[DRBD-user] drbdadm - Changing DRBD online

Lars Ellenberg lars.ellenberg at linbit.com
Sun Mar 3 20:58:06 CET 2013

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


On Wed, Feb 20, 2013 at 03:41:37PM +0100, Mark Busuttil wrote:
> Hi,
> 
> Im currently performing a number of test to determine the best drbd
> configuration on our setup. Since this system is live, im using the drbdadm
> commands to change values such as:
> 
> net-options protocol
> net options sndbuf-size
> net-options uplug-watermark
> 
> I would like to confirm if these options need to be executed on both the
> primary and standby in order to take effect on both nodes?
> 
> I can confirm that the protocol settings are copied to the standby since i
> can confirm from /proc/drbd, however im unable to verify the rest of the
> options..
> 
> Is there a way i can verbose the running configuration for this option ? Or
> can someone confirm if the changes using drbdadm are always copied to the
> members ?

Most (but not all) options are communicated and set accordingly.

You can always check the current in-kernel settings with drbdsetup show.


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



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