Ubuntu Networking :: File Corruption By Copy From Lucid To CIFS Share
Aug 11, 2010
There are a number of shares on the destination system; for the purposes of this thread I used D$ and F$ (corresponding to those partitions). These shares are mounted permanently via CIFS (entries in fstab) on the source system.Today I copied an ISO image of some 3.5 GB from source (S) to destination (D). md5sum on S gave a different checksum for the source ISO than that calculated by HashCheck Shell Extension for the destination ISO. I know some would argue that I shoud use the same md5sum programm for both images.
To circumvent that I 7zipped the ISO, verified it's integrity and copied that archive from S to D. Verification of the acrchive by the Win version of 7z failed.To see if it's a protocol problem I copied both ISO and archive of ISO to another D this time using sshfs (it's an Ubuntu server). Flawless copies.Then I copied both files to another Win-based server on the same network. Flawless copies.Mystified, I checked the partition's file system integrity (NTFS) where the errors occured. Minor inconsistencies (no errors according to chkdsk). So I copied both files again, once to another partition (D:) of the original D, once to that partition causing the error in the first place (F:).
(D:): archive corrupt, checksum okay
(F:): this time around both okay.
What the hell can I do to nail down the problem?! I don't even know whether it's a problem of the source system or the destination.
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Jun 24, 2010
I'm using cifs to mount windows share.I have created one credentials file and given the path in fstab to mount at boot time. Now i want to encrypt the credentials file and place that in the fstab file.But it is not accepting.. how to use encrypted file to use in fstab,so that normal users can not watch the credentials inside the file.
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Mar 10, 2010
I have a Buffalo Drivestation (model HD-CELU2, 1tb) attached to my network.From my ubuntu desktop I can go to the menu, select "connect to server", put in the ip and share info, and it mounts perfectly.I can open the share and browse eadwrite, but when I try to mount it from a terminal or within fstab, it will still mount, but I cannot see any files that are on the drive. I have about 12gb of data on it, but like I said when I mount it using "mount -t cifs 192.x.x.x/share blah blah blah" I do not see any of the files.If I do a df I can see that the drive has files on it based on the free space available, but if I do an ls nothing shows.
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May 2, 2010
I have a Hitachi SimpleNET adapter (entry-level NAS device) on a Seagate FreeAgent 1TB external HDD (formatted ext3). The NAS device is connected over 100MB/s ethernet to a Netgear Wireless G router. All other devices connect using Wireless G. The NAS runs embedded Linux on an ARM processor and it runs vsftpd and Samba for file transfers.
If I transfer a large file using an FTP client the transfer maxes out at around 2.5MB/s. For my purposes that's good enough, especially considering the Wireless G bottleneck. If I transfer a file from a Windows 7 client (using samba) I get around 2.2MB/s. I know the CIFS protocol has more overhead than FTP and the difference in speed isn't that noticeable.Any combination of Ubuntu and Samba results in me getting less than 1MB/s. I've tried mounting it through Nautilus (GVFS) and /etc/fstab. FTP from this same Ubuntu client gets around 2.5MB/s.
I don't have root access on the SimpleNET to change the smb.conf. I've made a few adjustments to the mount options with no success. how to either speed up 10.04 as a Samba client or mount a folder on an FTP server locally? I've tried both curlftpfs and FUSEFTP. With curlftpfs any write operation results in an I/O error and it crashes intermittently. With FUSEFTP I never got that far and couldn't even browse the folder.
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Feb 10, 2009
Following instructions that I received from the Fedora 10 Guide, I recently edited my etc/fstab file so that I could auto mount my Windows share. It worked the first time, but when I rebooted, I noticed an error saying that Linux could not not unmount the cifs shares. Eventually it did reboot, but now I cannot mount the share at all from fstab. When I run the command #mount -a and then #mount, my share is shown to be mounted although I cannot access it and there is no link to it on the desktop like there was the first time it mounted. I basically want my Windows share to be permanently mounted with read/write permissions. My Distro is Fedora Core 10 64 bit. How can I resolve this issue?
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Jan 12, 2011
Trying to figure out if there is a way to connect to a cifs share, and only being prompted for one password? ie using the following:
sudo mount -t cifs //goanna/neddy -o username=neddy,iocharset=utf8,file_mode=0777,dir_mode=0777 /mnt/neddy
prompts twice for a password (sudo & the share password). Is there anyway to "catch" the sudo password for the connect? (Long shot!
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Aug 17, 2015
There is this bug in the latest version of Ubuntu, which is also Jessie, which is:
Can't copy a file from SMB share to the local file system: Software caused connection abort
The problem, apparently, is that newer versions of Samba hit servers with multiple requests at the same time, and for some reason the Zyxel and Iomega boxes can't handle this. The best solution they've come up with is to modify the smb.conf file on your server to include this setting: "max mux = 1".
Here is the reference material on this bug: [URL] ....
People who develop samba have fixed it in the latest version but neither the ubuntu nor Debian have released the fixed version of nautilus, as of yet. Here, is the reference: [URL] ....
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Mar 12, 2010
I would like to be able to test that a network mounted cifs(samba) share is actually mounted in a script file to do backups. I want to do this so that when my automatic backups run they actually go to the remote location or fail. Currently, if there is a network problem that prevents the network share from mounting, the files simply get copied to the folder (e.g. /media/backupmount) and end up filling up my small local hard drive.
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Jun 11, 2010
Is it possible to copy zipped (my.zip) files from Windows systems to Linux systems and unzip them without any corruption.
I know the command unzip is available, but I want to know if this copying from WIndows to Linux could lead to file corruption.
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Jun 6, 2010
I just made the upgrade to 10.04 over the weekend, and everything seems to be working fine, minus one nagging detail.I have a Mythbuntu setup - a frontend and a backend. In addition to recording television, I have a folder setup on my backend where I can dump movie files to watch on the frontend. The folder is shared in the /etc/fstab via a CIFS share. Within that folder is a symlink to where my torrent folder is located. The issues seems to be how my frontend handles symlinks within the shared folders. If I run "ls -la" in my base CIFS share folder, it lists the symlink folder and says it's owned by root, but if I try and change to that directory - either using "ls" or "cd" - it says Permission Denied. On the backend, I changed ownership of the symlink to the username the CIFS is using to login, but that had no effect. I'm not familiar with how to do any sort of configuration on CIFS, if that's where I'd even need to start.
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May 19, 2011
I have a FreeNAS server running CIFS shares. I just tried out Deja Dup on my home directory and backed it up to my CIFS share. This is about 200gb worth or so, I believe.After it was done, I went to browse into the directory. I've restarted the CIFS service on the server, rebooted the server, and rebooted Ubuntu,I STILL cannot browse my directory. It says:Sorry, could not display all the contents of "jason": Invalid argument.Yet I can SSH into it and do an ls listing and see all of the .tar.gz packages that Deja Dup created. Likewise, I can browse to it just fine in Windows.What is Ubuntu doing that it doesn't like to see these files? It's a huge, huge pain in the rear... How can I fix it?
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Mar 15, 2011
I am trying to image about 30 laptops with WinXP, and I am using Clonezilla and DRBL for the task. We will start migration to Win7 starting Q4, so for now we are still using XP. I used a Clonezilla live USB to capture a standardized image to a CIFS/SAMBA share on the enterprise file server. The file server does not support NFS. To deploy the image, I used Virtualbox to build a VM with Centos 5.5 and then later Ubuntu 10.10. I mounted the CIFS share to /home/partimag but I found that I cannot share this CIFS mount out as NFS so I was unable to deploy the image with the image still residing on the CIFS; I had to copy the image to the VM's local drive.
Now using the DRBL live distribution, which is Debian based, I was able to obtain the image from a CIFS share and then share it out to the clients to be imaged as NFS (I think). I was able to use the DRBL live for some older computers, but since that hasn't been updated in nearly 2 years, I think it's missing some device drivers for my newer machines so it doesn't work on them -- this is why I looked at using CentOS and Ubuntu. To mount the CIFS shares, I'm using the following command:
mount -t cifs -o user@domain //share_ip_addr/share_name/folder /home/mount_point
Do I need to do something different to enable the mounted CIFS share to be shared out as a NFS share so that the clients to be imaged can see the contents from the CIFS share as a NFS share? The below image depicts my setup. The workstation has two NICs. The 10 network is the enterprise network and the 192 network is for DRBL imaging only. DRBL/Clonezilla does PXE boot and leases DHCP for the laptops. The laptops are shielded from the enterprise LAN; I am not doing any kind of NAT on on the server. The Linux VM is built with dual NICs and are set to bridged mode so they appear to be a separate NIC from the VM host on the network even though they going into the same port on the wall. [URL]
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Jul 10, 2010
I have a network share mounted with cifs which does not work as expected. It should automount at boot and dismount at shutdown. It does not automount at boot, but "# mount -a" will mount it in the gui after booting finishes. This I can live with, but at shutdown or reboot, the cifs share hangs for about 30 seconds before dying. My /etc/fstab entry code...
I saw a bug report about the cifs umount issue, but can't find it at the moment. I did notice that it was a very old bug. If I remember to do "# umount /media/data-srv" before rebooting, all is fine, but I seem to constantly forget and then stew as the system hangs for an extra 30-45 seconds. I've tried several things to automate it including shutdown scripts added to /etc/init.d/ and elsewhere, but nothing seems to work. Anyone have this issue and find a work-around?
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Jan 28, 2011
am trying to sync data from Server A to Server B. The destination on Server B is a CIFS share and I need to preserve timestamps, permissions, etc. on all the data that I transfer. During the rsync process, I receive thousands of errors like the one below:
rsync: chown "/LBDCASAN001/JasonHarper/files/1259810304676/2010-12-22-01-00-03/0x22/0xc8/0x43/0x0a" failed: Permission denied (13)
I'm not sure if it's related at all, but my mount point on Server B has the permissions set as: drwxr-xr-x 2 root root when it is unmounted. When I mount the CIFS share, the mount point permissions change to: drwxrws---+ 3 root root
Also, here is the line from my /etc/fstab that mounts the share:
//X.X.X.X/LBXXXXX001 /LBXXXXX001 cifs username=LBXXXXX001,password=XXXXXXX!,uid=0,gid=0 0 0
When I perform the rsync, I'm authenticating to Server B from Server A as root.
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Apr 24, 2010
I've got a Fedora 10 server with a simple read-only samba share.I'm able to mount and browse the share from a Fedora 12 client, but all directories appear as empty--and I can see on the server that they contain many files. This happens whether I browse using smbclient, or mount using mount.cifs.I've got smb/nmb ports enabled on both the client and server. File permissions on the server look right.The server smb.conf setup:
Code:
[global]
security = user
[code]...
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May 28, 2010
When using the following cifs mount command, mount -t smbfs -o username=username,password=password //srv/shr /usr/localfolder/and the cifs share does not exist, localfolder is mounted like d????????? ? ? ? ? ? localfolderafter a number of time , when umounting we get a kern <soft lock>Is there any way to fail the mount if the destination share does not exist, ive had a quick look through man mount but can not see a solution.
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Jul 26, 2011
I'm trying to mount some CIFS shares (NetApp) to my Ubuntu 11.04 desktop (64-bit).I am mounting it as a domain user with admin rights and full control over the share.ter mounting it as root, all the files are owned by root and I can't modify them from my non-root user.Here is how I am mounting the share:
mount -t cifs -o domain=example,username=example-user,password=mypassword //myfiler.example.com/myshare$/mydir /mnt/myshare/
This share is a qtree under a volume with security type set to NTFS. (Although I have also tried security type = Mixed) We don't configure user-level access to shares on the filer, we create directories and lay down permissions on those from the Windows side. (Although I have tried explicitly adding my domain user to the access list for the share)
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May 1, 2010
I upgraded my Karmic OS to Lucid the day after it became available and have been having some troubles - I am having trouble starting the OS. Brief history: I have real troubles with the ATI graphics and spent a while trying (finally successfully) to remove fglrx and associated dependencies. I then rebooted ready to install new drivers. I now get the following error on startup:
CIFS VFS Error connecting to socket - aborting connection
CIFS VFS cifs_mount failed w/return code (-101)
For the last couple of weeks or so, I have noticed CFS errors on shutdown which has meant that I have needed to physically press the off button to turn the machine off, but since I could still operate I left that problem on the back burner "for when I have more time". Don't know if the two problems are related. Anyway, I am currently in the situation where I cannot start Ubuntu at all unless I use the install CD and try the LIVE distro.
My fstab file looks like this:
aufs / aufs rw 0 0
tmpfs /tmp tmpfs nosuid,nodev 0 0
/dev/sda6 swap swap defaults 0 0
(My PC Has a 1 TB drive and a 500 gig drive. The 1 TB drive has dual boot Vista (came preinstalled and I have a couple of games for it - else, yuk) and Linux. The 500 gig drive is a data drive). I'd rather not reinstall from scratch though may have to? I don't know of any way to repair-install the OS - maybe that would be possible too?
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Nov 3, 2010
i switched from sabayon to Fedora13 some days ago, and now i encounter the problem, that some applications (XnView, XnViewMP, PFTrack so far) can't browse cifs network paths.This was working fine while on Sabayon.
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Jul 22, 2009
I've to make a Windows 2000 share on my Server Linux CentOS 5.1 with all the updates installed with yum. I've a directory on a Windows 2000 that contains some images for a catalogue. I have my internet site on CentOS 5.1 with a Apache - Mysql - PHP web server. I have to mount my directory on a share in /mnt/catalogueimages and made a symbolic link from my /var/www/html/mysite/catimages to this samba share.
This is what I do following your guide a this link: [URL]
I have placed in my /etc/fstab this line:
//SERVER/C/Catalogue /mnt/catalogueimages cifs user,username=Administrator,password=,uid=apache,gid=apache 0 0
My Windows 2000 server have no password.
After that I made the symbolic link:
ln -s /mnt/catalogueimages /var/www/html/mysite/catimages
All it's OK.
The problem is that I can't see the images via browser. I have tried also to put some images in the directory /mnt/catalogueimages, deleting the mount point, in order to see if the problem was in apache: the images are visible via browser. Why I don't reach to see the images mounted with samba?
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Jan 26, 2010
We recently moved to a new home and I am trying to get my home file/print server set up again. Thanks to swerdna's excellent website, I got my server box (just upgraded from 11.0 to 11.2) running Samba and serving my shares over the network, and my "client" machines can access them without a problem.However, I'm not having much luck setting up CIFS mounts on my Linux desktop. I have my all-purpose user added to the Samba auth list (via smbpasswd), and configured my client as swerdna's howto's specify, and I can access the files just find. However, when I try to mount the shares with this command:
Code:
mount -t cifs -o username=klein,password=klein //192.168.1.70/sharedmedia /home/zak/SharedMedia/
I get the following error:
[code].....
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Jun 18, 2009
I've been trying for a while mounting a EMC NAS share on linux. As far as I know the NAS share behaves just like a regular windows share, so the mount process should be very similar. On the NAS server, the disc "Disc1" is shared, and I need to mount a sub-subfolder of that share. This is my line in /etc/fstab:
Code:
//windows_box/Disc1$/folder1/subfolder /var/tmp/mount_test cifs defaults,acl,soft,uid=srvadm,gid=adm,umask=0027,file_mode=0600,dir_mode=0700,credentials=/root/cred.txt,sec=ntlmv2 0 0
When mounting the share, this is what happens:
Code:
[root@server1 tmp]# ll
total 8
drwxr-xr-x 2 root root 4096 Jun 18 10:39 mount_test
[code]....
In the console (i.e. bash), the "mount_test" word on the last line has a red background. When I issue "umount mount_test", everything is back to normal.
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Jun 15, 2011
I'm trying to setup a samba server to share data among clients via cifs. As a test, I mounted the samba share on the same machine and tried to access the contents of the directory. The mount command was:mount -t cifs -o username=sthomaso,workgroup=WORKGROUP //server/scratch /mnt/server/scratch..which worked fine after entering the password. Although I can "cd /mnt/server/scratch", when I try to list the contents of the directory with "ls", I get error "ls: reading directory .: Permission denied".
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Apr 29, 2010
We have a homegrown process that runs on a windows box and produces a csv file. We mount the directory these are output to using autofs/cifs and then process them using a program on our linux database servers.
Is there a way from linux, looking at the cifs share, to tell if the target file is currently in use by a process on the windows box? We are having issues where an incomplete file is being processed occasionally.
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Jul 30, 2011
I followed this howto in order to mount CIFS shares on demand. This works great, however, this guide suggests leaving my network passwords unencrypted on the disk. This is a very bad security practice, as the passwords can be easly retrieved by booting the computer using a different OS.
I was looking for a way to secure things up, so I came up with this solution: Instead of storing the passwords plain text on the disk, I store them in a tar file encrypted using GPG. When I boot my system, I open this file to a directory in /dev/shm, and order AutoFS to retrieve the passwords from there.
This does the trick, but I presume this solution is not that secure, since /dev/shm content can be written to the swap partition. Is there any other solution which is a better security practice? Maybe using some sort of keyring service?
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Dec 4, 2015
I try to connect my Debian Jessie to my Windows share
This is what I have done:
-> 1 - create an .smbcredentials file located in my /home directory (with account / password and domain)
-> 2 - implement /etc/fstab with information like that :
//192.168.x.x/Animes/media/Animes cifs uid=toto,dir_mode=0777,file_mode=0777,credentials=/home/.smbcredentials,iocharset=utf800
and when I try to go on my windows share, I have this message:
An error occurred while accessing 'Home', the system responded: mount: only root can mount //192.168.x.x/Audio-Video-01 on /media/Audio-Video-01
I think about one thing, if uid=toto is different in fstab than my current debian account session name, it is possible the problem came because of that?
(fstab, uid=toto and current session titi)
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Nov 18, 2010
I need to mount a windows share on my OpenSUSE 11.3. I get it using the mount.cifs command (by itself or using cifstab), but only root can rw file. I try the uid/gid parameters (also using forceuid) and the file_mode/dir_mode parameters, but I get the same behavior: all files and directory with rwxr-xr-x permissions and root/root (user/group). I read the whole section FILE AND DIRECTORY OWNERSHIP AND PERMISSIONS in man mount.cifs but nothing works.
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Mar 21, 2011
Q: How do I mount a CIFS share so that my user stevej has all rights to it?
Summary: I can mount the share as root.
mount.cifs //10.x.x.x/Data /home/stevej/Synology/Data/ --verbose -o user=stevej
Using Dolphin in Super-User mode, I can copy files and directories from the share to itself with no errors. Using Dolphin in Normal-user mode. I get the failure "Could not change permissions for...". The file is copied, but its owner,timestamp and permissions are wrong. If a subdirectory is involved, the copy aborts.
Using Windows XP I can copy files and directories from the share to itself with no errors.
Testing: If I mount with uid and gid, then my normal user can not access the share.
mount.cifs //10.x.x.x/Data /home/stevej/Synology/Data/ --verbose -o user=stevej uid=stevej gid=users
[code]...
Synology DS211 - There are 2 users on it. One of which is stevej and the other is julie. Rights RWX are applied to the users and the group called users. All files have stevej as the owner and users as the group with RWX Opensuse 11.4 - There are 2 pc's. One is run as stevej. The other pc runs as julie Windows 2000 - Runs as stevej and maps to the share as stevej.
Works as expected Windows XP - Runs as julie and maps the the share as julie. Works as expected Ultimately, I want the shares to automount at boot, or login and give the user full access. I have been to Swerdna's page and done as much as I can, but still no luck.
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Dec 19, 2010
I've been building my digital music collection for some time and used to house it on a local drive with no quality issues. A while back I built myself a file server using ubuntu and mdadm in a raid1 configuration to protect against potential drive failure. I link my iTunes library to the music files via a samba share and everything works great on the surface. I've started to notice that random songs are becoming corrupted with pops clicks and silent pauses. I'll even re-download an album and notice that it's corrupted a few weeks later. Now I'm at a loss to what is causing this issue; I ignored it at first but it seems to be getting worse and more widespread as time goes on.
Do you think this could be caused by mdadm? It reports that all is fine via 'cat /process/mdstat' but I wouldn't know where to look or what to look for if there were syncing issues. The other possibility is that I have iTunes set to keep my music folder organized for me, but I've never heard of it actually corrupting the files it shuffles around. The bottom line is that my library is getting crappier as time goes on and I cannot stand for that!
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May 18, 2011
I'm using ubuntu 11.04, I'm having some problem of ownership while sharing folder/files. to share i change the folder share option:1. Share this folder, then followed by 2.allow others to create and delete files in this folder3. guest access.Now if someone in my local network edit any file and save it, it gets locked. if some one copy their file in this folder the permission is marked as "no group" "no owner". and they get unaccessible to me. i tried doing chown <user> <folder> but it says Operation not permitted. Now how i can possibly share my folder on local network so that they can be edited by others without getting locked down , if they copy files i can able to modify them.
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