[ceph-users] ubuntu 14.04 or centos 7

Hi, I am looking for OS for my ceph cluster, from http://docs.ceph.com/docs/master/start/os-recommendations/#infernalis-9-1-0, there are two OS has been fully tested, centos 7 and ubuntu 14.04. Which one is better? thanks. ___ ceph-users mailing list cep

[ceph-users] OSD size and performance

Hi Team, We are using ceph with 3 osd and 2 replicas. Each osd size is 13TB and current data is reached to 2.5TB (each osd). Because of this huge size do we face any problem. OSD server configuration Hard disk -- 13TB RAM -- 96GB CPU -- 2 CPU with multi 8 core processor.

Re: [ceph-users] Tuning ZFS + QEMU/KVM + Ceph RBD’s

Yes, given the architectural design limitations of ZFS, there will indeed always be performance consequences for using it in an environment its creators never envisioned, like Ceph. But ZFS offers many advanced features not found on other filesystems, and for production environments that depend on

Re: [ceph-users] My OSDs are down and not coming UP

Hi, all nodes are in one VLAN connected to one switch. Conectivity is OK, MTU 1500, can transfer data over netcat and mbuffer at 660 Mbps. debug_ms, there is nothing interest: /usr/bin/ceph-osd --debug_ms 100 -f -i 0 --pid-file /run/ceph/osd.0.pid -c /etc/ceph/ceph.conf starting osd.0 at :/0

Re: [ceph-users] My OSDs are down and not coming UP

It could be a network issue..May be related to MTU (?)..Try running with debug_ms = 1 and see if you find anything..Also, try running command like 'traceroute' and see if it is reporting any error.. Thanks & Regards Somnath -Original Message- From: ceph-users [mailto:ceph-users-boun...@

[ceph-users] My OSDs are down and not coming UP

Hi, I'm a newbie in a Ceph world. I try setup my first testing Ceph cluster but unlikely my MON server running and talking each to other but my OSDs are still down and won't to come up. Actually only the one OSD running at the same node as a elected master is able to connect and come UP. To

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Hi Wido and Florent, After going back into the error-report with my new knowledge, I think I found the problem. It is the finalizer in com.ceph.rados.Rados.java Commenting out the finalize() method solved the problem. I have no idea why it causes all this trouble, and I don't know if commenti

Re: [ceph-users] Help! OSD host failure - recovery without rebuilding OSDs

HI Josef, Yes, everything came back to normal. Thanks for following up! > On Dec 28, 2015, at 11:25 , Josef Johansson wrote: > > Did you manage to work this out? > > On 25 Dec 2015 9:33 am, "Josef Johansson" > wrote: > Hi > > Someone here will probably lay out a

Re: [ceph-users] Help! OSD host failure - recovery without rebuilding OSDs

Did you manage to work this out? On 25 Dec 2015 9:33 am, "Josef Johansson" wrote: > Hi > > Someone here will probably lay out a detailed answer but to get you > started, > > All the details for the osd are in the xfs partitions, mirror a new USB > key and change ip etc and you should be able to r

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

On 28-12-15 15:25, KeesBoog wrote: > Thank you Florent and Wido, > > It seems that the sigsegv error occurs regardless of the code. Even if I > do not upload a file, the error occurs after a couple of minutes... > Strange! > Did you open a RADOS context or connection in that case? What versio

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Thank you Florent and Wido, It seems that the sigsegv error occurs regardless of the code. Even if I do not upload a file, the error occurs after a couple of minutes... Strange! Thanks again, Kees Op 28-12-2015 om 13:54 schreef Florent Manens: Hi Kees, I didn't test but try this : String

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Hi Kees, I didn't test but try this : String file_id = "testupload_" + Id.getNext("file_id"); try { String config_file = "/etc/ceph/ceph.conf"; // nothing fancy here String id = "admin"; String pool = "temp"; Rados rados; IoCT

[ceph-users] Ceph & Hbase

Hi! Does anyone succesfully configure hbase to use ceph? I'm having some problems with it, maybe anyone can help. I have ceph already running and ceph-hadoop bindings installed ('hadoop fs -ls /' working). I'm trying Hbase in pseudo distributed mode, but when starting hbase-master I'm gettin

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Hi Florent, Thanks. I did not consider 'plain Rados objects' and I am not sure how that would work. If you think that would solve the problem, perhaps you could elaborate? Would I still need Rbd to create a new image and set the size? In the example I replaced RbdImage image = rbd.o

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Hi Kees, Why don't you use plain Rados objects instead of a RBD ? Best regards, - Le 28 Déc 15, à 11:54, KeesBoog techie2...@denboogert.com a écrit : > Thanks Wido, > Here is the example code, taken from a Java web application. > There are no other calls to Rbd/Rados in the code. > // c

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

Thanks Wido, Here is the example code, taken from a Java web application. There are no other calls to Rbd/Rados in the code. // code altered for sake of the example (everything in one try/catch and random file name and initial size) // objective:

Re: [ceph-users] [rados-java] SIGSEGV librados.so Ubuntu

On 12/28/2015 07:18 AM, KeesBoog wrote: > Hi, > > I do love rados-java! I do get listings of ceph pools; I even can upload > files to a ceph pool with a Tomcat web application. That is great! > Great to hear! > However, I get frequent SIGSEGV errors (which halt Tomcat): > Ok, that is not good

Re: [ceph-users] cephfs, low performances

On Mon, Dec 28, 2015 at 1:24 PM, Francois Lafont wrote: > Hi, > > Sorry for my late answer. > > On 23/12/2015 03:49, Yan, Zheng wrote: > fio tests AIO performance in this case. cephfs does not handle AIO properly, AIO is actually SYNC IO. that's why cephfs is so slow in this case. >