Farkas Levente napsal(a):
> hi,
> we've a few 10-20 server in a lan each has 4-8 hdd. we'd like to create
> one big file server on these server hard disks and we'd like to create
> it in a redundant way ie:
> - if one (or more) of the hdd or server fails the whole filesystem still
> usable and consistent.
> - any server in this farm can see the same storage/filesystem.
> it's someting a big network raid5-6... storage where we have about
> 40<partition added to the same network volume. and there is an fs over
> it which hide all internal network raid functionality.
> is there any such solution? i can't find any way to do this on our
> linux servers.
>
what about souch FS blocks path
server->gfs->LVM-> raid1(disc0)-> iscsi
initiator->local-eth0->LANswitch0->remote-eth0->iscsi-target-on_file_server0->LVM->raid(1,5,6,...)->HDD(1,2,3,4,......)
\->LVM-> raid1(disc1)-> iscsi
initiator->local-eth1->LANswitch1->remote-eth0->iscsi-target-on_file_server1->LVM->raid(1,5,6,...)->HDD(1,2,3,4,......)
\-------------||----------------
in souch setup you have no single point of failure
bacause of money you can decrease number of switches (FE to 2 and
connect each server and FS to both of them)
If you do not need concurent access from 1+ servers to one fs
(partition, logicalvolume, same file ...) you do not need gfs ..
--
Petr Klíma
e-mail: qaxi at seznam.cz