[ceph-users] 答复: About dmClock tests confusion after integrating dmClock QoS library into ceph codebase

2017-07-01 Thread Lijie
We have tried to use simulator and design various scenarios for testing dmclock，but the results are ideal when we test limit and proportion in some scenarios , failed in reservation case .And we cannot ignore the truth ,the simulator differs with ceph running environment .Dmclock proportion

[ceph-users] About dmclock theory defect 答复: About dmClock tests confusion after integrating dmClock QoS library into ceph codebase

2017-07-01 Thread Lijie
Hi Eric, We applied dmclock in ceph, but in actual environments only the limitation worked while the reservation and proportion had no real effect at all. After careful analysis, we find that the dmclock algrithm developed from the mclock algrithm, has great defects in theory. First

Re: [ceph-users] 300 active+undersized+degraded+remapped

2017-07-01 Thread Deepak Naidu
Thanks Max, yes the location hook is ideal way. But as I have few NVME per node I ended up using ceph.conf to add them to correct location. -- Deepak On Jul 1, 2017, at 11:52 AM, Maxime Guyot > wrote: Hi Deepak, As Wildo pointed it out in the

Re: [ceph-users] 300 active+undersized+degraded+remapped

2017-07-01 Thread Maxime Guyot
Hi Deepak, As Wildo pointed it out in the thread you linked, "osd crush update on start" and osd crush location are quick ways to fix this. If you are doing custom locations (like for tiering NVMe vs HDD) "osd crush location hook" (Doc:

Re: [ceph-users] Any recommendations for CephFS metadata/data pool sizing?

2017-07-01 Thread Wido den Hollander
> Op 1 juli 2017 om 1:04 schreef Tu Holmes : > > > I would use the calculator at ceph and just set for "all in one". > > http://ceph.com/pgcalc/ > I wouldn't do that. With CephFS the data pool(s) will contain much more objects and data then the metadata pool. You can

Re: [ceph-users] Kernel mounted RBD's hanging

2017-07-01 Thread Ilya Dryomov
On Sat, Jul 1, 2017 at 9:29 AM, Nick Fisk wrote: >> -Original Message- >> From: Ilya Dryomov [mailto:idryo...@gmail.com] >> Sent: 30 June 2017 14:06 >> To: Nick Fisk >> Cc: Ceph Users >> Subject: Re: [ceph-users] Kernel

Re: [ceph-users] Kernel mounted RBD's hanging

2017-07-01 Thread Nick Fisk
> -Original Message- > From: Ilya Dryomov [mailto:idryo...@gmail.com] > Sent: 30 June 2017 14:06 > To: Nick Fisk > Cc: Ceph Users > Subject: Re: [ceph-users] Kernel mounted RBD's hanging > > On Fri, Jun 30, 2017 at 2:14 PM, Nick Fisk