Re: [ceph-users] cephfs-data-scan tool

2018-09-27 Thread Sergey Malinin
> > On 27.09.2018, at 15:04, John Spray wrote: > > On Thu, Sep 27, 2018 at 11:34 AM Sergey Malinin wrote: >> >> Can such behaviour be related to data pool cache tiering? > > Yes -- if there's a cache tier in use then deletions in the base pool > can be delayed and then happen later when the

Re: [ceph-users] cephfs-data-scan tool

2018-09-27 Thread John Spray
On Thu, Sep 27, 2018 at 11:34 AM Sergey Malinin wrote: > > Can such behaviour be related to data pool cache tiering? Yes -- if there's a cache tier in use then deletions in the base pool can be delayed and then happen later when the cache entries get expired. You may find that for a full scan

Re: [ceph-users] cephfs-data-scan tool

2018-09-27 Thread Sergey Malinin
Can such behaviour be related to data pool cache tiering? > On 27.09.2018, at 13:14, Sergey Malinin 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,

Re: [ceph-users] cephfs-data-scan tool

2018-09-27 Thread Sergey Malinin
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 wrote: > > On Thu, Sep 27, 2018 at 11:03 AM Sergey Malinin wrote: >> >> Hello, >> Does anybody have

Re: [ceph-users] cephfs-data-scan tool

2018-09-27 Thread John Spray
On Thu, Sep 27, 2018 at 11:03 AM Sergey Malinin 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