I would like to use the Dell PowerEdge R520's on-board 6-port SATA controller which allows up to 4 SATA drives, however the configurator requires you to enable the S110 software RAID for that, which is Windows-only. Does that mean that Linux won't be able to see drives?
I want to use LVM so all that would require is that the drives are individually visible.
I have a Linux gateway with iptables which does routing and port forwarding. I want the port forwarding to happen independent of the routing.
To port forward, I add this to the nat table:
iptables -t nat -A "$PRE" -p tcp -d $GW --dport $fromPort -j DNAT --to-destination $toHost:$toPort
iptables -t nat -A "$POST" -p tcp -d $toHost --dport $toPort -j SNAT --to $SRC
$PRE and POST are actually destination-specific chains that I jump to from the PREROUTING and POSTROUTING chains respectively so I can keep the iptables clean. $SRC is the IP address I'm SNATing to which is different from the gateway IP $GW.
The problem with this setup is that regular routed packets that were not DNATed but happen to go to the same $toHost:$toPort combo will also be SNATed.
I wish to avoid this. Any clever things I can do?
We're a Solaris shop looking at RedHat Enterprise Linux and one of the things we're wondering is if we should keep Veritas Volume Manager + FileSystem or go with LVM+ext3 or RedHat's preferred cluster filesystem solution, GFS.
One of the things we like about Veritas is that it can use Veritas Volume Replicator to have a remote copy of important filesystems. This functionality seems to be missing from RedHat, DRBD doesn't seem to be packaged in RHEL...
So my questions are: