Hi,
set the cache-tier size to 644245094400.
This should work.
But it is the same.
thanks
regards
-----Original message-----
From: Gregory Farnum <greg@xxxxxxxxxxx>
Sent: Thursday 9th April 2015 15:44
To: Patrik Plank <patrik@xxxxxxxx>
Cc: ceph-users@xxxxxxxxxxxxxx
Subject: Re: [ceph-users] cache-tier do not evict
On Thu, Apr 9, 2015 at 4:56 AM, Patrik Plank <patrik@xxxxxxxx> wrote:
> Hi,
>
>
> i have build a cach-tier pool (replica 2) with 3 x 512gb ssd for my kvm
> pool.
>
> these are my settings :
>
>
> ceph osd tier add kvm cache-pool
>
> ceph osd tier cache-mode cache-pool writeback
>
> ceph osd tier set-overlay kvm cache-pool
>
>
> ceph osd pool set cache-pool hit_set_type bloom
>
> ceph osd pool set cache-pool hit_set_count 1
>
> ceph osd pool set cache-pool hit set period 3600
>
>
> ceph osd pool set cache-pool target_max_bytes 751619276800
ˆ 750 GB. For 3*512GB disks that's too large a target value.
>
> ceph osd pool set cache-pool target_max_objects 1000000
>
>
> ceph osd pool set cache-pool cache_min_flush_age 1800
>
> ceph osd pool set cache-pool cache_min_evict_age 600
>
>
> ceph osd pool cache-pool cache_target_dirty_ratio .4
>
> ceph osd pool cache-pool cache target_full_ratio .8
>
>
> So the problem is, the cache-tier do no evict automatically.
>
> If i copy some kvm images to the ceph cluster, the cache osds always run
> full.
>
>
> Is that normal?
>
> Is there a miss configuration?
>
>
> thanks
>
> best regards
>
> Patrik
>
>
>
>
>
>
>
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>
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