Hi,

do you mean during snapshot deletion or in general?

In general we do not have any swap usage at all. On none of the 4 hosts.

We had some swap I/O on the host that is SPM most of the time. But not
during that period where we tried to delete the snapshot.

Cheers,
Stefan

On 10/27/14 11:08, Markus Stockhausen wrote:
> Do you see swapping on the SPM? If yes a regular echo 3 > drop_caches could 
> help.
> 
> Markus
> 
> Am 27.10.2014 10:57 schrieb Stefan Wendler <stefan.wend...@tngtech.com>:
> Hi,
> 
> we have some really large snapshots left from a migration. Since our
> store is almost full now we have to delete them now.
> 
> Some snapshots are around 1TB already.
> 
> The last time we tried to delete a ~500GB snapshot the delete task
> blocked the whole diskstore's IO and the whole cluster and all hosts
> became unavailable.
> 
> Is there a way to delete large snapshots in a "humane" way that will not
> block everything?
> 
> Cheers,
> Stefan
> 
> 

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