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Ceph storage system

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Re: Ceph storage system

#2
Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up.

GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

Re: Ceph storage system

#3

Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up. GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

Ceph has a yum repo for Centos, although Cephfs still does not work (maybe it will be backported to the "ancient" EL6 kernel someday). You can use the fuse client instead.

Configuration-wise, Ceph involves quite a bit of voodoo compared to Glusterfs, it's an area where I hope to see some improvement.

Re: Ceph storage system

#4

Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up. GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

One more feature I found very interesting in GlusterFS is the ability to export the volumes via NFS, transparently, to the NFS clients.

Re: Ceph storage system

#6
post #3

Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up. GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

Ceph has a yum repo for Centos, although Cephfs still does not work (maybe it will be backported to the "ancient" EL6 kernel someday). You can use the fuse client instead. Configuration-wise, Ceph involves quite a bit of voodoo compared to Glusterfs, it's an area where I hope to see some improvement.

Is the metadata server still a single point of failure?

Re: Ceph storage system

#7

Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up. GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

[deleted]

Re: Ceph storage system

#8
post #6
post #3

Earlier quoted context omitted.

Ceph has a yum repo for Centos, although Cephfs still does not work (maybe it will be backported to the "ancient" EL6 kernel someday). You can use the fuse client instead. Configuration-wise, Ceph involves quite a bit of voodoo compared to Glusterfs, it's an area where I hope to see some improvement.

Is the metadata server still a single point of failure?

The metadata server has never been a single point of failure in Ceph.

Re: Ceph storage system

#9

Not sure if much has changed, but the last time I tried to install Ceph it wouldn't work under CentOS. That, and it was far too complicated to set up. GlusterFS, on the other hand, was incredibly easy, although I am not a fan of FUSE due to the high CPU usage.

Platform support (http://ceph.com/docs/master/install/os-recommendations/#plat...) and deployment tools have come a long way. In the past setup has been complicated (Ceph is inherently more complex than other systems), but it is getting much easier. There is also extensive documentation at http//ceph.com/docs, as well as very active IRC channel and mailing lists for support.

Ceph is much larger than just the file system (as the article points out). And while many Ceph products/subsystems are used extensively in production environments (RBD block store, RGW, and RADOS), CephFS isn't officially supported as production-ready.

Despite that, we run Hadoop on top of CephFS, and can deal with the occasional metadata server problem. CephFS is actively being hardened.

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