Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, I'm looking for some figures: What are the memory requirements/guidelines for DRBD resources? What are the maxima for normal operation, sync, verify ? Is it dependent on the size of the replicated device? Does the requirements increase lineary with each resource ? I'm playing with a Debian lenny/unstable system pair (HP DL360 G5, 8G RAM) with linux 2.6.18.6 (or 2.6.26.1), xen 3.2.1, DRBD 8.3.0, hosting 13 DomU - each with 2 DRBD-Devices (4G disk+512M swap) allocated from LVM LVs each separately replicated with DRBD. The Dom0 got a fixed amount of memory (1 G via grub menu.list xenhopt=dom0_mem=1024M) and I've seen the situation that the Out-of-memory killer strikes on the node A if all DRBD resources are synced (all at once) from node A to initially connected node B. Nothing else besides an small apache is running on the Dom0, in disconnected mode there is over 600M available on node a. If I sync the resources one by one the OOM can be prevented. So I'm looking for a solid based way to size the RAM of the Dom0 .. Thanks for any hints, WR, Bruno