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, Mar 12, 2008 at 03:38:34PM +0000, drbd at bobich.net wrote: > What version of DRBD are you using? What does drbd.conf say? Have you > verified latency and throughput on your Gb interfaces independently of > DRBD? Have you verified idle sync speed with no other operations happening > on the DRBD devices (without them being mounted)? What does /proc/drbd say > it's speed is? What distro are you using? Did you compile from source or > get the rpms from a repository? Ah yes, versions. This is on Ubuntu 7.10, which is only up to 8.0.3. It's from the deb except for the kernel module, which is compiled from a source deb. The interfaces are fine. Using drbdsetup to up the syncer rate looks to have just sped the process, although what /proc/drbd shows for speed - well, it looks like that's an average over time, so it's still quite low but rising. The DRBD devices aren't currently mounted. > No, I've tested it with devices/volumes up to hundreds of GB. One thing > that did cause me problems is an upgrade from 8.0.8 to 8.0.11+, though. The > performance went through the floor, probably to similar levels that you are > seeing. I'm back to 8.0.8 and it's all working happily again. What version > of DRBD are you running? Try downgrading to 8.0.8 (including the kernel > module) and see if the problem goes away. Thanks for the reassuring report. Is 8.0.8 golden, then? Or is it just that I should not have followed the draft manual's example of not setting a syncer rate before the initial sync? Best, Whit