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Date: Thu, 15 Aug 2002 18:42:01 -0700
To: cygwin@cygwin.com
From: Sean Brannon <brannon5@llnl.gov>
Subject: re: Random Rsync 2.5.5-1 hang using Cron 3.0.1-7
Cc: amg@townisp.com
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I'm having much the same problem. The major difference is that it doesn't 
matter if the job is executed from cron or the shell, both will result in 
hangs with a very high frequency.

 >Hi,
 >
 >I'm running Cygwin 1.3.12 (and a few previous) and I keep encountering an
 >Rsync hang. I have a small rsync script (see below) that does backups of my
 >HD to an external HD. On occasion, usually when I have an IDE open, rsync
 >will hang when run as a cron job.
 >
 >I did some searching through the mailing list archives and found there were
 >a few patches that went into the Rsync 2.4.x releases for this style of
 >issue, but nothing relating to cron, and no issues since the patch went into
 >rsync 2.5.x. Nothing in the documentation seems to indicate any issues or
 >requirements for what I'm doing (it doesn't look like I need an rsync server
 >to do a local copy).
 >
 >The problem seems to only occur when the job is run through Cron, running it
 >via the shell will work fine. Once hung there will be two Rsync processes
 >(see excerpt below) and the sh and tcsh spawned by Cron. All but one of
 >these will be kill -9'able. The other can be closed via the windows task
 >manager.
 >
 >The log that the process generates shows no errors (exceprt below) and shows
 >what seems to be a complete run of rsync just before output is given.
 >
 >I'm at a loss at what else this could be. I've tried the script in tcsh and
 >bash, both in the script and as specified in cron.
 >
 >Thanks in advance,
 >-Al
 >
 >---------------------------------excerpts
 >follow ----------------------------------
 >
 >// -------------------------- DLL Version
 >1.3.12-cygwin-1-3-12-1
 >
 >// -------------------------- Tools Versions
 >cron                3.0.1-7
 >rsync               2.5.5-1
 >
 >
 >//------------------------------- Log excerpt
 >$ tail logs/Thursday_AM_backup.log
 >Projects/carspecs/SQL Work/NSCYV_1-2.EXE
 >Projects/carspecs/SQL Work/SSCJ_CS2002_TextFiles_UTF8.exe
 >Projects/carspecs/SQL Work/SSCUSA_CS2002_TEXTFILES.EXE
 >Projects/carspecs/SQL Work/SSCUSA_CS2002_TextFiles_UTF8.exe
 >Projects/carspecs/SQL Work/SbF - SQLs.txt is uptodate
 >Projects/carspecs/Sources/MultiCountryTestApp/Form1.frm is uptodate
 >Projects/carspecs/Sources/MultiCountryTestApp/MSSCCPRJ.SCC is uptodate
 >Projects/carspecs/Sources/MultiCountryTestApp/Project1.vbp is uptodate
 >Projects/carspecs/Sources/MultiCountryTestApp/Project1.vbw is uptodate
 >total: matches=0  tag_hits=0  false_alarms=0 data=133019599
 >
 >//------------------------------ Script
 >#!/usr/bin/tcsh
 >
 ># Parameters
 >set backupdirs = "$HOME /d/Projects"
 >set logFile = "$HOME/logs/`date "+%A_%p_backup.log"`"
 >set excludes = "$HOME/backups/excludes.rsync"
 >
 ># Start time
 >date > $logFile
 >
 ># Do the backups
 >foreach dir ($backupdirs)
 >        rsync -av -v --delete --exclude-from=$excludes $dir
 >/g/backups/`date '+%
 >A'` >>& $logFile
 >end
 >
 ># End Time
 >date >> $logFile
 >
 >
 >// --------------------------------- Processes once hang has occured
 >$ ps
 >      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
 >      208       1     208        208  con 1004 07:30:05 /usr/bin/tcsh
 >     1640    2776    1640       3656    ? 1004 11:45:01 /usr/bin/sh
 >     3644    1640    1640       3644    ? 1004 11:45:01 /usr/bin/tcsh
 >     3964    3644    1640       3372    ? 1004 11:45:07 /usr/bin/rsync
 >     2668    3964    1640       2668    ? 1004 11:45:07 /usr/bin/rsync
 >     1164     208    1164       2368  con 1004 12:50:31 /usr/bin/ps
 >$
 >
 >
 >// ------------------------------ Crontab -l
 ># DO NOT EDIT THIS FILE - edit the master and reinstall.
 ># (/tmp/crontab.580 installed on Wed Aug  7 16:41:33 2002)
 ># (Cron version -- $Id: crontab.c,v 1.6 2001/09/19 17:09:55 corinna Exp $)
 ># Defaults
 >MAILTO=al.goodniss@jato.com
 >
 >#Testing
 >#37 16 * * * $HOME/backups/nightlyBackups
 >
 ># Backups
 >45 11,15 * * * $HOME/backups/nightlyBackups


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