Re: Geo-replication stops after 4-5 hours

Marcus Pedersén <marcus.pedersen@xxxxxx> · Mon, 6 Aug 2018 11:28:51 +0000

Hi,
Is there a way to resolve the problem with rsync and hanging processes?
Do I need to kill all the processes and hope that it starts again or stop/start geo-replication?

If I stop/start geo-replication it will start again, I have tried it before.

Regards
Marcus

Från: gluster-users-bounces@xxxxxxxxxxx <gluster-users-bounces@xxxxxxxxxxx> för Marcus Pedersén <marcus.pedersen@xxxxxx>

Skickat: den 2 augusti 2018 10:04

Till: Kotresh Hiremath Ravishankar

Kopia: gluster-users@xxxxxxxxxxx

Ämne: Re:  Geo-replication stops after 4-5 hours

Hi Kotresh,

I get the following and then it hangs:

strace: Process 5921 attached                    write(2, "rsync: link_stat \"/tmp/gsyncd-au"..., 12811

When sync is running I can see rsync with geouser on the slave node.

Regards
Marcus

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Marcus Pedersén

Systemadministrator 

Interbull Centre

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Sent from my phone 

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Den 2 aug. 2018 09:31 skrev Kotresh Hiremath Ravishankar <khiremat@xxxxxxxxxx>:

Cool, just check whether they are hung by any chance with following command.

#strace -f -p 5921

On Thu, Aug 2, 2018 at 12:25 PM, Marcus Pedersén 
<marcus.pedersen@xxxxxx> wrote:

On both active master nodes there is an rsync process. As in:

root      5921  0.0  0.0 115424  1176 ?        S    Aug01   0:00 rsync -aR0 --inplace --files-from=- --super --stats --numeric-ids --no-implied-dirs --xattrs --acls . -e ssh -oPasswordAuthentication=no -oStrictHostKeyChecking=no -i /var/lib/glusterd/geo-replication/secret.pem
 -p 22 -oControlMaster=auto -S /tmp/gsyncd-aux-ssh-stuphs/bf60c68f1a195dad59573a8dbaa309f2.sock geouser@urd-gds-geo-001:/proc/13077/cwd

There is also ssh tunnels to slave nodes and  gsyncd.py processes.

Regards
Marcus 

################

Marcus Pedersén

Systemadministrator 

Interbull Centre

################

Sent from my phone 

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Den 2 aug. 2018 08:07 skrev Kotresh Hiremath Ravishankar <khiremat@xxxxxxxxxx>:

Could you look of any rsync processes hung in master or slave?

On Thu, Aug 2, 2018 at 11:18 AM, Marcus Pedersén 
<marcus.pedersen@xxxxxx> wrote:

Hi Kortesh,
rsync  version 3.1.2  protocol version 31
All nodes run CentOS 7, updated the last couple of days.

Thanks
Marcus 

################

Marcus Pedersén

Systemadministrator 

Interbull Centre

################

Sent from my phone 

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Den 2 aug. 2018 06:13 skrev Kotresh Hiremath Ravishankar <khiremat@xxxxxxxxxx>:

Hi Marcus,

What's the rsync version being used?

Thanks,

Kotresh HR

On Thu, Aug 2, 2018 at 1:48 AM, Marcus Pedersén <marcus.pedersen@xxxxxx> wrote:

Hi all!
I upgraded from 3.12.9 to 4.1.1 and had problems with geo-replication.
With help from the list with some sym links and so on (handled in another thread)
I got the geo-replication running.
It ran for 4-5 hours and then stopped, I stopped and started geo-replication and it ran for another 4-5 hours.
4.1.2 was released and I updated, hoping this would solve the problem.
I still have the same problem, at start it runs for 4-5 hours and then it stops.
After that nothing happens, I have waited for days but still nothing happens.

I have looked through logs but can not find anything obvious.

Status for geo-replication is active for the two same nodes all the time:

MASTER NODE    MASTER VOL        MASTER BRICK         SLAVE USER    SLAVE                                      SLAVE NODE         STATUS     CRAWL STATUS     LAST_SYNCED            ENTRY    DATA     META    FAILURES    CHECKPOINT TIME        CHECKPOINT
 COMPLETED    CHECKPOINT COMPLETION TIME   

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

urd-gds-001    urd-gds-volume    /urd-gds/gluster     geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-000    Active     History Crawl    2018-04-16 20:32:09    0        14205    0       0           2018-07-27 21:12:44    No                     
 N/A                          

urd-gds-002    urd-gds-volume    /urd-gds/gluster     geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-002    Passive    N/A              N/A                    N/A      N/A      N/A     N/A         N/A                    N/A                    
 N/A                          

urd-gds-004    urd-gds-volume    /urd-gds/gluster     geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-002    Passive    N/A              N/A                    N/A      N/A      N/A     N/A         N/A                    N/A                    
 N/A                          

urd-gds-003    urd-gds-volume    /urd-gds/gluster     geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-000    Active     History Crawl    2018-05-01 20:58:14    285      4552     0       0           2018-07-27 21:12:44    No                     
 N/A                          

urd-gds-000    urd-gds-volume    /urd-gds/gluster1    geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-001    Passive    N/A              N/A                    N/A      N/A      N/A     N/A         N/A                    N/A                    
 N/A                          

urd-gds-000    urd-gds-volume    /urd-gds/gluster2    geouser       geouser@urd-gds-geo-001::urd-gds-volume    urd-gds-geo-001    Passive    N/A              N/A                    N/A      N/A      N/A     N/A         N/A                    N/A                    
 N/A 

Master cluster is Distribute-Replicate 
2 x (2 + 1) 
Used space 30TB

Slave cluster is Replicate
1 x (2 + 1)
Used space 9TB

Parts from gsyncd.logs are enclosed.

Thanks a lot!

Best regards
Marcus Pedersén

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