Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Samuel Sieb]

On 07/09/2016 02:24 PM, Jon LaBadie wrote:

BTW On my system /etc/mtab -> /proc/self/mounts despite
what the manpage says about pointing to /proc/mounts.
It is "not wrong" however, my /proc/mounts also points
to /proc/self/mounts.

This is because mounts are namespaced, so different processes can see a 
different set of mounts.

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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Ranjan Maitra]

On Sat, 9 Jul 2016 17:24:40 -0400 Jon LaBadie  wrote:

> On Sat, Jul 09, 2016 at 02:21:05PM -0500, Ranjan Maitra wrote:
> > Hi Jon,
> > 
> > On Sat, 9 Jul 2016 13:26:48 -0400 Jon LaBadie  wrote:
> > 
> > > On Sat, Jul 09, 2016 at 09:25:49AM -0500, Ranjan Maitra wrote:
> > > > I seem to have perhaps unwittingly sort of solved this problem:
> > > > 
> ...
> > > > 
> > > > I still get the warning, but now I am able to read and write to it.
> > > > (The only change I did from what I was doing previously is that I
> > > > explicitly set my mode to be -m 755 while mkdir-ing /mnt/box.)
> > > > 
> > > > I certainly would like the warning to go away, so any suggestions
> > > > to that effect would be appreciated!
> > > > 
> > > 
> > > Is /etc/mtab a file or a symlink to /proc/mounts?  The mount
> > > manpage says it should be the link due to userspace problems.
> > > 
> > > Alrernatively, add 2> /dev/null   or use --no-mtab.
> > > 
> > 
> > I tried -n for --no-mtab, but there was no difference.
> > Note that the --no-mtab option was strangely not recognized. 
> > 
> > Many thanks,
> > Ranjan
> > 
> 
> What about /etc/mtab.  Is it a file or a link?
> 
> BTW On my system /etc/mtab -> /proc/self/mounts despite
> what the manpage says about pointing to /proc/mounts.
> It is "not wrong" however, my /proc/mounts also points
> to /proc/self/mounts.

Yes, indeed. The same is true for me:

lrwxrwxrwx. 1 root root 19 Feb 13 15:14 /etc/mtab -> ../proc/self/mounts

Thanks,
Ranjan


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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Jon LaBadie]

On Sat, Jul 09, 2016 at 02:21:05PM -0500, Ranjan Maitra wrote:
> Hi Jon,
> 
> On Sat, 9 Jul 2016 13:26:48 -0400 Jon LaBadie  wrote:
> 
> > On Sat, Jul 09, 2016 at 09:25:49AM -0500, Ranjan Maitra wrote:
> > > I seem to have perhaps unwittingly sort of solved this problem:
> > > 
...
> > > 
> > > I still get the warning, but now I am able to read and write to it.
> > > (The only change I did from what I was doing previously is that I
> > > explicitly set my mode to be -m 755 while mkdir-ing /mnt/box.)
> > > 
> > > I certainly would like the warning to go away, so any suggestions
> > > to that effect would be appreciated!
> > > 
> > 
> > Is /etc/mtab a file or a symlink to /proc/mounts?  The mount
> > manpage says it should be the link due to userspace problems.
> > 
> > Alrernatively, add 2> /dev/null   or use --no-mtab.
> > 
> 
> I tried -n for --no-mtab, but there was no difference.
> Note that the --no-mtab option was strangely not recognized. 
> 
> Many thanks,
> Ranjan
> 

What about /etc/mtab.  Is it a file or a link?

BTW On my system /etc/mtab -> /proc/self/mounts despite
what the manpage says about pointing to /proc/mounts.
It is "not wrong" however, my /proc/mounts also points
to /proc/self/mounts.

Jon
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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Ranjan Maitra]

On Sat, 9 Jul 2016 13:01:45 -0700 Joe Zeff  wrote:

> On 07/09/2016 12:21 PM, Ranjan Maitra wrote:
> > I tried -n for --no-mtab, but there was no difference. Note that the 
> > --no-mtab option was strangely not recognized.
> 
> Was there an error message about an unrecognized option or was it simply 
> ignored?

Sorry, with "-n" there was no error message, only the same warning about not 
writing to mtab as before.

With "--no-mtab" I got: Unknown option no-mtab.

Which contradicts the mount page, but then it is not an option with mount.davfs.

Many thanks,
Ranjan


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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Joe Zeff]

On 07/09/2016 12:21 PM, Ranjan Maitra wrote:

I tried -n for --no-mtab, but there was no difference. Note that the --no-mtab 
option was strangely not recognized.


Was there an error message about an unrecognized option or was it simply 
ignored?

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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Ranjan Maitra]

Hi Jon,

On Sat, 9 Jul 2016 13:26:48 -0400 Jon LaBadie  wrote:

> On Sat, Jul 09, 2016 at 09:25:49AM -0500, Ranjan Maitra wrote:
> > I seem to have perhaps unwittingly sort of solved this problem:
> > 
> > I have done the following:
> > 
> > 1. sudo mkdir -m 755 /mnt/box
> > 
> > 2. then set: 
> > 
> > use_locks 0
> > 
> > in:
> > 
> > /etc/davfs2/davfs2.conf
> > 
> > 
> > 3. sudo mount -t davfs https://dav.box.com/dav /mnt/box -o 
> > rw,user,noauto,uid=USER,file_mode=600,dir_mode=700
> > 
> > Please enter the username to authenticate with server
> > https://dav.box.com/dav or hit enter for none.
> >   Username: USERNAME
> > Please enter the password to authenticate user USERNAME with server
> > https://dav.box.com/dav or hit enter for none.
> >   Password:  
> > /sbin/mount.davfs: Warning: can't write entry into mtab, but will mount the 
> > file system anyway
> > 
> > I still get the warning, but now I am able to read and write to it. (The 
> > only change I did from what I was doing previously is that I explicitly set 
> > my mode to be -m 755 while mkdir-ing /mnt/box.)
> > 
> > I certainly would like the warning to go away, so any suggestions to that 
> > effect would be appreciated!
> > 
> 
> Is /etc/mtab a file or a symlink to /proc/mounts?  The mount
> manpage says it should be the link due to userspace problems.
> 
> Alrernatively, add 2> /dev/null   or use --no-mtab.
> 

I tried -n for --no-mtab, but there was no difference. Note that the --no-mtab 
option was strangely not recognized. 

Many thanks,
Ranjan


> jon
> -- 
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Re: SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Jon LaBadie]

On Sat, Jul 09, 2016 at 09:25:49AM -0500, Ranjan Maitra wrote:
> I seem to have perhaps unwittingly sort of solved this problem:
> 
> I have done the following:
> 
> 1. sudo mkdir -m 755 /mnt/box
> 
> 2. then set: 
> 
> use_locks 0
> 
> in:
> 
> /etc/davfs2/davfs2.conf
> 
> 
> 3. sudo mount -t davfs https://dav.box.com/dav /mnt/box -o 
> rw,user,noauto,uid=USER,file_mode=600,dir_mode=700
> 
> Please enter the username to authenticate with server
> https://dav.box.com/dav or hit enter for none.
>   Username: USERNAME
> Please enter the password to authenticate user USERNAME with server
> https://dav.box.com/dav or hit enter for none.
>   Password:  
> /sbin/mount.davfs: Warning: can't write entry into mtab, but will mount the 
> file system anyway
> 
> I still get the warning, but now I am able to read and write to it. (The only 
> change I did from what I was doing previously is that I explicitly set my 
> mode to be -m 755 while mkdir-ing /mnt/box.)
> 
> I certainly would like the warning to go away, so any suggestions to that 
> effect would be appreciated!
> 

Is /etc/mtab a file or a symlink to /proc/mounts?  The mount
manpage says it should be the link due to userspace problems.

Alrernatively, add 2> /dev/null   or use --no-mtab.

jon
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SOLVED (?): Re: mounting davfs2 on Fedora 24 (can't mount with rw access for user)

[Ranjan Maitra]

I seem to have perhaps unwittingly sort of solved this problem:

I have done the following:

1. sudo mkdir -m 755 /mnt/box

2. then set: 

use_locks 0

in:

/etc/davfs2/davfs2.conf


3. sudo mount -t davfs https://dav.box.com/dav /mnt/box -o 
rw,user,noauto,uid=USER,file_mode=600,dir_mode=700

Please enter the username to authenticate with server
https://dav.box.com/dav or hit enter for none.
  Username: USERNAME
Please enter the password to authenticate user USERNAME with server
https://dav.box.com/dav or hit enter for none.
  Password:  
/sbin/mount.davfs: Warning: can't write entry into mtab, but will mount the 
file system anyway

I still get the warning, but now I am able to read and write to it. (The only 
change I did from what I was doing previously is that I explicitly set my mode 
to be -m 755 while mkdir-ing /mnt/box.)

I certainly would like the warning to go away, so any suggestions to that 
effect would be appreciated!


Many thanks and best wishes,
Ranjan



On Sat, 9 Jul 2016 00:00:00 -0500 Ranjan Maitra  
wrote:

> Hi,
> 
> I am trying to mount a Box.com share using Fedora 24. I install davfs2 using 
> dnf and try the following:
> 
> sudo ./mount-box.sh
> 
> where mount-box.sh contains the following:
> 
> mount -t davfs https://dav.box.com/dav /mnt/box -o 
> rw,user,noauto,uid=USER,file_mode=600,dir_mode=700
> 
> (In the above USER is my user on my local machine.)
> 
> I then try out the following:
> 
> $ sudo ./mount-box.sh 
> Please enter the username to authenticate with server
> https://dav.box.com/dav or hit enter for none.
>   Username: USERNAME
> Please enter the password to authenticate user USERNAME with server
> https://dav.box.com/dav or hit enter for none.
>   Password:  
> /sbin/mount.davfs: Warning: can't write entry into mtab, but will mount the 
> file system anyway
> 
> 
> Thus, I am able to mount it anyway, however, as user, I do not have any read 
> or write access. I can not even see the directory as a mortal user. Root of 
> course, has full access. Btw, df has it listed:
> 
> 
> https://dav.box.com/dav fuse  910T   12K  910T   1% /mnt/box
> 
> 
> So, my question is: how do I mount such that I get read-write access as a 
> mortal user?
> 
> Thanks very much for your time and help in answering this question!
> 
> Best wishes,
> Ranjan
> 
> 
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