Thanks for your reply. Yes, Already set it.
[mds] > mds_max_caps_per_client = 10485760 # default is 1048576 I think the current configuration is big enough for per client. Do I need to continue to increase this value? Thanks. Patrick Donnelly <pdonn...@redhat.com> 于2019年10月19日周六 上午6:30写道： > Hello Lei, > > On Thu, Oct 17, 2019 at 8:43 PM Lei Liu <liul.st...@gmail.com> wrote: > > > > Hi cephers, > > > > We have some ceph clusters use cephfs in production(mount with kernel > cephfs), but several of clients often keep a lot of caps（millions） > unreleased. > > I know this is due to the client's inability to complete the cache > release, errors might have been encountered, but no logs. > > > > client kernel version is 3.10.0-957.21.3.el7.x86_64 > > ceph version is mostly v12.2.8 > > > > ceph status shows: > > > > x clients failing to respond to cache pressure > > > > client kernel debug shows: > > > > # cat > /sys/kernel/debug/ceph/a00cc99c-f9f9-4dd9-9281-43cd12310e41.client11291811/caps > > total 23801585 > > avail 1074 > > used 23800511 > > reserved 0 > > min 1024 > > > > mds config: > > [mds] > > mds_max_caps_per_client = 10485760 > > # 50G > > mds_cache_memory_limit = 53687091200 > > > > I want to know if some ceph configurations can solve this problem ？ > > mds_max_caps_per_client is new in Luminous 12.2.12. See [1]. You need > to upgrade. > > [1] https://tracker.ceph.com/issues/38130 > > -- > Patrick Donnelly, Ph.D. > He / Him / His > Senior Software Engineer > Red Hat Sunnyvale, CA > GPG: 19F28A586F808C2402351B93C3301A3E258DD79D > >
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