Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, Jun 23, 2004 at 04:43:36PM -0400, James W. Brinkerhoff wrote: > On Wednesday 23 June 2004 03:28 pm, Helmut Wollmersdorfer wrote: > > James W. Brinkerhoff schrieb: > > > I upgraded to drbd 0.6.12 and it seems my performance has dropped like a > > > stone. System load runs very high (5.0 or above) and IO operations > > > block often. > > > > Try > > > > rm /var/lib/drbd/* > > > > before start. unwise... only do this when you know what you are doing. it _cannot_ have any effect on sync speed (unless you had a time skew, and the drbd.conf.parsed is outdated...) > > I needed this after upgrade 0.6.10 -> 0.6.12 to get a nice running drbd > > at full speed of the link. > > *NOTE* Sorry if there are multiple copies of this message... My email client > refused to send them with the proper from address. > > Did you also get those kernel errors? I have 2 files in there... > drbd.conf.parsed (which has the same info as /etc/drbd.conf) and drbd0 which > is some binary file... I'm a little reluctant to blow that away > without knowing what it is... Both are dated from monday when I tried to > solve my problem by increasing tl-size (which did away with some of the > kernel errors, but not all and didn't solve the speed issues). don't remove the binary file(s) in there. that is drbd-0.6 persistent meta data. wizards only... > This isn't speed on a Full Sync, but during normal writes... the code change is that in 0.6.12 "write-hints" are sent non-blocking. so sometimes they may be sent with a little delay. before, kernel threads like pdflush or kupdated could have blocked on this, and hang the system for a long time under certain timing conditions. overall timing has changed, and some things made more noisy (e.g. ko=some number). search the archives around the release of 0.6.12 for more detail. lge