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Full Discussion: Help with autos and mount bind
Homework and Emergencies Emergency UNIX and Linux Support Help with autos and mount bind Post 302919391 by maverick_here on Wednesday 1st of October 2014 01:44:29 AM
Old 10-01-2014
RedHat Help with autos and mount bind
I have a sftp server running on Centos 5.10. It servers as upload/download interface for three users who basically are chrooted to three different locations.
Code:
User A -- >  /home/REGIONA/

User B -- > /home/REGIONB/

User C -- > /home/REGIONC/

The users run certain application procedures on app servers and on the app servers the code uploads data to the sftp server, there are three app servers for three users

Say
Code:
APP server A

APP server B

App server C

I have setup the autofs mounts on the Apps servers, where the application code upon completion will go to the mount point and dump the data


example


Code:
/sftp/REGIONA/upload   --> from APP server A

/sftp/REGIONB/upload   --> from APP server B

/sftp/REGIONC/upload  --> from APP server C

Everything works fine.


Now coming to the issue, I have a requirement of making the "UPLOAD" region common across all the three app servers so what i did was


mkdir /opt/upload

Code:
mount -o bind,rw /opt/upload /home/REGIONA/upload

mount -o bind,rw /opt/upload /home/REGIONB/upload

mount -o bind,rw /opt/upload /home/REGIONC/upload

Now, this works OK if i upload data from filezilla/winscp


However from the App servers which do a autofs mount of the remote ( sftp ) servers filesystems , they are not recognizing upload to be a bound mount.When I upload data
programmatically from the app servers the data si not visible


for example

From APP server A I run the script / application code

I does not show up on /home/REGIONA/upload

and when I umount /home/REGIONA/upload, it shows up.


I figure its an issue with autofs recognizing an underlying mount binded sub directory on the remote filesystem.

Any ideas ?
 

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LEARN ABOUT DEBIAN

dput

dput(1) 						      General Commands Manual							   dput(1)

NAME

       dput - package upload tool for Debian

SYNTAX

       dput [options] [host] package.changes ...

DESCRIPTION

       This  is  a  tool  for uploading Debian packages into the archive. You may specify to which host it should upload the file by passing it an
       host argument. If omitted, dput uses the host specified by default_host (or, historically default_host_non-us) configuration option.   Also
       you have to pass the program one or more name of package.changes files and then they will be sequentially uploaded.

       This  program  will  then  upload  the  package for you into the archive, using a selected upload method. Currently dput supports ftp, scp,
       rsync, http, https, and local. The method scripts have been split from the main script  so  it  is  easy  to  add  new  methods.   Look	in
       /usr/share/dput/ for examples.

       Should  something  go  wrong  with your upload to destinations using the Debian upload queue daemon (e.g. ftp-master), you can remove files
       from the upload queue with dcut(1).

OPTIONS

       -c, --config - define a config file to use.

       -d, --debug - activate debugging mode, helpful if bugs occur.

       -D, --dinstall - do a dry run of dinstall after the upload.

       -f, --force - force an upload of an already uploaded package.

       -h, --help - print help information and exit.

       -H, --host-list - print the lists of hosts that dput knows about.

       -l, --lintian - run lintian before the upload.

       -U, --no-upload-log - do not write a .upload log file after uploading.

       -o, --check-only - check only the package and do not upload.

       -p, --print - print the configuration that dput is using.

       -P, --passive - use passive ftp instead of active. Note that passive ftp is the default unless specified  otherwise  in	the  configuration
       file.

       -s, --simulate - simulate an upload only.

       -u, --unchecked - don't check GnuPG signature on the changes file.

       -e,  --delayed  - Upload to a DELAYED queue, rather than the usual Incoming. This takes an argument from 0 to 15. Note that a delay of 0 is
       different from no delay at all.

       -v, --version - print version information and exit.

       -V, --check-version - check if the user has already installed and tested the package before putting it into the archive.

ENVIRONMENT

       This program doesn't depend on any environment variables. But if the variable USER is set, it will be used.

LICENSE

       This program is distributed under the terms of the GPL.

BUGS

       Please send bug reports to the author.

FILES

       /etc/dput.cf
	      global dput configuration file

       ~/.dput.cf
	      peruser dput configuration file

SEE ALSO

       dput.cf(5)
       dcut(1)
       /usr/share/doc/dput
       /usr/share/dput

AUTHOR

       dput was written Christian Kurz. The current maintainer is Thomas Viehmann <tv@beamnet.de>.

       Many other people have contributed to this code. See the Thanks file.

COMMENTS

       The author does appreciate comments and suggestions from you.

								  October 5, 2001							   dput(1)
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