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...in (4+2) bricks, that is a [12x(4+2)] volume. My question is: in the current volume configuration, only 2 bricks per subvolume or one host could be down without losing data. What it will happen in the next configuration? How many hosts could be down without losing data? Thank you very much. Mauro Tridici

...ssue by storing time stamps as xattrs on the bricks. i.e. all bricks will have the same value. > > Hope this helps. > Ravi > > [1] https://github.com/gluster/glusterfs/issues/208 <https://github.com/gluster/glusterfs/issues/208> > > > On 01/02/2018 04:13 PM, Mauro Tridici wrote: >> Hi All, >> >> any news about this issue? >> Can I ignore this kind of error message or I have to do something to correct it? >> >> Thank you in advance and sorry for my insistence. >> Regards, >> Mauro >> >>> Il giorno 29 d...

Hi Mauro Tridici, >From the information provided it appears like you have placed 2 bricks of a subvolume on one host. Please confirm. The number of hosts that could go down without losing access to data can be derived based on the brick configuration/distribution. Please let us know the brick distribution plan...

Hi All, any news about this issue? Can I ignore this kind of error message or I have to do something to correct it? Thank you in advance and sorry for my insistence. Regards, Mauro > Il giorno 29 dic 2017, alle ore 11:45, Mauro Tridici <mauro.tridici at cmcc.it> ha scritto: > > > Hi Nithya, > > thank you very much for your support and sorry for the late. > Below you can find the output of ?gluster volume info tier2? command and the gluster software stack version: > > gluster volume info > &g...

...erent bricks causing it to complain . The ctime xlator[1] feature once ready should fix this issue by storing time stamps as xattrs on the bricks. i.e. all bricks will have the same value. Hope this helps. Ravi [1] https://github.com/gluster/glusterfs/issues/208 On 01/02/2018 04:13 PM, Mauro Tridici wrote: > Hi All, > > any news about this issue? > Can I ignore this kind of error message or I have to do something to > correct it? > > Thank you in advance and sorry for my insistence. > Regards, > Mauro > >> Il giorno 29 dic 2017, alle ore 11:45, Mauro Tridic...

...me based on the following hardware: - 3 gluster servers (each server with 2 CPU 10 cores, 64GB RAM, 12 hard disk SAS 12Gb/s, 10GbE storage network) Is there a way to detect the ideal value for client.event-threads, server.event-threads and performance.io-thread-count? Thank you in advance, Mauro Tridici -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170918/5acda3bc/attachment.html>

...r are you running and what is your volume configuration? IIRC, this was seen because of mismatches in the ctime returned to the client. I don't think there were issues with the files but I will leave it to Ravi and Raghavendra to comment. Regards, Nithya On 29 December 2017 at 04:10, Mauro Tridici <mauro.tridici at cmcc.it> wrote: > > Hi All, > > anyone had the same experience? > Could you provide me some information about this error? > It happens only on GlusterFS file system. > > Thank you, > Mauro > > Il giorno 20 dic 2017, alle ore 16:57, Mauro Tri...

Defaults should be fine in your size. In big clusters I usually set event-threads to 4. On Mon, Sep 18, 2017 at 10:39 PM, Mauro Tridici <mauro.tridici at cmcc.it> wrote: > > Dear All, > > I just implemented a (6x(4+2)) DISTRIBUTED DISPERSED gluster (v.3.10) volume > based on the following hardware: > > - 3 gluster servers (each server with 2 CPU 10 cores, 64GB RAM, 12 hard disk > SAS 12Gb/s, 10GbE stor...

...can go down without any issue. I think You should focus more on the number of Hard Drive in a sub volume. You should ask yourself "How many bricks (HD) with in a sub volume will be unavailable if 1 or 2 nodes are going down?" Ashish ----- Original Message ----- From: "Mauro Tridici" <mauro.tridici at cmcc.it> To: gluster-users at gluster.org Sent: Tuesday, September 19, 2017 1:09:06 AM Subject: [Gluster-users] how many hosts could be down in a 12x(4+2) distributed dispersed volume? Dear All, I just implemented a (6x(4+2)) DISTRIBUTED DISPERSED gluster (v.3.1...

...figuration? > > IIRC, this was seen because of mismatches in the ctime returned to the client. I don't think there were issues with the files but I will leave it to Ravi and Raghavendra to comment. > > > Regards, > Nithya > > > On 29 December 2017 at 04:10, Mauro Tridici <mauro.tridici at cmcc.it <mailto:mauro.tridici at cmcc.it>> wrote: > > Hi All, > > anyone had the same experience? > Could you provide me some information about this error? > It happens only on GlusterFS file system. > > Thank you, > Mauro > >> I...

...o host the probability you loose data will be %20 in this case. If you recreate volume with s1,s2,s3,s4,s5,s6 with one brick on each host any random two servers can go down. If you chose random two host the probability you loose data will be %0 in this case. On Mon, Sep 18, 2017 at 10:39 PM, Mauro Tridici <mauro.tridici at cmcc.it> wrote: > Dear All, > > I just implemented a (6x(4+2)) DISTRIBUTED DISPERSED gluster (v.3.10) volume based on the following hardware: > > - 3 gluster servers (each server with 2 CPU 10 cores, 64GB RAM, 12 hard disk SAS 12Gb/s, 10GbE storage network) &g...

Hi All, anyone had the same experience? Could you provide me some information about this error? It happens only on GlusterFS file system. Thank you, Mauro > Il giorno 20 dic 2017, alle ore 16:57, Mauro Tridici <mauro.tridici at cmcc.it> ha scritto: > > > Dear Users, > > I?m experiencing a random problem ( "file changed as we read it? error) during tar files creation on a distributed dispersed Gluster file system. > > The tar files seem to be created correctly, but I ca...

Hi Ashish, I?m sorry to disturb you again, but I would like to know if you received the log files correctly. Thank you, Mauro Tridici > Il giorno 26 set 2017, alle ore 10:19, Mauro Tridici <mauro.tridici at cmcc.it> ha scritto: > > > Hi Ashish, > > in attachment you can find the gdb output (with bt and thread outputs) and the complete log file until the crash happened. > > Thank you for your sup...

Dear Users, I?m experiencing a random problem ( "file changed as we read it? error) during tar files creation on a distributed dispersed Gluster file system. The tar files seem to be created correctly, but I can see a lot of message similar to the following ones: tar: ./year1990/lffd1990050706p.nc.gz: file changed as we read it tar: ./year1990/lffd1990052106p.nc.gz: file changed as we read

Hi Ashish, in attachment you can find the gdb output (with bt and thread outputs) and the complete log file until the crash happened. Thank you for your support. Mauro Tridici > Il giorno 26 set 2017, alle ore 10:11, Ashish Pandey <aspandey at redhat.com> ha scritto: > > Hi, > > Following are the command to get the debug info for gluster - > gdb /usr/local/sbin/glusterfs <core file path> > Then on gdb prompt you need to type bt or...

...lyze-a-programs-core-dump-file-with-gdb https://unix.stackexchange.com/questions/192716/how-to-set-the-core-dump-file-location-and-name https://stackoverflow.com/questions/2065912/core-dumped-but-core-file-is-not-in-current-directory -- Ashish ----- Original Message ----- From: "Mauro Tridici" <mauro.tridici at cmcc.it> To: "Ashish Pandey" <aspandey at redhat.com> Cc: "Gluster Users" <gluster-users at gluster.org> Sent: Tuesday, September 26, 2017 1:21:42 PM Subject: Re: [Gluster-users] df command shows transport endpoint mount error on glu...

...at.com> ha scritto: > > Hi Mauro, > > We would require complete log file to debug this issue. > Also, could you please provide some more information of the core after attaching to gdb and using command "bt". > > --- > Ashish > > > From: "Mauro Tridici" <mauro.tridici at cmcc.it> > To: "Gluster Users" <gluster-users at gluster.org> > Sent: Monday, September 25, 2017 5:59:10 PM > Subject: [Gluster-users] df command shows transport endpoint mount error on gluster client v.3.10.5 + core dump > > Dear...

Hi Mauro, We would require complete log file to debug this issue. Also, could you please provide some more information of the core after attaching to gdb and using command "bt". --- Ashish ----- Original Message ----- From: "Mauro Tridici" <mauro.tridici at cmcc.it> To: "Gluster Users" <gluster-users at gluster.org> Sent: Monday, September 25, 2017 5:59:10 PM Subject: [Gluster-users] df command shows transport endpoint mount error on gluster client v.3.10.5 + core dump Dear Gluster Users, I implemen...

...not true). So, I tried to remove the empty folder leaving /volume empty. Magically, the DF output returned the real values. Is there a way to update the DF command output without have to delete the subdirectory? Is there a correct procedure to be followed in this case? Thank you very much, Mauro Tridici -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170918/aaa2727b/attachment.html>

...7-09-18 19:01:45.918796 But in the produced output I see some data files previously saved on the volume and related MBps? and no other temporary file produced by ?dd?. Anyone of you could please explain what does ?gluster volume top? command really do and how to use it? Thank you very much, Mauro Tridici -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20170918/c7b2f51d/attachment.html>