[DRBD-user] Error on primary server copied to secondary too?

Carson Gaspar carson at taltos.org
Fri Nov 10 17:09:40 CET 2006

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 wrote:
> 
> say, some "invalid" data is written to disk by the file system,
> (because of memory corruption, implementation error,
> the shade of the moon, whatever).
> 
> how could the block device (drbd) know that this data is "invalid"?
> how should it go about "fixing" it, in case it could?

Checksums all the way down. Solaris' ZFS is pretty cool that way ;-). 
But I'm not sure that it would be a good idea for drbd to start doing 
things like that (although ZFS on top of drbd would be cool...perhaps 
someday).

-- 
Carson




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