Thanks to all On Mon, Jul 15, 2019 at 6:31 PM <n...@li.nux.ro> wrote:
> What's the use case exactly, what are you aiming to achieve? > > Any layer you add will increase latency, NFS especially, even if it's > local. > > > On 2019-07-15 14:56, Fariborz Navidan wrote: > > Thank you for opinions. > > > > Also I would ask you another question. how would difference in mater of > > performance between pure local storage and local nfs storage (local > > drives > > are exported and mounted on local machines)? > > > > On Mon, Jul 15, 2019 at 6:15 PM Ivan Kudryavtsev > > <kudryavtsev...@bw-sw.com> > > wrote: > > > >> ZFS is not a good choice for high IO applications. Use the most simple > >> layering as possible. > >> > >> пн, 15 июл. 2019 г., 18:50 Christoffer Pedersen <v...@vrod.dk>: > >> > >> > Hello, > >> > > >> > ZFS is unfortunately not supported, otherwise I would have recommended > >> > that. But if you are going local systems (no nfs/iscsi), ext4 would be > >> the > >> > way to go. > >> > > >> > On Mon, Jul 15, 2019 at 1:23 PM Ivan Kudryavtsev < > >> kudryavtsev...@bw-sw.com > >> > > > >> > wrote: > >> > > >> > > Hi, > >> > > > >> > > if you use local fs, use just ext4 over the required disk topology > >> which > >> > > gives the desired redundancy. > >> > > > >> > > E.g. JBOD, R0 work well when data safety policy is established and > >> > backups > >> > > are maintained well. > >> > > > >> > > Otherwise look to R5, R10 or R6. > >> > > > >> > > пн, 15 июл. 2019 г., 18:05 <n...@li.nux.ro>: > >> > > > >> > > > Isn't that a bit apples and oranges? Ceph is a network distributed > >> > > > thingy, not a local solution. > >> > > > > >> > > > I'd use linux/software raid + lvm, it's the only one supported (by > >> > > > CentOS/RedHat). > >> > > > > >> > > > ZFS on Linux could be interesting if it was supported by > Cloudstack, > >> > but > >> > > > it is not, you'd end up using qcow2 (COW) files on top of a COW > >> > > > filesystem which could lead to issues. Also ZFS is not really the > >> > > > fastest fs out there, though it does have some nice features. > >> > > > > >> > > > Did you really mean raid 0? I hope you have backups. :) > >> > > > > >> > > > hth > >> > > > > >> > > > > >> > > > On 2019-07-15 11:49, Fariborz Navidan wrote: > >> > > > > Hello, > >> > > > > > >> > > > > Which one do you think is faster to use for local soft Raid-0 > for > >> > > > > primary > >> > > > > storage? Ceph, ZFS or Built-in soft raid manager of CentOS? > Which > >> one > >> > > > > can > >> > > > > gives us better IOPS and IO latency on NVMe SSD disks? The > storage > >> > will > >> > > > > be > >> > > > > used for production cloud environment where arround 60 VMs will > run > >> > on > >> > > > > top > >> > > > > of it. > >> > > > > > >> > > > > Your ides are highly appreciated > >> > > > > >> > > > >> > > >> > > >> > -- > >> > Thanks, > >> > Chris pedersen > >> > > >> >
