thanks,i know a little more. but i do not understand fully. distrubute filesystem is more understandable. specially,,for SAN(iscsi,fc) it is hard to share luns between nodes(not reliable), even use LVM,CLVM.
would you explain it ( SAN case)?and it is hard to connect 'local directory' with distrbuted repo. thanks. At 2013-02-27 17:55:45,"Gianluca Cecchi" <gianluca.cec...@gmail.com> wrote: >On Wed, Feb 27, 2013 at 10:44 AM, bigclouds wrote: >> there is a sentense 'Implements a distributed image repository over the >> supported storage types (local directory, FCP, FCoE, iSCSI, NFS, SAS) >> ' on http://www.ovirt.org/Architecture. >> >> what is "distributed image repository"? >> >> thanks. > >Example >I have a test environment where a Host is connected to several FCP LUNs. >Each LUN becomes a storage domain for this host and the other hosts in >the same cluster. >So I have many VMs whose images resides on different storage domains >(and so different LUNs). >I can move a disk of a VM from a storage domain to another one. >I think you can also have a mixed situation where a two disks' VM has >one disk on a storage domain and the other one in another. > >So I think it is to be explained this way the "distributed image repository". > >And also "distributed" in the sense of different storage domain types, >even if I think at this time one DC cannot have a mix of different >storage domain types... > >Gianluca
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