[DRBD-user] Bad network connection causing DRBD to freeze

Lars Ellenberg lars.ellenberg at linbit.com
Mon Feb 2 14:02:42 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Mon, Feb 02, 2009 at 01:56:30PM +0100, Tomasz Chmielewski wrote:
> Lars Ellenberg schrieb:
>
>>> If the packet loss on the network confinus for a longer periode this  
>>> disconnect-reconnect cycle repeats several times. The result is that 
>>> a disturbance in the network connection between the servers  
>>> basically supends all running services which depend on DRBD.
>>>
>>> To work around the problem I've now put DRBD into stand alone mode.
>>> Is there anything else I can do about this?
>>
>> fix the network link?
>>
>> well, seriously: what would you like DRBD to do?
>
> Don't postpone IO during bitmap exchange.
>
> However, I guess that would seriously complicate this process?

well, yes, it would make it a bit more difficult.

and, unfortunately, it would not help at all
in this particular situation:
if the bitmap does not get through,
because of packet loss, IO will not go through either.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
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