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  1. #1
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    CIFS VFS: Send error in read = -13

    Any ideas what this means? This happens from my FC5 box. My FC4 box does this just fine.

    I get this in /var/log/messages any time that I attempt to read, copy or cat a file on my Windows 2003 server.

    I've mounted the volume with
    mount.cifs //server/share /mountpoint -o username=domain_admin_account

    I can go into /mountpoint and touch a file. I can then run vi and save data into the file. However, when I try to cat the file I get permission denied and then CIFS VFS: Send error in read = -13 in my /var/log/messages. However, from Win2003, or FC4, I can see the contents of the file just fine and I mount with the same username/password.

    I'm stumped.
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  2. #2
    foobar47 Guest
    Did you disable the numeric options in the 2003 server ?

  3. #3
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    I'm not sure what your question is asking? What are the "numeric options" in the 2003 server?
    RHCE and MCSE systems administrator
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  4. #4
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    I have duplicated this problem at work.

    Here is the deal, this appears to happen when the 2003 Server happens to ALSO be a domain controller.

    I'm not yet sure how to fix it, but at least I know the scenario and can make it happen.
    RHCE and MCSE systems administrator
    Registered Linux User #375155 For More Info or to register yourself

    My Linux box is:
    Ubuntu 8.04, Antec Sonata II case with 450-watt PS, AMD 64 X2 4600+ (65 watt), 4GB DDR2 800 RAM, 18X Lite-On DVD burner, Asus M2NPV-VM, Nvidia GeForce 7600GT (256MB), 320GB Western Digital SATA 3.0Gbps, Logitech MX-310, Dell 18" ultrasharp LCD, Microsoft Natural Ergonomic Keyboard 4000 and 2.1 Boston Acoustics sound system..

  5. #5
    foobar47 Guest
    Hmmm, sorry, i can't find the correct word in english...
    Ooops, i think i'd better sleep a little more... it is something like numeric signature which must be disable...

    i use this one and it works great :

    mount -t cifs -o username=windowsuser,workgroup=MYWORKGROUP "\\\\server\\share" /mount/point/

  6. #6
    runlikehell Guest
    Quote Originally Posted by pparks1
    I have duplicated this problem at work.

    Here is the deal, this appears to happen when the 2003 Server happens to ALSO be a domain controller.

    I'm not yet sure how to fix it, but at least I know the scenario and can make it happen.

    Ahh I'm also having this problem. The server is a win2003 small business server acting as a domain controller with active directory stuff running on it.

    Previously until my upgrade to FC5, the following mount in fstab was working fine..
    //10.10.10.90/preview /mnt/preview cifs defaults,uid=rus,gid=users,user=USER,password=PASS WORD,dom=monaco 0 0

    Now, although they mount ok, I can list files and directories, but reading files gives me the dreaded "CIFS VFS: Send error in read = -13"

    I've tried playing with the various sec= options as detailed in the cifs man page, but they don't seem to make any difference.

  7. #7
    foobar47 Guest
    Try with smbfs instead of cifs to see !?

  8. #8
    runlikehell Guest
    mount: unknown filesystem type 'smbfs'

    and there's no kernel module for smbfs either. Looks like it's been completely recplaced by cifs in FC5

  9. #9
    foobar47 Guest
    Arg, yeah, CIFS is the way to go now...

    try this one now :

    sudo mount -t cifs -o user=name,setuids,noperm,uid=500,gid=500 //server/share /mnt/windows-share

    tell me what...

  10. #10
    runlikehell Guest
    Same thing happens I'm afraid! It mounts OK, I can cd in to it, ls lists the files in there.. but doing 'less readme.txt' produces the CIFS error in /var/log/messages

    Just to confirm, this is happening with the latest 2.6.16-1.2080_FC5 aswell as the initial 2.6.15-1.2054_FC5 kernel. I was hoping the kernel upgrade would solve the issue, but it seems not!

    Using Nautilus to access the shares via smb:// urls works fine, but is not ideal because that only works for a sub-set of gnome applications that use gnome-vfs

    I notice there's a few things in /proc/fs/cifs/ - I wonder if something in there needs to be 'tweaked'?

    [root@raikkonen ~]# l /proc/fs/cifs/
    total 0
    -r--r--r-- 1 root root 0 Mar 30 15:03 cifsFYI
    -r--r--r-- 1 root root 0 Mar 30 15:03 DebugData
    -r--r--r-- 1 root root 0 Mar 30 15:03 Experimental
    -r--r--r-- 1 root root 0 Mar 30 15:03 ExtendedSecurity
    -r--r--r-- 1 root root 0 Mar 30 15:03 LinuxExtensionsEnabled
    -r--r--r-- 1 root root 0 Mar 30 15:03 LookupCacheEnabled
    -r--r--r-- 1 root root 0 Mar 30 15:03 MultiuserMount
    -r--r--r-- 1 root root 0 Mar 30 15:03 NTLMV2Enabled
    -r--r--r-- 1 root root 0 Mar 30 15:03 OplockEnabled
    -r--r--r-- 1 root root 0 Mar 30 15:03 PacketSigningEnabled
    -r--r--r-- 1 root root 0 Mar 30 15:03 traceSMB

    Unfortunately I don't know enough about the guts of CIFS

  11. #11
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    This is a problem with 2003 domain controllers and FC5. I filed a Bugzilla report on this in a prior post. Still waiting to hear anything
    http://forums.fedoraforum.org/forum/...ight=2003+cifs


    Personally, I must be able to mount the share using fstab because I have many scripts which backup my network. Until they get this corrected, I can't even consider using FC5.
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  12. #12
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    just an FYI

    kernel 2.6.16-1.2096_FC5 has resolved this problem.
    RHCE and MCSE systems administrator
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    My Linux box is:
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  13. #13
    foobar47 Guest
    Thanks for feedback man

  14. #14
    allene222 Guest
    Quote Originally Posted by pparks1
    just an FYI

    kernel 2.6.16-1.2096_FC5 has resolved this problem.
    I get this message:
    CIFS VFS: Send error in read = -13
    after doing this:
    Packages Installed:
    kernel.i686 2.6.16-1.2122_FC5

    I think the problem is either not solved or was re-introduced.

    What should I do?

  15. #15
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    Try booting to the old kernel (hopefully you kept it around) and see if the problem goes away.

    I haven't had the problem again, but I also exclude kernel updates unless necessary. Right now, I am running on 2.6.16-1.2107
    RHCE and MCSE systems administrator
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