Todd Denniston wrote:
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.
i am essentially using a crossover cable between the boxes and a mtu of
9000. i did try with the standard 1500 and 9000 frame sizes and had
failures with both.
mike
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