I have a client with the following setup:
__________________
| |
| Firewire storage |
|__________________|
| |
| |
________|_ _|________
| | | |
| Server A | | Server B |
|__________| |__________|
This is not an NFS mount, the box has multiple SCSI buses.
Both Server A and Server B mount the same filesystem and my client says
that when files are written by Server A the only way they can be seen on
Server B is to unmount the filesystem and re-mount it. I did suggest using
the sync option when mounting the filesystems and also trying the sync
command but this didn't help.
Effectively we need to lose the linux filesystem buffers (and yes, all the
efficiency that goes with that) I think but I don't know how to do that.
Possibly this could be done periodically on each server to allow some
level of filesystem efficiency but I'm guessing this would be more
trouble.
If this isn't easy I'm going to have to suggest NFS... wonder if you can
do NFS over SCSI? I've heard of TCP/IP over SCSI I think. I do not know if
the Servers can see each other on the SCSI buses, certainly not visible in
/proc/scsi areas so my guess is no.
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