ceph version:0.94.2

ceph.conf:
[global]
fsid = 51b9437c-b49d-460c-b919-4bd86cc4d97d
mon_initial_members = ubuntu2, ubuntu3, ubuntu4
mon_host = 192.168.33.182,192.168.33.183,192.168.33.184
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
filestore_xattr_use_omap = true

I don't have any special configuration

Thanks
发件人: Robert LeBlanc [mailto:[email protected]]
发送时间: 2015年8月28日 2:27
收件人: zhaomingyue 09440 (RD)
抄送: [email protected]
主题: Re: [ceph-users] shutdown primary monitor, status of the osds on it will 
not change, and command like 'rbd create xxx' would block


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The OSDs should be marked down within about 30 seconds. Can you provide 
additional information such as ceph version and the ceph.conf file.



Thanks,



- ----------------

Robert LeBlanc

PGP Fingerprint 79A2 9CA4 6CC4 45DD A904  C70E E654 3BB2 FA62 B9F1



On Thu, Aug 27, 2015 at 12:23 AM, 
[email protected]<mailto:[email protected]>  wrote:

Hi,

I'm testing ceph feature,and now have a probem make me confused.



Network construction is as shown in the figure below:

  serverB is primary monitor , it has 5 osds

  serverC is secondary monitor, it has 5 osds

  serverD is tertiary monitor,it has 5 osds

  client A use a rbd block via 'rbd map' command.



When shutdown serverB(primary monitor), input ‘ceph osd tree’ on serverC or 
serverD will show all the osd is up and in, At this time ,if input ‘rbd create 
aaa –size 100’, it will block, after neally 18 minutes, osds on serverB change 
status to down, and command ‘rbd create xxx’ return;



My question:

1.       Why rbd create will block about 18minutes? Is this because the status 
of osds on serverB(the shutdown one) is not modified to down? What is the time 
mechanism about this?



2.       When write objects, if primary osd think other osd is up, it will 
always wait until other osd reply, it doesn’t have timeout mechanism, isn’t it?



3.       The same environment , if I shutdown serverC(secondary monitor) , 
‘ceph osd tree’ show four osds down and another one osd is up;



if I shutdown serverD,the result is five osds are all down or all up, when all 
osd is up,the result is the same as shutdown server B;



shutdown primary monitor / secondary monitor / tertiary monitor, ceph status is 
not the same,I’m very confused about this.Can someone help me?



- 
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