[Pgcluster-general] new recovery rsync options, cybercluster

[Rick Vernam]

the attached patches (against cybercluster) allow one to specify values to be 
passed to rsync during -U or -u recovery

in cluster.conf:
Rsync_Timeout corresponds to rsync's own --timeout
Rsync_BWLimit corresponds to rsync's --bwlimit

I found a low bwlimit over a slow, long distance connection allowed rsync to 
finish more regularly (it had been hanging).

In the case of rsync hanging, a timeout causes rsync (and thus recovery 
process) to die peacefully after some period of time, rather than just 
hanging for ever.

The patch to recovery.c assumes the PGR_WITHOUT_BACKUP patch is already 
applied.
http://lists.pgfoundry.org/pipermail/pgcluster-general/2008-January/001781.html

I'll be checking shortly to see if these patches apply to pgcluster - if not, 
I'll post pgcluster patches also.
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