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@xxxxxxxxx
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