I was doing parallel deletes until the point when there are >1M objects in the 
stry. Then delete fails with ‘no space left’ error. If one would deep-scrub 
those pgs containing corresponidng metadata, they turn to be inconsistent. In 
worst case one would get virtually empty folders that have size of 16EB. Those 
are impossible to delete as they are ‘non empty’. 


From: Gregory Farnum
Sent: Saturday, 15 October 2016 05:02
To: Mykola Dvornik
Cc: Heller, Chris; ceph-users@lists.ceph.com
Subject: Re: [ceph-users] cephfs slow delete

On Fri, Oct 14, 2016 at 6:26 PM,  <mykola.dvor...@gmail.com> wrote:
> If you are running 10.2.3 on your cluster, then I would strongly recommend
> to NOT delete files in parallel as you might hit
> http://tracker.ceph.com/issues/17177

I don't think these have anything to do with each other. What gave you
the idea simultaneous deletes could invoke that issue?

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