Hi Nithya, thank you very much for your answer. I will wait for @Sunil opinion too before starting the upgrade procedure.
Since it will be the first upgrade of our Gluster cluster, I would like to know if it could be a “virtually dangerous" procedure and if it will be the risk of losing data :-) Unfortunately, I can’t do a preventive copy of the volume data in another location. If it is possible, could you please illustrate the right steps needed to complete the upgrade procedure from the 3.10.5 to the 3.12 version? Thank you again, Nithya. Thank you to all of you for the help! Regards, Mauro > Il giorno 14 set 2018, alle ore 16:59, Nithya Balachandran > <[email protected]> ha scritto: > > Hi Mauro, > > > The rebalance code started using fallocate in 3.10.5 > (https://bugzilla.redhat.com/show_bug.cgi?id=1473132 > <https://bugzilla.redhat.com/show_bug.cgi?id=1473132>) which works fine on > replicated volumes. However, we neglected to test this with EC volumes on > 3.10. Once we discovered the issue, the EC fallocate implementation was made > available in 3.11. > > At this point, I'm afraid the only option I see is to upgrade to at least > 3.12. > > @Sunil, do you have anything to add? > > Regards, > Nithya > > On 13 September 2018 at 18:34, Mauro Tridici <[email protected] > <mailto:[email protected]>> wrote: > > Hi Nithya, > > thank you for involving EC group. > I will wait for your suggestions. > > Regards, > Mauro > >> Il giorno 13 set 2018, alle ore 13:38, Nithya Balachandran >> <[email protected] <mailto:[email protected]>> ha scritto: >> >> This looks like an issue because rebalance switched to using fallocate which >> EC did not have implemented at that point. >> >> @Pranith, @Ashish, which version of gluster had support for fallocate in EC? >> >> >> Regards, >> Nithya >> >> On 12 September 2018 at 19:24, Mauro Tridici <[email protected] >> <mailto:[email protected]>> wrote: >> Dear All, >> >> I recently added 3 servers (each one with 12 bricks) to an existing Gluster >> Distributed Disperse Volume. >> Volume extension has been completed without error and I already executed the >> rebalance procedure with fix-layout option with no problem. >> I just launched the rebalance procedure without fix-layout option, but, as >> you can see in the output below, I noticed that some failures have been >> detected. >> >> [root@s01 glusterfs]# gluster v rebalance tier2 status >> Node Rebalanced-files size >> scanned failures skipped status run time in h:m:s >> --------- ----------- ----------- >> ----------- ----------- ----------- ------------ >> -------------- >> localhost 71176 3.2MB >> 2137557 1530391 8128 in progress 13:59:05 >> s02-stg 0 0Bytes >> 0 0 0 completed 11:53:28 >> s03-stg 0 0Bytes >> 0 0 0 completed 11:53:32 >> s04-stg 0 0Bytes >> 0 0 0 completed 0:00:06 >> s05-stg 15 0Bytes >> 17055 0 18 completed 10:48:01 >> s06-stg 0 0Bytes >> 0 0 0 completed 0:00:06 >> Estimated time left for rebalance to complete : 0:46:53 >> volume rebalance: tier2: success >> >> In the volume rebalance log file, I detected a lot of error messages similar >> to the following ones: >> >> [2018-09-12 13:15:50.756703] E [MSGID: 0] >> [dht-rebalance.c:1696:dht_migrate_file] 0-tier2-dht: Create dst failed on - >> tier2-disperse-6 for file - >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2005-12_grid.nc >> <http://sps_200508_003.cam.h0.2005-12_grid.nc/> >> [2018-09-12 13:15:50.757025] E [MSGID: 109023] >> [dht-rebalance.c:2733:gf_defrag_migrate_single_file] 0-tier2-dht: >> migrate-data failed for >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2005-12_grid.nc >> <http://sps_200508_003.cam.h0.2005-12_grid.nc/> >> [2018-09-12 13:15:50.759183] E [MSGID: 109023] >> [dht-rebalance.c:844:__dht_rebalance_create_dst_file] 0-tier2-dht: fallocate >> failed for >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2005-09_grid.nc >> <http://sps_200508_003.cam.h0.2005-09_grid.nc/> on tier2-disperse-9 >> (Operation not supported) >> [2018-09-12 13:15:50.759206] E [MSGID: 0] >> [dht-rebalance.c:1696:dht_migrate_file] 0-tier2-dht: Create dst failed on - >> tier2-disperse-9 for file - >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2005-09_grid.nc >> <http://sps_200508_003.cam.h0.2005-09_grid.nc/> >> [2018-09-12 13:15:50.759536] E [MSGID: 109023] >> [dht-rebalance.c:2733:gf_defrag_migrate_single_file] 0-tier2-dht: >> migrate-data failed for >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2005-09_grid.nc >> <http://sps_200508_003.cam.h0.2005-09_grid.nc/> >> [2018-09-12 13:15:50.777219] E [MSGID: 109023] >> [dht-rebalance.c:844:__dht_rebalance_create_dst_file] 0-tier2-dht: fallocate >> failed for >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2006-01_grid.nc >> <http://sps_200508_003.cam.h0.2006-01_grid.nc/> on tier2-disperse-10 >> (Operation not supported) >> [2018-09-12 13:15:50.777241] E [MSGID: 0] >> [dht-rebalance.c:1696:dht_migrate_file] 0-tier2-dht: Create dst failed on - >> tier2-disperse-10 for file - >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2006-01_grid.nc >> <http://sps_200508_003.cam.h0.2006-01_grid.nc/> >> [2018-09-12 13:15:50.777676] E [MSGID: 109023] >> [dht-rebalance.c:2733:gf_defrag_migrate_single_file] 0-tier2-dht: >> migrate-data failed for >> /CSP/sp1/CESM/archive/sps_200508_003/atm/hist/postproc/sps_200508_003.cam.h0.2006-01_grid.nc >> <http://sps_200508_003.cam.h0.2006-01_grid.nc/> >> >> Could you please help me to understand what is happening and how to solve it? >> >> Our Gluster implementation is based on Gluster v.3.10.5 >> >> Thank you in advance, >> Mauro >> >> >> _______________________________________________ >> Gluster-users mailing list >> [email protected] <mailto:[email protected]> >> https://lists.gluster.org/mailman/listinfo/gluster-users >> <https://lists.gluster.org/mailman/listinfo/gluster-users> >> > > > ------------------------- > Mauro Tridici > > Fondazione CMCC > CMCC Supercomputing Center > presso Complesso Ecotekne - Università del Salento - > Strada Prov.le Lecce - Monteroni sn > 73100 Lecce IT > http://www.cmcc.it <http://www.cmcc.it/> > > mobile: (+39) 327 5630841 > email: [email protected] <mailto:[email protected]> > ------------------------- Mauro Tridici Fondazione CMCC CMCC Supercomputing Center presso Complesso Ecotekne - Università del Salento - Strada Prov.le Lecce - Monteroni sn 73100 Lecce IT http://www.cmcc.it mobile: (+39) 327 5630841 email: [email protected]
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