[DRBD-user] Is rate parameter for all resources or can be configured for each resource ?

Hervé Gautier herve.gautier at thalesgroup.com
Fri Apr 23 12:14:42 CEST 2010

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

Lars Ellenberg a écrit :
> On Fri, Apr 23, 2010 at 11:03:11AM +0200, Hervé Gautier wrote:
>> Lars Ellenberg a écrit :
>>> That's not how it works.  Its not a global limit, but a common default
>>> inherited by those resourced that don't override it locally.
>>> I see that it could be useful to have the global limit you describe.
>>> But we don't have it.
>> Thank Lars !
>> So if I understand well, It is necessary to configure the rate per
>> resource to be sure to respect the available network bandwidth.
>> If the common rate is used, for example with 4 resources, the
>> defined bandwidth rate will be (4 x common_rate) in case of
>> synchronization of the 4 resources.
>> Is that right ?
>> It is just to be sure how it works.
> You could serialize resync of resources.
> ( see the "after" statement in the syncer section )

Ok !
Thank to point me this parameter !

> And you can adjust the sync rate at any time,
> so you could monitor, and
> 	drbdsetup $minor_number syncer --rate ${whatever}M
> appropriately, following any simple or complex policy, taking into
> account current application load and network load and what not.


Thank for all these information !


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