and merely playing an mp3 that takes up less than 10% of the bandwidth, yet it drops it for a split second.
I have a WRT160N router (DD-WRT of course) with 4 clients connected (2 of which are wired). The ubuntu server is connected via ethernet and all machines have the same issue. It can't be the router because another Windows machine works just fine for streaming these files. I just can't understand how it can lose connection for a second or so. It may just be the file-system or some service that is hiccuping, but I have no idea...
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Jul 21, 2010
I'm having a web server running with ssl version 0.9.8 on Ubuntu 8.0.4. Server is having a valid certificate issued by authorized CA. In the begining client and server able to communicate (beyond handshake) successfully. However, after a couple of days all of the active connections go haywire.
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