Re: [Duplicity-talk] backing up using SFTP to a directory under my home directory

[Luis Tirado]

Hi Scott,

Thanks for the reply. In this case, I can manually browse, place,
remove files from the /proj/backup_dir directory via sftp command line
when I connect manually via sftp commandline, via doing cd
/proj/backup_dir, put, etc.

It seems what I'm missing is how to add batched commands to change to
the correct backup folder before placing the backup there, or somehow
to de-couple the creation of the backup archive from the actual
upload, something along those lines.

On Wed, Feb 7, 2018 at 7:54 PM, Scott Hannahs <address@hidden> wrote:
> Luis,
>
> Unfortunately since you don’t have control over the server it may be set up
> such that it does a chroot (change root) to your home directory in which
> case you can’t access file structure outside of that (aside from he symbolic
> link trick).
>
> See
> https://askubuntu.com/questions/49271/how-to-setup-a-sftp-server-with-users-chrooted-in-their-home-directories#49284
> for the settings that do this.  You might be able to read the settings on
> the server to see if it is set up that way.
>
> This is a standard security setting to protect the server from unwanted
> access and probing.
>
> -Scott
>
>
> On Feb 7, 2018, at 7:47 PM, Luis Tirado via Duplicity-talk
> <address@hidden> wrote:
>
> I have a Windows system running cygwin and duplicity (client) -- backup
> source
> I have a Linux server capable of using SFTP -- backup destination
>
> I am attempting to backup a folder from the client to the server. The
> folder I want to place the backups is underneath my home directory on
> the server, however:
>
> /proj/backup_dir
>
> When I issue a command like:
>
> export FTP_PASSWORD=mypass
> duplicity /cygdrive/c/folder_to_backup
> pexpect+sftp://address@hidden/proj/backup_dir
>
> What ends up happening is that this backs up the contents to
> ~/proj/backup_dir which is not what I want... Moving the backup after
> the fact would not work since I have a quota on my home directory
> which exceeds the backup's size.
>
> What I'd like it to do is to back up the contents to /proj/backup_dir
>
> I attempted to use a symlink on my home directory to point to the
> folder, and that works to an extent... This works:
>
> duplicity /cygdrive/c/folder_to_backup
> pexpect+sftp://address@hidden/symlinked_dir
>
> where symlinked_dir -> /proj/backup_dir
>
> but this does not:
>
> duplicity /cygdrive/c/folder_to_backup
> pexpect+sftp://address@hidden/symlinked_dir/subfolder
>
> I get messages like this:
> "bash-4.3$ cwdup.sh
> Local and Remote metadata are synchronized, no sync needed.
>      0 [main] python2.7 390948 child_info_fork::abort: address space
> needed by '_librsync.dll' (0x520000) is already oc
> cupied
>      0 [main] python2.7 411620 child_info_fork::abort: address space
> needed by '_librsync.dll' (0x520000) is already oc
> cupied
> Attempt 1 failed. ExceptionPexpect: pty.fork() failed: [Errno 11]
> Resource temporarily unavailable"
>
> I don't have control of this server, where I am backing up the data so
> I can't change where the sftp command places me in my home directory
> when I log in.
>
> Is there another way I can accomplish backing up to some folder
> underneath the server's root (/) directory, rather than on my home
> (~/) directory?
>
> Thanks!
>
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