Mike Lovell wrote, On 12/23/-28158 02:59 PM:
On 10/23/2009 10:40 PM, Mike Lovell wrote:
exaggerated the problem. when the sync hangs, the drbd module is
almost completely unresponsive. i tried doing a pause-sync and then
resume-sync thinking that it would nudge the module into working but
the commands timeout on talking to the module. i can still cat
/proc/drbd but that is about it until i take down the network
interface and drbd detects the network change. if i then bring back
up the interface, drbd detects it can talk again but then only syncs
a couple of megabytes before stalling again. i have tried every way i
can think of to check the integrity of the network link between the
hosts and everything says they are fine except for during a ping
flood there will be a few out of a couple h
yes, i am using software raid. i guess i didn't try changing that during
my hardware changes. i'll see if i can scrounge up some raid controllers
to test this with.
mike
One other thing I would suggest looking at, which I don't think anyone else
mentioned.
Network equipment in between the mirrors. (switches, cables, crossovers)
What is your MTU?
I experienced a problem _very_ similar with the set I maintained when a 10/100baseT hub/switch was
placed between the units instead of the crossover cable I had been using. The base problem was that
the hub only supported MTUs smaller than 1500, and I was using 6000. If you are using Gig equipment
I would expect a considerably larger maximum MTU, but there _may_ be a limit somewhere there.
hope this helps.
--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter
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