[DRBD-user] data-integrity-alg in dual-Primary setup

Lars Ellenberg lars.ellenberg at linbit.com
Fri Sep 17 21:50:25 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.

On Fri, Sep 17, 2010 at 05:28:44PM +0200, Fabrice Charlier wrote:
> On 09/17/2010 02:40 PM, Lars Ellenberg wrote:
> >Maybe disable the drbd level checksum, and trust the TCP checksum.
> And take the risk of corrupt one mirror? ;-)
> >>If not, are you planning to implement this feature?
> >
> >Maybe.
> >But it does not have particular priority.
> >Maybe we rather wait for the VM and VFS layer to fix it for us.
> If somebody else implement this feature,
> are you ready to merge it with the main branch of drbd?

If it is "correct", why not.

It is not possible in protocol A.
B and C should be doable.

One of the interesting aspects is that
write ordering may be violated,
without anyone knowing it.

BTW, feature sponsoring may be an option, too ;-)

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

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