[ClusterLabs] Antw: Sudden Change of 300GB in FileSystem after Pacemaker Restart?

[Albert Akchurin]

I can't say for sure, but my thoughts:
- It probably has nothing to do with pacemaker, cluster and drbd
- SQL databases use garbage collector, which could do one big transaction
on restart and freed some space
- Filesystem itself may be using some sort of garbage collector, especially
on remounting. For example in btrfs there are delays between file deletions
and reporting space freed.

2016-10-04 13:02 GMT+03:00 Ulrich Windl <Ulrich.Windl at rz.uni-regensburg.de>:

> >>> Eric Robinson <eric.robinson at psmnv.com> schrieb am 04.10.2016 um
> 09:24 in
> Nachricht
> <DM5PR03MB2729E0F0799541985B326DF7FAC50 at DM5PR03MB2729.
> namprd03.prod.outlook.com>
>
> > The filesystem on my corosync+pacemaker cluster is 1TiB in size and was
> 95%
> > full, with only 54GB available. Drbd was UpToDate/UpToDate.
> >
> > I restarted Pacemaker, and after that my filesystem now shows 49% full
> with
> > 300GB+ free space.
> >
> > I checked and there does not seem to be any data missing. All MySQL
> > databases are up to date.
> >
> > Can anyone think of a reason that the filesystem numbers would change so
> > dramatically when all I did was restart Pacemaker?
>
> An open file had been "removed", so that it was actually removed when the
> process died?
>
> >
> > --
> > Eric Robinson
> >
> >
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