[Gluster-users] question about sync replicate volume after rebooting one node

songxin
2016-02-17T06:14:14Z

Hi?
The version of glusterfs on  A node and B node are both 3.7.6.
The time on B node is same after rebooting because B node hasn't RTC. Does
it cause the problem?


If I run " gluster volume start gv0 force " the glusterfsd can be
started but "gluster volume start gv0" don't work.


The file  /var/lib/glusterd/vols/gv0/info on B node as below.
...
type=2
count=2
status=1
sub_count=2
stripe_count=1
replica_count=2
disperse_count=0
redundancy_count=0
version=2
transport-type=0
volume-id=c4197371-6d01-4477-8cb2-384cda569c27
username=62e009ea-47c4-46b4-8e74-47cd9c199d94
password=ef600dcd-42c5-48fc-8004-d13a3102616b
op-version=3
client-op-version=3
quota-version=0
parent_volname=N/A
restored_from_snap=00000000-0000-0000-0000-000000000000
snap-max-hard-limit=256
performance.readdir-ahead=on
brick-0=128.224.162.255:-data-brick-gv0
brick-1=128.224.162.163:-home-wrsadmin-work-tmp-data-brick-gv0


The file  /var/lib/glusterd/vols/gv0/info on A node as below.


wrsadmin at pek-song1-d1:~/work/tmp$ sudo cat /var/lib/glusterd/vols/gv0/info
type=2
count=2
status=1
sub_count=2
stripe_count=1
replica_count=2
disperse_count=0
redundancy_count=0
version=2
transport-type=0
volume-id=c4197371-6d01-4477-8cb2-384cda569c27
username=62e009ea-47c4-46b4-8e74-47cd9c199d94
password=ef600dcd-42c5-48fc-8004-d13a3102616b
op-version=3
client-op-version=3
quota-version=0
parent_volname=N/A
restored_from_snap=00000000-0000-0000-0000-000000000000
snap-max-hard-limit=256
performance.readdir-ahead=on
brick-0=128.224.162.255:-data-brick-gv0
brick-1=128.224.162.163:-home-wrsadmin-work-tmp-data-brick-gv0


Thanks,
Xin

At 2016-02-17 12:01:37, "Atin Mukherjee" <amukherj at
redhat.com> wrote:
>
>
>On 02/17/2016 08:23 AM, songxin wrote:
>> Hi,
>> Thank you for your immediate and detailed reply.And I have a few more
>> question about glusterfs.
>> A node IP is 128.224.162.163.
>> B node IP is 128.224.162.250.
>> 1.After reboot B node and start the glusterd service the glusterd log
is
>> as blow.
>> ...
>> [2015-12-07 07:54:55.743966] I [MSGID: 101190]
>> [event-epoll.c:632:event_dispatch_epoll_worker] 0-epoll: Started thread
>> with index 2
>> [2015-12-07 07:54:55.744026] I [MSGID: 101190]
>> [event-epoll.c:632:event_dispatch_epoll_worker] 0-epoll: Started thread
>> with index 1
>> [2015-12-07 07:54:55.744280] I [MSGID: 106163]
>> [glusterd-handshake.c:1193:__glusterd_mgmt_hndsk_versions_ack]
>> 0-management: using the op-version 30706
>> [2015-12-07 07:54:55.773606] I [MSGID: 106490]
>> [glusterd-handler.c:2539:__glusterd_handle_incoming_friend_req]
>> 0-glusterd: Received probe from uuid:
b6efd8fc-5eab-49d4-a537-2750de644a44
>> [2015-12-07 07:54:55.777994] E [MSGID: 101076]
>> [common-utils.c:2954:gf_get_hostname_from_ip] 0-common-utils: Could not
>> lookup hostname of 128.224.162.163 : Temporary failure in name
resolution
>> [2015-12-07 07:54:55.778290] E [MSGID: 106010]
>> [glusterd-utils.c:2717:glusterd_compare_friend_volume] 0-management:
>> Version of Cksums gv0 differ. local cksum = 2492237955, remote cksum
>> 4087388312 on peer 128.224.162.163
>The above log entry is the reason of the rejection of the peer, most
>probably its due to the compatibility issue. I believe the gluster
>versions are different (share gluster versions from both the nodes) in
>two nodes and you might have hit a bug.
>
>Can you share the delta of /var/lib/glusterd/vols/gv0/info file from
>both the nodes?
>
>
>~Atin
>> [2015-12-07 07:54:55.778384] I [MSGID: 106493]
>> [glusterd-handler.c:3780:glusterd_xfer_friend_add_resp] 0-glusterd:
>> Responded to 128.224.162.163 (0), ret: 0
>> [2015-12-07 07:54:55.928774] I [MSGID: 106493]
>> [glusterd-rpc-ops.c:480:__glusterd_friend_add_cbk] 0-glusterd: Received
>> RJT from uuid: b6efd8fc-5eab-49d4-a537-2750de644a44, host:
>> 128.224.162.163, port: 0
>> ...
>> When I run gluster peer status on B node it show as below.
>> Number of Peers: 1
>>
>> Hostname: 128.224.162.163
>> Uuid: b6efd8fc-5eab-49d4-a537-2750de644a44
>> State: Peer Rejected (Connected)
>>
>> When I run "gluster volume status" on A node  it show as
below.
>>
>> Status of volume: gv0
>> Gluster process                             TCP Port  RDMA Port  Online
Pid
>>
------------------------------------------------------------------------------
>> Brick 128.224.162.163:/home/wrsadmin/work/t
>> mp/data/brick/gv0                           49152     0          Y
>> 13019
>> NFS Server on localhost                     N/A       N/A        N
>> N/A
>> Self-heal Daemon on localhost               N/A       N/A        Y
>> 13045
>>
>> Task Status of Volume gv0
>>
------------------------------------------------------------------------------
>> There are no active volume tasks
>>
>> It looks like the glusterfsd service is ok on A node.
>>
>> If because the peer state is Rejected so gluterd didn't start the
>> glusterfsd?What causes this problem?
>>
>>
>> 2. Is glustershd(self-heal-daemon) the process as below?
>> root       497  0.8  0.0 432520 18104 ?        Ssl  08:07   0:00
>> /usr/sbin/glusterfs -s localhost --volfile-id gluster/glustershd -p
>> /var/lib/glusterd/glustershd/run/gluster ..
>>
>> If it is? I want to know if the glustershd is also the bin glusterfsd?
>> just like glusterd and glusterfs.
>>
>> Thanks,
>> Xin
>>
>>
>> At 2016-02-16 18:53:03, "Anuradha Talur" <atalur at
redhat.com> wrote:
>>>
>>>
>>>----- Original Message -----
>>>> From: "songxin" <songxin_1980 at 126.com>
>>>> To: gluster-users at gluster.org
>>>> Sent: Tuesday, February 16, 2016 3:59:50 PM
>>>> Subject: [Gluster-users] question about sync replicate volume
after	rebooting one node
>>>>
>>>> Hi,
>>>> I have a question about how to sync volume between two bricks
after one node
>>>> is reboot.
>>>>
>>>> There are two node, A node and B node.A node ip is 128.124.10.1
and B node ip
>>>> is 128.124.10.2.
>>>>
>>>> operation steps on A node as below
>>>> 1. gluster peer probe 128.124.10.2
>>>> 2. mkdir -p /data/brick/gv0
>>>> 3.gluster volume create gv0 replica 2 128.124.10.1
:/data/brick/gv0
>>>> 128.124.10.2 :/data/brick/gv1 force
>>>> 4. gluster volume start gv0
>>>> 5.mount -t glusterfs 128.124.10.1 :/gv0 gluster
>>>>
>>>> operation steps on B node as below
>>>> 1 . mkdir -p /data/brick/gv0
>>>> 2.mount -t glusterfs 128.124.10.1 :/gv0 gluster
>>>>
>>>> After all steps above , there a some gluster service process,
including
>>>> glusterd, glusterfs and glusterfsd, running on both A and B
node.
>>>> I can see these servic by command ps aux | grep gluster and
command gluster
>>>> volume status.
>>>>
>>>> Now reboot the B node.After B reboot , there are no gluster
service running
>>>> on B node.
>>>> After I systemctl start glusterd , there is just glusterd
service but not
>>>> glusterfs and glusterfsd on B node.
>>>> Because glusterfs and glusterfsd are not running so I can't
gluster volume
>>>> heal gv0 full.
>>>>
>>>> I want to know why glusterd don't start glusterfs and
glusterfsd.
>>>
>>>On starting glusterd, glusterfsd should have started by itself.
>>>Could you share glusterd and brick log (on node B) so that we know
why glusterfsd
>>>didn't start?
>>>
>>>Do you still see glusterfsd service running on node A? You can try
running "gluster v start <VOLNAME> force"
>>>on one of the nodes and check if all the brick processes started.
>>>
>>>gluster volume status <VOLNAME> should be able to provide you
with gluster process status.
>>>
>>>On restarting the node, glusterfs process for mount won't start
by itself. You will have to run
>>>step 2 on node B again for it.
>>>
>>>> How do I restart these services on B node?
>>>> How do I sync the replicate volume after one node reboot?
>>>
>>>Once the glusterfsd process starts on node B too, glustershd --
self-heal-daemon -- for replicate volume
>>>should start healing/syncing files that need to be synced. This
deamon does periodic syncing of files.
>>>
>>>If you want to trigger a heal explicitly, you can run gluster volume
heal <VOLNAME> on one of the servers.
>>>>
>>>> Thanks,
>>>> Xin
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Gluster-users mailing list
>>>> Gluster-users at gluster.org
>>>> http://www.gluster.org/mailman/listinfo/gluster-users
>>>
>>>--
>>>Thanks,
>>>Anuradha.
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-users
>>
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