Hi,
Sorry if this has been answered before, I did take a quick delve but
couldn't find explicitly an answer.
We are looking at setting up AFR over initially a 10Mb point to point link
with ping times ~ 70ms return. This will progress up to 100Mb as required.
** Hope this comes out ok apologizes if it doesn't **
[ Internet ] ---> [ CPU ] -> ( glusterfs client )
( glusterfsd primary
storage)
|
| { 10Mbit
point to point / AFR translator}
|
( glusterfsd
secondary storage)
My questions are ;
1. When the process on CPU WRITES to the glusterfs, does it wait until the
write is confirmed @ secondary storage before return ?
( will we see our software systems block until this happens, or does the
write hit the glusterfs client, it returns OK and the software continues )
2. When the process on CPU READS, will it only attempt to read from the
primary storage, UNLESS for some reason it is un-available ( in which case
it would switch to secondary storage )
( or will it try to combine read from both PRIMARY and STORAGE to serve the
requirements for glusterfs -> CPU ? )
3. Assuming AFR is working correctly between the primary and secondary
storage, is it possible to setup a 'read/only' translator off the secondary
storage ? :
..........................
| { 10Mbit point to point / AFR
translator}
|
( glusterfsd secondary storage)
[ CPU ] <---( glusterfs client )
Bearing in mind that the glusterfsd primary and secondary will be
both utilising unify translator also ( otherwise we could just mount the FS
)
4. Sorry this one is probably quite obvious but I couldn't find an answer to
it ( or is it too obvious !! ) Is this topology OK ?
[CPU] [CPU] [CPU]
( glusterfs ) ( glusterfs ) ( glusterfs)
| | |
----------------------------------------
( glusterfsd primary storage)
So several CPU/Glusterfs clients hit one glusterfsd direct, rather than
having to stuff say a NFS client in front of the glusterfs to serve the
clients
--
Paul Arch
---------------------------
Esidium Group Pty. Ltd.
Ph: (08) 6461 4230
Fax: (08) 6461 4238
http://www.esidium.com.au
---------------------------
