rsync causing disk sleeps and loss of apps

[Richard]

On Mon, Jan 31, 2011 at 04:13:33PM +0000, Anne Wilson wrote:
> On Monday 31 January 2011 14:21:32 Richard wrote:
> > On Mon, Jan 31, 2011 at 12:28:04PM +0000, Anne Wilson wrote:
> > > On Monday 31 January 2011 11:39:55 Martin (KDE) wrote:
> > > > Ane, cann you run "lsof | grep pid-of-rsync" if it hangs (where
> > > > pid-of-rsync is the pid of a rsync process of course)? This command
> > > > will give you all files rsync tries to attach (at the time you run
> > > > lsof). If there are more rsync processes, try grep -E
> > > > "(pid1|pid2|pid3)" instead of the simple grep.
> > > 
> > > I seem to be getting the syntax wrong:
> > > 
> > > lsof | grep -E (3180|3181|3183)
> > > bash: syntax error near unexpected token `('
> > 
> > not sure if you tried this or took my previous example literally..
> > $pid was meant to be replaced by the actual PID of rsync. Did realise
> > too late that my example was very confusing.
> > 
> > Try
> >   ps axf|grep rsync
> > take the PID from it and do
> >   ll /proc/pid-number/fd
> > 
> No problem - I did realise that.
> 
> This command gives me three separate pids, the same three as I listed in the 
> command.  Each of those pids lists a whole set of files that it has, 
> presumably, compared when compiling the file list for transfer.  They all 
> appear to have the same file list.  All of them end with
> 
> /home/anne/WebPages /mnt/server_home/anne/

not sure if we are talking about the same thing, I was expecting something
like
$ ll /proc/9661/fd
total 0
lrwx------ 1 rz rz 64 2011-01-31 18:09 0 -> /dev/pts/7
lrwx------ 1 rz rz 64 2011-01-31 18:09 1 -> /dev/pts/7
lrwx------ 1 rz rz 64 2011-01-31 18:09 2 -> /dev/pts/7
lr-x------ 1 rz rz 64 2011-01-31 18:09 3 -> /home/rz/Mail/kde-lists

Is your rsync having all files open at the same time? Can't really
immagine.. but never have debugged rsync.

Another method to debug is to start the rsync command with
"strace -o rsync-debug.log -f rsync arguments"

You can look at the debug log with any viewer or do something like 
"grep open rsync-debug.log"
and post the last 30 lines here.



Richard

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