Hi, Finally, I got a running server with files /sys/kernel/debug/ceph/xxx/ [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat mdsc [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat monc have monmap 2 want 3+ have osdmap 4545 want 4546 have fsmap.user 0 have mdsmap 335 want 336+ fs_cluster_id -1 [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat osdc REQUESTS 6 homeless 0 82580 osd10 1.7f9ddac7 [10,13]/10 [10,13]/10 10000053a04.00000000 0x400024 1 write 81019 osd11 1.184ed679 [11,7]/11 [11,7]/11 1000005397b.00000000 0x400024 1 write 81012 osd12 1.cd98ed57 [12,9]/12 [12,9]/12 10000053971.00000000 0x400024 1 write,startsync 82589 osd12 1.7cd5405a [12,8]/12 [12,8]/12 10000053a13.00000000 0x400024 1 write,startsync 80972 osd13 1.91886156 [13,4]/13 [13,4]/13 10000053939.00000000 0x400024 1 write 81035 osd13 1.ac5ccb56 [13,4]/13 [13,4]/13 10000053997.00000000 0x400024 1 write
The cluster claims nothing, and shows HEALTH_OK still. What I did is just vim a file storing on cephfs, and then it hung there. And I got a process with 'D' stat. By the way, the whole mount directory is still in use and with no error. What can I do to fix it? Burkhard Linke <burkhard.li...@computational.bio.uni-giessen.de> 于2018年8月9日周四 下午9:42写道： > Hi, > > > On 08/09/2018 03:21 PM, Yan, Zheng wrote: > > try 'mount -f', recent kernel should handle 'mount -f' pretty well > > On Wed, Aug 8, 2018 at 10:46 PM Zhenshi Zhou <deader...@gmail.com> > wrote: > >> Hi, > >> Is there any other way excpet rebooting the server when the client > hangs? > >> If the server is in production environment, I can't restart it > everytime. > > One method that worked for me today: > > - failover to other mds (during failover the client disconnect should be > denied, e.g. 'mds.ceph-storage-01 [INF] denied reconnect attempt (mds is > up:reconnect) from client.19660826 192.168.2.92:0/2522971681 (session is > closed)') > - failover to first mds again (this time, the client should not try to > connect. mds_sessions in the debug directory should not list a session) > - accessing the mountpoint triggered a reconned to the now active mds > > Regards, > Burkhard > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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