perfSONAR User Q&A and Other Discussion

[Kathy Benninger <>]

Andy,

Then that would make sense.  Thanks!!

Kathy


On 10/12/2016 4:11 PM, Andrew Lake wrote:
> Hi,
>
> You probably don't have any stat_aggregations data which is normal, the docs
> might need to be updated to indicate that likelihood. I don't think the
> perfSONAR measurements actually use the “stat-aggregations" column-family so
> there is no data in there.
>
> Thanks,
> Andy
>
>
>
> On October 12, 2016 at 4:05:51 PM, Kathy Benninger 
> (
> <mailto:>)
>  wrote:
>
> > I'm following the procedure on
> > http://docs.perfsonar.net/multi_ma_backups.html
> >
> > "Managing Measurement Archive Data"
> > "Backing up and Restoring Data"
> > "Creating the Snapshot"
> >
> > I issued the command:
> > nodetool snapshot esmond -t esmond_snapshot
> >
> > but the stat_aggregations directory is not being populated:
> >
> > [root@ps benninge]# ls -al
> > /var/lib/cassandra/data/esmond/stat_aggregations/snapshots/esmond_snapshot
> > ls: cannot access
> > /var/lib/cassandra/data/esmond/stat_aggregations/snapshots/esmond_snapshot:
> > No such file or directory
> >
> > [root@ps benninge]# ls -al
> > /var/lib/cassandra/data/esmond/stat_aggregations/snapshots/
> > ls: cannot access
> > /var/lib/cassandra/data/esmond/stat_aggregations/snapshots/: No such file or
> > directory
> >
> > [root@ps benninge]# ls -al /var/lib/cassandra/data/esmond/stat_aggregations/
> > total 8
> > drwxr-xr-x 2 cassandra cassandra 4096 Oct 15 2014 .
> > drwxr-xr-x 6 cassandra cassandra 4096 Oct 15 2014 ..
> >
> > The other directories (base_rates, rate_aggregations, raw_data) are
> > populated and have files timestamped appropriately for the snapshot so that
> > much seems to be working.
> >
> > What should I check for stat_aggregations?
> >
> > Kathy
> >
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > Kathy Benninger
> > Pittsburgh Supercomputing Center