[rrd-developers] Question: rrdtool pipe interface - restore support?

[Tobi Oetiker]

I think it should be possible to get this to work since I am using the pull parser in rrdtool restore

cheers

Tobias Oetiker
tobi at oetiker.ch
062 775 9902

> On 16.02.2014, at 03:21, Stanislav Sinyagin <ssinyagin at yahoo.com> wrote:
> 
> I don't think it does. Why isn't a usual file good enough? You can store it in tmpfs if the i/o speed is the concern. But usually rrdtool is slower than disk i/o anyway.
> 
> What I typically do, is execute rrdtool dump from an SSH command, so that its remote stdout is the ssh's local stdout, and save the XML to a local temporary file. Next the local rrdtool restore would slurp that file. 
> 
> If you need the XML to tweak some RRD parameter, you can use RRD::Tweak Perl module instead.
> 
> From: Peter Stamfest <peter at stamfest.at>
> To: rrd-developers at lists.oetiker.ch 
> Sent: Friday, February 14, 2014 9:39 PM
> Subject: [rrd-developers] Question: rrdtool pipe interface - restore support?
> 
> Hi,
> 
> Does the rrdtool pipe interface somehow support an in-stream xml restore
> command?
> 
> "dump" is  (mostly) working as expected, although one has to look for
> the "OK" response line to find out where the xml ends, but this is not a
> problem. "restore" however has the problem that it does not take input
> over the pipe interface. Using "-" as XML input seems to *partly* work,
> but fails with a parser error. Using /dev/stdin works when using the
> pipe interface on the command line, but can't work when using the pipe
> over a TCP connection....
> 
> Any ideas?
> 
> I admit that I am using a rather old version: 1.4.7...
> 
> peter
> 
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