Hi guys,
I have a ceph cluster with three MDS servers, two of them in active status,
while the left one is in standby-replay mode. Today I found the message '1
MDSs are read only' show up when check the cluster status with 'ceph -s',
details as below:
# ceph -s
cluster:
id: 3d43e9a5-50dc-4f84-9493-656bf4f06f8c
health: HEALTH_WARN
5 clients failing to advance oldest client/flush tid
1 MDSs are read only
2 MDSs report slow requests
2 MDSs behind on trimming
BlueFS spillover detected on 33 OSD(s)
services:
mon: 3 daemons, quorum bjcpu-001,bjcpu-002,bjcpu-003 (age 3M)
mgr: bjcpu-001.xxxx.io(active, since 3M), standbys: bjcpu-003.xxxx.io,
bjcpu-002.xxxx.io
mds: cephfs:2 {0=bjcpu-003.xxxx.io=up:active,1=bjcpu-001.xxxx.io=up:active}
1 up:standby-replay
osd: 48 osds: 48 up (since 7w), 48 in (since 7M)
data:
pools: 3 pools, 2304 pgs
objects: 301.35M objects, 70 TiB
usage: 246 TiB used, 280 TiB / 527 TiB avail
pgs: 2295 active+clean
9 active+clean+scrubbing+deep
io:
client: 254 B/s rd, 44 MiB/s wr, 0 op/s rd, 15 op/s wr
What should I do to fix the error message? it seems the cluster still works
fine(can read and write).
Many thanks
--
Regards
Frank Yu
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