I had two servers that always run at 100Mbps, which was OK but whenever I turned them to GlusterFS bricks, things became obviously not working.
It sounds like simple, right? Yea, I tried ethtool to force them running on GigE, didn’t work; I tried to change to another switch port, didn’t work … after blocking myself from the servers for several times (ethtool!), I finally decided to change to use 2nd NIC on those two servers. They were good, running at GigE immediately after plugging into the switch.
Then today, I was thinking of doing cabling in the server room, since those 1st NIC still have cables on them, I decided to move those cables to the 2nd NICs which means I don’t have to change notes on switch ports. Well, interesting things happened – those two port run at 100Mbps again …
Well, everyone knows where the problem now, right? I swapped out those two cables and everything looks perfect, I think I will switch back to 1st NIC later on but that’s not a big deal.
I hate cables.
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