Hi,
On 6/4/19 10:12 AM, CUZA Frédéric wrote:
Hi everyone,
We want to migrate datas from one cluster (Hammer) to a new one
(Mimic). We do not wish to upgrade the actual cluster as all the
hardware is EOS and we upgrade the configuration of the servers.
We can’t find a “proper” way to mount two rbd images from two
different cluster on the same host.
Does anyone know what is the “good” procedure to achieve this ?
Just my 2 ct:
the 'rbd' commands allows specifying a configuration file (-c). You need
to setup two configuration files, one for each cluster. You can also use
two different cluster names (--cluster option). AFAIK the name is only
used to locate the configuration file. I'm not sure how well the kernel
works with mapping RBDs from two different cluster.....
If you only want to transfer RBDs from one cluster to another, you do
not need to map and mount them; the 'rbd' command has the sub commands
'export' and 'import'. You can pipe them to avoid writing data to a
local disk. This should be the fastest way to transfer the RBDs.
Regards,
Burkhard
--
Dr. rer. nat. Burkhard Linke
Bioinformatics and Systems Biology
Justus-Liebig-University Giessen
35392 Giessen, Germany
Phone: (+49) (0)641 9935810
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
