Re: [CentOS] rsync and cause/source of an empty file

2017-07-01 Thread Gordon Messmer

On 06/30/2017 01:42 PM, James B. Byrne wrote:

The setup is somewhat complicated in that the VAN
will not permit direct rsync access and so we establish the link via
sshfs and then mount remote location as local.



sshfs doesn't seem to preserve/transmit ctime, so rsync won't be able to 
reliably determine whether a file has changed based on times.  There's a 
small chance that you'll miss updates in this configuration.  That's 
probably not related to your problem, just a note on that setup.


Regarding the empty file, perhaps the source had the file locked for 
reading.  Do you know what type of system is providing the data?


___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos


Re: [CentOS] rsync and cause/source of an empty file

2017-07-01 Thread Joseph L. Casale
-Original Message-
From: CentOS [mailto:centos-boun...@centos.org] On Behalf Of James B.
Byrne
Sent: Friday, June 30, 2017 2:43 PM
To: centos@centos.org
Subject: [CentOS] rsync and cause/source of an empty file
 
> We transfer files from a VAN provider at 15 minute intervals using
> rsync over ssh.  The setup is somewhat complicated in that the VAN
> will not permit direct rsync access and so we establish the link via
> sshfs and then mount remote location as local.
> 
> My question is, given the above conditions and the following rsync
> command:
> 
> /usr/bin/rsync --chmod=o+r --chmod=g+w --itemize-changes
> --remove-sent-files --times /var/spool/imanet/pick_up/*
> /var/spool/imanet/drop_off
> 
> Under what circumstances would a file containing data at the remote
> end (/var/spool/imanet/pick_up/) arrive at our end
> (/var/spool/imanet/drop_off) as an empty file?  No transmission errors
> were logged and multiple files were transferred during the same
> session. All but one arrived with their contents intact.

First guess is you had the misfortune of syncing a file that was
being written to at the same time on the source end.

Not that it helps, but FFS, an EDI provider exposing rsync? What kind
of SP does that? This problem has been so concretely solved ages ago?
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos


[CentOS] rsync and cause/source of an empty file

2017-06-30 Thread James B. Byrne
We transfer files from a VAN provider at 15 minute intervals using
rsync over ssh.  The setup is somewhat complicated in that the VAN
will not permit direct rsync access and so we establish the link via
sshfs and then mount remote location as local.

My question is, given the above conditions and the following rsync
command:

/usr/bin/rsync --chmod=o+r --chmod=g+w --itemize-changes
--remove-sent-files --times /var/spool/imanet/pick_up/* 
/var/spool/imanet/drop_off

Under what circumstances would a file containing data at the remote
end (/var/spool/imanet/pick_up/) arrive at our end
(/var/spool/imanet/drop_off) as an empty file?  No transmission errors
were logged and multiple files were transferred during the same
session. All but one arrived with their contents intact.


-- 
***  e-Mail is NOT a SECURE channel  ***
Do NOT transmit sensitive data via e-Mail
 Do NOT open attachments nor follow links sent by e-Mail

James B. Byrnemailto:byrn...@harte-lyne.ca
Harte & Lyne Limited  http://www.harte-lyne.ca
9 Brockley Drive  vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada  L8E 3C3

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos