Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello Lars, so these options do not remove flushes from upper layers, but only control additional, drbd-internal flushes? Best Regards Matthias Lars Ellenberg schrieb: > On Thu, Aug 14, 2008 at 11:23:39AM +0200, Matthias Weigel wrote: >> Hello, >> >> where exactly do disk flushes happen without this option? >> - per IO? > > "disk-flushes" per drbd-barrier, which in turn are inserted between > reorder-domains to keep write ordering on the nodes in proper order. > > "md-flushes" for every meta data access, i.e. al update or bm update. > >> With no-disk-flushes and no-md-flushes active, does a flush happen, >> when i say "sync"? > > different concept. > different levels of "flush". > so, the answer is "no", but probably the > answer to what you mean would actually be yes. > > sorry, this is not easily put into two sentences. >