Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Tue, Apr 14, 2009 at 04:03:05PM -0700, Mike Sweetser - Adhost wrote: > Hello: > > Is it true that you have to bring the resource down and up after adding > no-disk-flushes or no-md-flushes to the drbd.conf? Doing an adjust > isn't sufficient? Adjust is supposed to be sufficient to enable those parameters. Beware of changing disk parameters on a node in Primary role, though, as that does a detach/attach sequence. And until very recently, we required a full resync after a detach on a Primary. Now we lessend that to a resync of the area covered by the activity log, which still can be "a lot". So the general recommendation is do adjust disk parameters while being in Secondary role, where a detach/attach sequence only leads to a very quick resync of possibly modified blocks during that timeframe. Usually, to change disk parameters on both nodes on a live DRBD, you do either a switchover, or "take it down" for a short period (in the sense of at least deactivating it into Secondary role). -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed