Hi,
see below for details of warnings.
the cluster is running 17.2.5. the warnings have been around for a while.
one concern of mine is num_segments growing over time. clients with
warn of MDS_CLIENT_OLDEST_TID
increase from 18 to 25 as well. The nodes are with kernel
4.19.0-91.82.42.uelc20.x86_64.
It looks like bugs with client library. And rebooting nodes with problem
will fix it for short period of time? Any suggestions from community for
fixing?
Thanks,
Ben
[root@8cd2c0657c77 /]# ceph health detail
HEALTH_WARN 6 hosts fail cephadm check; 2 clients failing to respond to
capability release; 25 clients failing to advance oldest client/flush tid;
3 MDSs report slow requests; 3 MDSs behind on trimming
[WRN] CEPHADM_HOST_CHECK_FAILED: 6 hosts fail cephadm check
host host15w (192.168.31.33) failed check: Unable to reach remote host
host15w. Process exited with non-zero exit status 1
host host20w (192.168.31.38) failed check: Unable to reach remote host
host20w. Process exited with non-zero exit status 1
host host19w (192.168.31.37) failed check: Unable to reach remote host
host19w. Process exited with non-zero exit status 1
host host17w (192.168.31.35) failed check: Unable to reach remote host
host17w. Process exited with non-zero exit status 1
host host18w (192.168.31.36) failed check: Unable to reach remote host
host18w. Process exited with non-zero exit status 1
host host16w (192.168.31.34) failed check: Unable to reach remote host
host16w. Process exited with non-zero exit status 1
[WRN] MDS_CLIENT_LATE_RELEASE: 2 clients failing to respond to capability
release
mds.code-store.host18w.fdsqff(mds.1): Client k8s-node36 failing to
respond to capability release client_id: 460983
mds.code-store.host16w.vucirx(mds.3): Client failing to respond to
capability release client_id: 460983
[WRN] MDS_CLIENT_OLDEST_TID: 25 clients failing to advance oldest
client/flush tid
mds.code-store.host18w.fdsqff(mds.1): Client k8s-node36 failing to
advance its oldest client/flush tid. client_id: 460983
mds.code-store.host18w.fdsqff(mds.1): Client failing to advance its
oldest client/flush tid. client_id: 460226
mds.code-store.host18w.fdsqff(mds.1): Client k8s-node32 failing to
advance its oldest client/flush tid. client_id: 239797
mds.code-store.host15w.reolpx(mds.5): Client k8s-node34 failing to
advance its oldest client/flush tid. client_id: 460226
mds.code-store.host15w.reolpx(mds.5): Client k8s-node32 failing to
advance its oldest client/flush tid. client_id: 239797
mds.code-store.host15w.reolpx(mds.5): Client failing to advance its
oldest client/flush tid. client_id: 460983
mds.code-store.host18w.rtyvdy(mds.7): Client k8s-node34 failing to
advance its oldest client/flush tid. client_id: 460226
mds.code-store.host18w.rtyvdy(mds.7): Client failing to advance its
oldest client/flush tid. client_id: 239797
mds.code-store.host18w.rtyvdy(mds.7): Client k8s-node36 failing to
advance its oldest client/flush tid. client_id: 460983
mds.code-store.host17w.kcdopb(mds.2): Client failing to advance its
oldest client/flush tid. client_id: 239797
mds.code-store.host17w.kcdopb(mds.2): Client failing to advance its
oldest client/flush tid. client_id: 460983
mds.code-store.host17w.kcdopb(mds.2): Client k8s-node34 failing to
advance its oldest client/flush tid. client_id: 460226
mds.code-store.host17w.kcdopb(mds.2): Client k8s-node24 failing to
advance its oldest client/flush tid. client_id: 12072730
mds.code-store.host20w.bfoftp(mds.4): Client k8s-node32 failing to
advance its oldest client/flush tid. client_id: 239797
mds.code-store.host20w.bfoftp(mds.4): Client k8s-node36 failing to
advance its oldest client/flush tid. client_id: 460983
mds.code-store.host19w.ywrmiz(mds.6): Client k8s-node24 failing to
advance its oldest client/flush tid. client_id: 12072730
mds.code-store.host19w.ywrmiz(mds.6): Client k8s-node34 failing to
advance its oldest client/flush tid. client_id: 460226
mds.code-store.host19w.ywrmiz(mds.6): Client failing to advance its
oldest client/flush tid. client_id: 239797
mds.code-store.host19w.ywrmiz(mds.6): Client failing to advance its
oldest client/flush tid. client_id: 460983
mds.code-store.host16w.vucirx(mds.3): Client failing to advance its
oldest client/flush tid. client_id: 460983
mds.code-store.host16w.vucirx(mds.3): Client failing to advance its
oldest client/flush tid. client_id: 460226
mds.code-store.host16w.vucirx(mds.3): Client failing to advance its
oldest client/flush tid. client_id: 239797
mds.code-store.host17w.pdziet(mds.0): Client k8s-node32 failing to
advance its oldest client/flush tid. client_id: 239797
mds.code-store.host17w.pdziet(mds.0): Client k8s-node34 failing to
advance its oldest client/flush tid. client_id: 460226
mds.code-store.host17w.pdziet(mds.0): Client k8s-node36 failing to
advance its oldest client/flush tid. client_id: 460983
[WRN] MDS_SLOW_REQUEST: 3 MDSs report slow requests
mds.code-store.host15w.reolpx(mds.5): 4 slow requests are blocked > 5
secs
mds.code-store.host20w.bfoftp(mds.4): 6 slow requests are blocked > 5
secs
mds.code-store.host16w.vucirx(mds.3): 97 slow requests are blocked > 5
secs
[WRN] MDS_TRIM: 3 MDSs behind on trimming
mds.code-store.host15w.reolpx(mds.5): Behind on trimming (25831/128)
max_segments: 128, num_segments: 25831
mds.code-store.host20w.bfoftp(mds.4): Behind on trimming (27605/128)
max_segments: 128, num_segments: 27605
mds.code-store.host16w.vucirx(mds.3): Behind on trimming (28676/128)
max_segments: 128, num_segments: 28676
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