Hi developers,
I know that the following question may not be relative to Ceph but
this confuses me a lot.
I am testing the function of re-exporting nfs by command "dd" without
using buffer.
That means I would like my data to be written to Ceph DFS directly
without passing by the buffer of client or nfs-client.
Here is my test architecture. Hope you could understand what I am
trying to express.....:p
------------------------------------------------------------------------------
nfs ceph protocol
Client <------------>Ceph-Client <-------------------> Ceph DFS
------------------------------------------------------------------------------
I used the command "dd if=/dev/zero of=/mnt/ceph/test bs=64k
count=10000 oflag=dsync"
My purpose was to write the data from the client to Ceph DFS through
Ceph-client.
Ceph DFS was mounted by Ceph-client using Ceph protocol and
Ceph-client was mounted by client using nfs protocol.
I know that my dd command with argument oflag=dsync would write the
data to Ceph-client without using buffer on the client.
But I want my Ceph-client could also just pass the data to Ceph DFS
without using its buffer.
So.....is there any way I can run my scenario?
Or in other words, is there any method I can assure that Ceph-client
won't do the buffer task itself?
Thank you~~
--
Best Regards,
Sylar Shen
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