Re: [ceph-users] ceph block - volume with RAID#0
Den fre 1 feb. 2019 kl 06:30 skrev M Ranga Swami Reddy : > Here user requirement is - less write and more reads...so not much > worried on performance . > So why go for raid0 at all? It is the least secure way to store data. -- May the most significant bit of your life be positive. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] ceph block - volume with RAID#0
Here user requirement is - less write and more reads...so not much worried on performance . Thanks Swami On Thu, Jan 31, 2019 at 1:55 PM Piotr Dałek wrote: > > On 2019-01-31 6:05 a.m., M Ranga Swami Reddy wrote: > > My thought was - Ceph block volume with raid#0 (means I mounted a ceph > > block volumes to an instance/VM, there I would like to configure this > > volume with RAID0). > > > > Just to know, if anyone doing the same as above, if yes what are the > > constraints? > > Exclusive lock on RBD images will kill any (theoretical) performance gains. > Without exclusive lock, you lose some of RBD features. > > Plus, using 2+ clients with single images doesn't sound like a good idea. > > -- > Piotr Dałek > piotr.da...@corp.ovh.com > https://www.ovhcloud.com > ___ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] ceph block - volume with RAID#0
On 2019-01-31 6:05 a.m., M Ranga Swami Reddy wrote: My thought was - Ceph block volume with raid#0 (means I mounted a ceph block volumes to an instance/VM, there I would like to configure this volume with RAID0). Just to know, if anyone doing the same as above, if yes what are the constraints? Exclusive lock on RBD images will kill any (theoretical) performance gains. Without exclusive lock, you lose some of RBD features. Plus, using 2+ clients with single images doesn't sound like a good idea. -- Piotr Dałek piotr.da...@corp.ovh.com https://www.ovhcloud.com ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] ceph block - volume with RAID#0
My thought was - Ceph block volume with raid#0 (means I mounted a ceph block volumes to an instance/VM, there I would like to configure this volume with RAID0). Just to know, if anyone doing the same as above, if yes what are the constraints? Thanks Swami On Wed, Jan 30, 2019 at 7:56 PM Janne Johansson wrote: > > Den ons 30 jan. 2019 kl 14:47 skrev M Ranga Swami Reddy > : >> >> Hello - Can I use the ceph block volume with RAID#0? Are there any >> issues with this? > > > Hard to tell if you mean raid0 over a block volume or a block volume over > raid0. Still, it is seldom a good idea to stack redundancies on top of each > other. > It will work, but may not give the gains you might expect from it. > > -- > May the most significant bit of your life be positive. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] ceph block - volume with RAID#0
Den ons 30 jan. 2019 kl 14:47 skrev M Ranga Swami Reddy < swamire...@gmail.com>: > Hello - Can I use the ceph block volume with RAID#0? Are there any > issues with this? > Hard to tell if you mean raid0 over a block volume or a block volume over raid0. Still, it is seldom a good idea to stack redundancies on top of each other. It will work, but may not give the gains you might expect from it. -- May the most significant bit of your life be positive. ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] ceph block - volume with RAID#0
Hello - Can I use the ceph block volume with RAID#0? Are there any issues with this? Thanks Swami ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
