[DRBD-user] online verification really bogs things down

Gregor Mosheh gregor at hostgis.com
Sat Jul 19 22:02:27 CEST 2008

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

Online verification - very neat. Combined with the realtime write 
verification, this should completely eliminate the possibility of the 
data ever not being identical.

However, running an online verification is really intensive, as was 
warned in the manual. So intensive is it, that the rest of the system 
comes near to useless.

Does there exist a way to renice it or ionice it to reduce the load it 
causes, or to pause it? For example, what drbd.conf directives would be 
relevant to the verification speed as opposed to the sync speed?

If there is not a mechanism for doing this, should I file an enhancement 

Gregor Mosheh / Greg Allensworth    BS, A+, Network+, Security+, Server+
System Administrator, Lead Programmer
HostGIS development & hosting services, http://www.HostGIS.com/

"Remember that no one cares if you can back up,
  only if you can restore." - AMANDA

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