Rsync to Network Share works from cmd but fails from Scheduled Task
leonv at bdp123.com
Thu Apr 2 15:56:59 UTC 2020
I was not aware the network maps were "user experience". Thanks for
your tips. I have tried everything I can come up with, but cannot get it
to work. I figured out another solution, but thank you very much for your
On Sun, Mar 29, 2020 at 9:23 PM raf via rsync <rsync at lists.samba.org> wrote:
> Leon Vanderploeg via rsync wrote:
> > Greetings,
> > I have written a C program that runs on Windows servers and does overhead
> > and reporting for backup administration. The program calls rsync for the
> > actual data copy function. It copies data from a remote system to a
> > drive and that works fine. However, I have recently made changes to copy
> > the data to a mapped drive on a NAS device instead of the local drive.
> > The changes work fine when run from a command line, but fail when run
> > a scheduled task or cron job:
> > rsync: mkdir "/cygdrive/q/restores" failed: No such file or directory
> > (2)
> > rsync error: error in file IO (code 11) at main.c(675)
> > Note: The folder already exists and permissions are open for
> > Command line that works is bash command to call the C program under
> > Administrator login.
> > Scheduled task built as Administrator with or without highest privileges
> > fails.
> > Tried Cron entry built under Administrator and it fails.
> > Here is the Rsync command (abbreviated) called by the C program:
> > rsync -rltgoD --chmod=Du+w,u+r,u+x -e "ssh -p 33222 -i
> > \"/cygdrive/c/Users/administrator/.ssh/id_rsa\"" --stats
> > -vv --exclude-from=/.... <usr>@remote:/<remote_loc> /cygdrive/q/restores
> > Note: q is the mapped drive to the NAS share.
> > So, what can be done to track this down? Why would running as a
> > task or cron job fail when command line works? I am willing to do any
> > of tracing if someone can provide directions on how to do that.
> > Thanks in advance,
> > Leon
> I think the most likely reason is that when you execute
> the command interactively, you are logged into Windows
> locally and your cached credentials are used to connect
> to the mapped drive. But that's not the case when the
> task is scheduled, and so the mapped drive isn't mapped
> when the scheduled task is attempted.
> Similarly, with Cygwin, you can only see
> /cygdrive/q/... while you are accessing it locally. If
> you ssh to a Windows host with Cygwin and sshd running,
> you can't see any mapped drives that are accessible to
> the local user, even if you ssh in as the same user.
> You will have to map the drive in the scheduled task
> before invoking rsync, and then unmap the drive
> afterwards. I don't know how to do that or handle the
> credentials that would be needed, but I think that's
> where to look.
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