GNU bug report logs - #7638
question about make link issue

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Yixuan Huang <yixuan178 <at> gmail.com>
To: bug-coreutils <at> gnu.org
Subject: question about make link issue
Date: Tue, 14 Dec 2010 22:11:10 +0800

Hello,
When I try to make link on partition which mount from windwos through
cifs. It will be prompt like:
ln: creating symbolic link `aa.lnk': Operation not supported

Do we have any work around method to get it work if I want to make link on it?


Thanks,
yixuan

Message #8 received at 7638 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: Yixuan Huang <yixuan178 <at> gmail.com>
Cc: 7638 <at> debbugs.gnu.org
Subject: Re: bug#7638: question about make link issue
Date: Tue, 14 Dec 2010 08:05:14 -0700

[Message part 1 (text/plain, inline)]

On 12/14/2010 07:11 AM, Yixuan Huang wrote:
> Hello,
> When I try to make link on partition which mount from windwos through
> cifs. It will be prompt like:
> ln: creating symbolic link `aa.lnk': Operation not supported
> 
> Do we have any work around method to get it work if I want to make link on it?

Thanks for the report; however, it is lacking a bit in details.

What machine are you running 'ln' on - Windows or a Unix-like system?
And which system is hosting the cifs drive that your local machine is
trying to access?  Also, if you are using ln on windows, where did you
get it?  If it is from cygwin, there have been some recent improvements
to make cygwin try to use native symlinks rather than windows .lnk files
on remote drives that have an appropriate extension, although that may
only be samba rather than cifs.  If it is from mingw, there's no symlink
support whatsoever (since native windows symlink support was a
relatively recent addition, and is incompatible with POSIX semantics for
symlinks).  You may be better off taking your issue to the distro where
you got your copy of ln, since we probably won't be able to help you
much here.

-- 
Eric Blake   eblake <at> redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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Message #11 received at 7638 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: Yixuan Huang <yixuan178 <at> gmail.com>, 7638 <at> debbugs.gnu.org
Subject: Re: bug#7638: question about make link issue
Date: Wed, 15 Dec 2010 07:50:48 -0700

[Message part 1 (text/plain, inline)]

[please keep the list in the loop]

On 12/14/2010 10:09 PM, Yixuan Huang wrote:
> Dear Eric,
> Thanks for your response.
> I ran ln on sles11 x64, and mount windos shared folder through mount -t cifs.
> My scripts will do ln -s xx xx.so, so it will report error and said like:
> tar: pegasus/lib/libpegcommon.so: Cannot create symlink to
> `libpegcommon.so.1': Operation not supported

Thanks for the additional information.  It sounds like you are running
into the issue on the Linux side of things, where you are locating files
on a cifs mount hosted natively by Windows.  Remember, Windows has very
poor symlink support, and cifs is accurately reporting that it cannot
create a symlink because the underlying file system on the native
Windows side can't represent symlinks.  This is not a bug in ln, but a
fundamental limitation of your choice of file system.

-- 
Eric Blake   eblake <at> redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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Message #14 received at 7638 <at> debbugs.gnu.org (full text, mbox):

From: Jim Meyering <jim <at> meyering.net>
To: Eric Blake <eblake <at> redhat.com>
Cc: 7638 <at> debbugs.gnu.org, Yixuan Huang <yixuan178 <at> gmail.com>
Subject: Re: bug#7638: question about make link issue
Date: Sun, 13 Nov 2011 12:57:23 +0100

tags 7638 notabug
close 7638
thanks

Eric Blake wrote:
> [please keep the list in the loop]
>
> On 12/14/2010 10:09 PM, Yixuan Huang wrote:
>> Dear Eric,
>> Thanks for your response.
>> I ran ln on sles11 x64, and mount windos shared folder through mount -t cifs.
>> My scripts will do ln -s xx xx.so, so it will report error and said like:
>> tar: pegasus/lib/libpegcommon.so: Cannot create symlink to
>> `libpegcommon.so.1': Operation not supported
>
> Thanks for the additional information.  It sounds like you are running
> into the issue on the Linux side of things, where you are locating files
> on a cifs mount hosted natively by Windows.  Remember, Windows has very
> poor symlink support, and cifs is accurately reporting that it cannot
> create a symlink because the underlying file system on the native
> Windows side can't represent symlinks.  This is not a bug in ln, but a
> fundamental limitation of your choice of file system.

Closing as "notabug".

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