8 Jul
2020
8 Jul
'20
8:27 p.m.
From my point of view, preventing clients from being added to blacklists
may be better if you
are in a poor network environment. AFAIK the server will send signals to
clients frequently. And
it will add someone to the blacklist if it doesn't receive a reply.
<380562518(a)qq.com> 于2020年7月8日周三 下午3:01写道：
Hi all.
If cephfs client is in a slow or unreliable network environment, the
client will be added to OSD blacklist and OSD map, and the default duration
is 1 hour.
During this time, the client will be forbidden to access CEPH. If I want
to solve this problem and ensure client's normal I/O operation is not
interrupted,
are the following two options feasible? which one is better?
1. Set "mds_session_blacklist_on_timeout" to false, and forbid to add slow
clients to blacklist;
2.Just reduce the duration of slow clients joining the blacklist, and
change the default 1 hour to 5 minutes.
(set the value of "mon_osd_blacklist_default_expire" to 5 minutes）
Are the two schemes feasible? Will it have a great impact on the data
security and integrity of CEPH?
Can you give me some suggestions?
Thanks.
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