Re: cephfs-data-scan tool

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Can such behaviour be related to data pool cache tiering?


> On 27.09.2018, at 13:14, Sergey Malinin <hell@xxxxxxxxxxx> wrote:
> 
> I'm trying alternate metadata pool approach. I double checked that MDS servers are down and both original and recovery fs are set not joinable.
> 
> 
>> On 27.09.2018, at 13:10, John Spray <jspray@xxxxxxxxxx> wrote:
>> 
>> On Thu, Sep 27, 2018 at 11:03 AM Sergey Malinin <hell@xxxxxxxxxxx> wrote:
>>> 
>>> Hello,
>>> Does anybody have experience with using cephfs-data-scan tool?
>>> Questions I have are how long would it take to scan extents on filesystem with 120M relatively small files? While running extents scan I noticed that number of objects in data pool is decreasing over the time. Is that normal?
>> 
>> The scan_extents operation does not do any deletions, so that is
>> surprising.  Is it possible that you've accidentially left an MDS
>> running?
>> 
>> John
>> 
>> John
>> 
>>> Thanks.
>>> _______________________________________________
>>> ceph-users mailing list
>>> ceph-users@xxxxxxxxxxxxxx
>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 

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