Fedora Networking :: 12 Hangs On Transfer Of Large Files?
Dec 9, 2009
I have Fedora 12 (with all the latest patches, including the 2.6.31.6-162 kernel) installed on a new Supermicro SYS-5015A-H 1U Server [Intel Atom 330 (1.6GHz) CPU, Intel 945GC NB, Intel ICH7R SB, 2x Realtek RTL8111C-GR Gigabit Ethernet, Onboard GMA950 video]. This all works great until I try to transfer a large file over the network, then the computer hard locks, forcing a power-off reset.
Some info about my setup:
[root@Epsilon ~]# uname -a
Linux Epsilon 2.6.31.6-162.fc12.i686.PAE #1 SMP Fri Dec 4 00:43:59 EST 2009 i686 i686 i386 GNU/Linux
[root@Epsilon ~]# dmesg | grep r8169
r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[code]....
I'm pretty sure this is an issue with the r8169 driver (what I'm seeing is somewhat reminiscent of the bug reported here). The computer will operate fine for days as a (low volume) web server, and is reasonably stable transferring small files, but as when as I try to transfer a large file (say during a backup to a NAS or a NFS share), the computer will hard lock (no keyboard, mouse, etc.) at some point into the transfer of the file. It doesn't seem to matter how the file is transferred (sftp, rsync to NFS share, etc.).
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Jan 2, 2011
When accessing an NFS mount for a large (200MB+) file transfer, the transfer starts rapidly, then becomes slower and slower until it hangs. On several occasions, it has frozen the client machine. Both client and server are set to default to nfs version 3. Slowdown and hang also occur when connecting to FreeBSD NFS mounts.
Presumably (I hope), there is some sort of configuration for the client that needs to be set. what should be changed in the configuration? This worked out of the box in OpenSUSE 11.0.
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Jan 11, 2010
I just bought a HP 3085dx laptop with an intel 5100 agn wireless card.
The problem: copying a big file over the wireless to a gigabit hardwired to the router computer only gives an average 3.5MB/Second transfer rate. If I do the same copy from my wireless-n macbook pro to the same computer. I get a transfer rate of about 11MB/sec. Why the big difference? I noticed the HP always connects to the 2.4 GHZ band instead of the 5GHZ bands...
On the HPL
[jerry@bigbox ~]$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:246:36:AC4
inet addr:192.168.1.75 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::224:d6ff:fe36:acc4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:639243 errors:0 dropped:0 overruns:0 frame:0
TX packets:1293049 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:53832795 (51.3 MiB) TX bytes:1888619922 (1.7 GiB)
[jerry@bigbox ~]$ iwconfig wlan0
wlan0 IEEE 802.11abgn ESSID:"<censored>"
Mode: Managed Frequency:2.412 GHz
Access Point: 00:24:36:A7:27:A3
Bit Rate=0 kb/s Tx-Power=15 dBm
Retry long limit: 7 RTS thr: off Fragment thr:off
Power Management: off
Link Quality=70/70 Signal level=-8 dBm Noise level=-87 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
I am not getting any errors. I don't know why the bit rate is not known. My airport extreme base station typically reports that the 'rate' for the hp is typically 250~300MBi and about the same for the MacBook Pro. The hp is about 6 inchs away from the base station. Is there anyway to get the rascal to go mo'faster? Is there anyway to get the rascal to use the 5GHZ band.
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Jul 17, 2011
I would like to transfer my music library and movie collection from my Desktop computer running Windows Vista and my laptop running Debian Squeeze. I have the laptop connected via wireless but it's possible to connect the two either directly with a CAT5e cable or through the router. I'm just wondering what the best way to do this would be.
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Apr 21, 2010
how to transfer large files from my laptop to external hard drive. Problem occurs when I'm sending Blu-ray films (4.4GB) to external, gets to 4GB and then comes up with error. Is there any way of breaking it up and then merging when it reaches the hard drive or is there a way of sending it as one whole file.
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Jun 6, 2010
I have a problem that I can't seem to fix.When I try to transfer a large file lets say 700Mb or so my wireless shuts down and i have to restart my ubuntu computer the other computer is vista.ubuntu is on a wusb54gver4 and vista is going through a wrt54g tm running dd-wrt mega.I have tried every thing i know with no luck.
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Oct 20, 2010
I have two servers, one has an empty / and the other has a subdirectory with a large number (4 gig) with many, many files. I need a way to transfer the files en masse from the server with the large number of files to the one that is essentially blank.I don't have space on the used host to simply gzip all the files. I've googled this and see that there may be some combination of tar and/or gzip that will let me do this with some sort of redirection.
I really need and example line of how this can be accomplished. If my explanation seems rather sparse, I can supply more details.
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Jul 21, 2010
I want to transfer files through ftp on my fedora 13 system. when I type ftp in terminal, it shows an error message "command not found" why?
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Mar 15, 2009
My main pc is this Fedora 10 pc. I have two other pcs that run different Linux distros from time to time. What is the basic setup to share and transfer files between the 2 or 3 pcs? They are connected through a 2wire modem/router.
Do I need Samba installed? or is that only if to need to network with a Windows pc?
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Jul 27, 2010
I am dual booting XP and Ubuntu 10.04, but in the future I will be getting a new machine and I will only be running Ubuntu and won't have access to iTunes. Because I have an iPod Touch, I have been trying to find workarounds for syncing everything that iTunes took care of in the past. One problem I have is managing movies. I have looked through various media players/iPod management tools (Amarok, Rhythmbox, gtkpod) and I am using Rhythmbox to sync my music and and attempting to use gtkpod to sync my movies.
gtkpod is able to sync songs (Tested with a few minute test clip) and short *.mp4 files (15mb I know for sure from test). I am unable, however, to get it to sync a movie (~700mb) I am able to drag it onto my iPod in gtkpod, but when I try to save the changes and write the files, it hangs at "Copying Tracks" at 0%. It eventually crashes during the couple times I have tried to wait it out. So this being my situation, my question is, is there a size limit to the *.mp4 files I can sync to my iPod Touch via gtkpod? is there any other tools that you know of that I can sync videos to my iPod with?
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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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Jun 6, 2010
When I try to transfer a large file lets say 700Mb or so my wireless shuts down and i have to restart my ubuntu computer the other computer is vista.ubuntu is on a wusb54gver4 and vista is going through a wrt54g tm running dd-wrt mega.I
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Feb 13, 2011
I need to transfer some a large amount of file from my Linux lap-top to my desktop Windows machine. Can I connect the two computers through a simple crossover cable and simply navigate into the Windows machine and move to files manually or if not, what's the best way to do this? I don't want to burn a bunch of disks.
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May 17, 2011
How does one split a large linux file and transfer to windows external drive ?
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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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Dec 13, 2010
About NFS.
Server:
Client(s):
Code:
I have followed Robbie Workmans' HowTo [url]
Reading and writing works absolutely fine with small files but large files are tediously slow in writing to the server. (rw,no_subtree_check) are options in exported directories.
What is your experience with NFS and how can I speed up large file/folder transfer(write) speeds?
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Feb 13, 2009
I currently have two computers (one windows one linux) connected to each other via a crossover ethernet cable. Now, each computer can see each other and I can ping both ways. Also, I can ssh into the linux box from windows (putty, cygwin) as well as ssh into my windows machine from the linux box. Here's the problem: I can send files from my linux machine to my windows machine with no problems doing this:
scp this_file.txt windows_user@10.10.10.11:/cygdrive/c
however, I can't seem to send from windows (cygwin) to the linux machine. Here is what I see at cygwin x-term prompt:
$ scp that_file.txt jqweezy@10.10.10.10:/home/jqweezy
jqweezy@10.10.10.10's password:
Executing /etc/profile ...
Now, it seems like everything went fine. However when I look in /home/jqweezy that_file.txt is not there.
p.s. Don't know if this helps, but here is some extra info. Linux machine has only one NIC. Windows has two NICs, one NIC is setup for automatic network detection the other is setup for communication with linux machine via crossover cable (see above).
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Aug 1, 2010
I recently built a home media server and decided on Ubuntu 10.04. Everything is running well except when I try to transfer my media collection from other PCs where it's backed up to the new machine. Here's my build and various situations:
Intel D945GSEJT w/ Atom N270 CPU
2GB DDR2 SO-DIMM (this board uses laptop chipset)
External 60W AC adapter in lieu of internal PSU
133x CompactFlash -> IDE adapter for OS installation
2(x) Samsung EcoGreen 5400rpm 1.5TB HDDs formatted for Ext4
Situation 1: Transferring 200+GB of files from an old P4-based system over gigabit LAN. Files transferred at 20MBps (megabytes, so there's no confusion). Took all night but the files got there with no problem. I thought the speed was a little slow, but didn't know what to expect from this new, low-power machine.
Situation 2: Transferring ~500GB of videos from a modern gaming rig (i7, 6GB of RAM, running Windows7, etc etc). These files transfer at 70MBps. I was quite impressed with the speed, but after about 30-45 minutes I came back to find that Ubuntu had hung completely.
I try again. Same thing. Ubuntu hangs after a few minutes of transferring at this speed. It seems completely random. I've taken to transferring a few folders at a time (10GB or so) and so far it has hung once and been fine the other three times.Now, I have my network MTU set from automatic to 9000. Could this cause Ubuntu to hang like this? When I say hang I mean it freezes completely requiring a reboot. The cursor stops blinking in a text field, the mouse is no longer responsive, etc.
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Jul 8, 2010
When I try to copy a file from a shared folder of other laptop, the whole of data passes through the router.This affects the internet bandwidth within the network. Is there a way to access the shared files without necessarily going through the router and also without affecting the internet connectivity.
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Jun 17, 2011
I am using remote boot via PXE boot to an a remote machine. So okay, but when I load the files via NFS, I can not transfer the / lib to my station. I recompiled the kernel, which already influence all NFS packages built in this set as Obrigadao.
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Dec 17, 2010
I would like to transfer files from my PC to my account at a sftp server, and I don't know how to do it.
My PC is running with:
User: User1
Address: 10.0.2.3
My sftp account is:
User: SFTPUser1
Address: sftp-server
I can access the sftp server with the command:
Code:
sftp SFTPUser1@sftp-server
The sftp server doesn't answer to ssh requests.
How can I transfer files to the sftp server?
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Apr 11, 2009
I have two CentOS 5 servers that I'm trying to transfer files between. They're on the same LAN switch, same subnet and everything. So far, everything I've attempted has failed, but scp still exits with a return code of 0. It only displays a line of *** and exits immediately. It's almost as if the file transfers instantly, but no file actually gets copied. Here is the verbose output from scp:
scp -v kickstart.tar ****@192.168.xxx.xxx:/home/****
Executing: program /usr/bin/ssh host 192.168.xxx.xxx, user ****, command scp -v -t /home/****
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
[code]....
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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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Mar 13, 2010
im running fedora 12 and am relatively new to linux..i have been unsuccessful researching this issue.a complex task for an otherwise simple question.perhaps the phrase is not native to linux but the operation is universal.how to transfer filesr move files from one location to another.on windows there was a tweek i found that added an option to the context menu "move to".it would physically move the file.any file to any location.fedora has "send to" but leaves the original and may not be the correct method.fedora also has copy/paste but does that duplicate or merely produce a copy?i want to transfer or move video files both small and large and audio files as well.i want to move them from one hd to another.code is possible but would prefer a more manual solution such as an application or context menu option.perhaps copy/paste would be legit enough for linux and i can see why.but for windows copy/paste and "send to" were considered sub standard methods of file transfer.
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Dec 28, 2010
I have just rewired my LAN using Cat 6 cables. Download- and Upload speeds to my main machine are great :However, it seems my LAN speed is very slow. when I copy large files from my main desktop pc to my mediaplayer, I only reach a speed of 3,7 MB/s in Ubuntu 10.10 using SMB protocol to connect to mediaplayer. I use a Sitecom WL351 Router that works fine as far as I can see. Using my dualboot Windows 7 I can copy the same large files using same setup (same pc to same mediaplayer) I can copy with almost 10 MB/s. I appreciate a little protocol overhead in Ubuntu, but this seems to be a little too much
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Feb 14, 2010
I've been using Ubuntu for about 2 years now, but still have trouble with some of the finer workings of linux. I have a laptop that I use for general computing, and a desktop hooked up to a TV as sort of a remote backup/htpc. A problem I run into is when I transfer files, they get transfered with the owner set as the original computer's account, and I can't do anything until I open a remote viewer and gksudo nautilus to change the permissions of the file. I looked at articles about permissions and uid's, gid's, and umask but can't figure out how to apply it to my situation.
I thought about doing something with groups but am not sure exactly what, and anyway, default group settings only give read access and what I'm really looking for is the ability to manipulate files and folders across the entire /home dir on my desktop from my laptop. Desktop is running 8.04 and laptop is running 9.10. BTW I am currently sharing through smbfs. I read that this has been replaced by cifs, but at the moment I would prefer not the mess with things if I don't need to.
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Oct 30, 2010
I'm trying to automate the transfer and processing of files between two systems to help test and compare a new server installation. The workflow is a bit complex but I'm basically modifying a script on server 'A' to push a file to server 'B' as standard input to another script.
[Code]...
But no luck. I've tried it without the port in the server_args parameter, without the '-l' option; I've tried having the server parameter set to 'tcpd' and the call to '/bin/nc' in the server_args too. But no success. Can anyone point out what I'm doing wrong with the config? PS. I've restarted xinetd and server B is listening on port 1112 and accepting connections - but nothing gets piped into the script on server B.
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Mar 23, 2011
Here's the system:
1 server running regular Ubuntu, 40km above the surface of the earth on a scientific balloon behind an iridium modem (RUDICS) connected to its serial port
1 server on the ground running Ubuntu server
1 intermediate server used for contacting the iridium system from the ground server
I'm not sure if all the above details are completely necessary but I included them for completeness. I would like to be able to log into the balloon server and transfer files in both directions. The procedure for connecting is to telnet to the intermediate server and then to issue some modem commands to call the balloon. The balloon server is set with getty running on the serial port connected to the modem. The way I have figured out to transfer files is to run kermit on the ground server and connect to the balloon server through the intermediate server, then run kermit on the balloon server, and set it as a file server with the server command.
However, there is some sort of timeout or something, and only a few kB of any file gets transferred before the connection is broken. After that it seems like the ground server is trying to get the file from the intermediate server (which has no useful files on it at all). The file transfer screen stays open and it keeps trying and trying to transfer, until I type ^C. I don't know if there is a way of detecting through a kermit command whether the connection is still open or if there is some sort of switch to make the transfer automatically stop once it has stalled.
I have been reading about No Kermit Server (NKS) protocol, which seems to be designed for a system like this where the connection is across a third server. Is this likely to do a better job of keeping the connection open and the file transfer going? How can it be implemented? Is there any kermit command to determine from the ground server whether the connection is actually still open? Is there any way of telling whether the connection goes all the way to the balloon server or whether it ends at the intermediate server? I actually just learned about kermit today.
On a related note, is it possible to have the balloon server running getty on the serial port but still have the port accessible for reading and writing by, say, a python script (which could use the modem to dial down to the ground when it isn't in use)? It doesn't seem to work but I'm wondering if there is a way. Is there a way to temporarily stop getty, then restart it, or is this potentially hazardous? Keep in mind there will be no way to contact it if something goes wrong since it will be 40km above the earth.
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Feb 27, 2009
I'm carrying out a project for my university (CIT in Cork, Ireland) and I'm using CentOS running over WMware. I have a server and a client. The server has no GUI (command line UI) while the client has a UI. I need to install a Simple Forum Machine application and I'm told to FTP the files into the server. I figured out that the best option is to load the files in the client via the GUI and then ftp them in the server. How do I transfer the files from a the client t o the server using FTP? I'm totally new to Linux so the more details the better. Also I'm trying to mount a USB key on the server but have had no luck.
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Jun 6, 2010
After installing slackware 13.1 I start up amarok and when I go in and configure the settings and it starts to scan the folder and it either hangs at 10%, stops responding all together or crashes, the library is about 130 gigs of mp3s. I do not know where to start on this one. Amarok version 2.3.0
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