Hi all, There are two mds in the ceph cluster,one is active and the other is standby. In my test, I found the mds0 was marked as laggy, and it was taken over by the standby soon. And it will take a long time for the standby to become active if there are a great many of requests from the client. I want to know under what circumstances mds would be marked as laggy. Here is my software version and ceph.conf. Ceph version 0.24.3 Linux kernel 2.6.35.9 Ceph.conf [global] pid file = ar/run/ceph/$name.pid debug ms = 1 [mon] mon data = /data/mon$id [mon.0] host = ceph1 mon addr = 192.168.1.101:6789 [mds] debug ms = 1 debug mds = 10 debug mds balancer = 10 debug mds log = 10 debug mds_migrator = 10 debug monc = 10 [mds0] host = ceph1 [mds1] host = ceph2 [osd] sudo = true osd data = /data/osd$id osd journal = /data/osd$id/journal [osd0] host = ceph3 btrfs devs = /dev/sda3 [osd1] host = ceph4 btrfs devs = /dev/sda3 Thanks -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html