Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars Ellenberg said: > / 2006-11-13 11:05:03 +0100 > \ Ralf Gross: >> | What is warning: ''out of vmalloc space'' >> | >> | For each device, drbd will (try to) allocate X MB of bitmap, plus some >> | constant amount (<1MB). X = storage_size_in_GB/32, so 1 TB storage -> >> 32 >> | MB bitmap. >> | >> | By default Linux allocates 128MB to Vmalloc. For systems using more >> than >> | 4TB, this may cause an issue. >> | >> | If you get the following error message in /var/log/messages, Try a >> Linux >> | 2.6 hugemem kernel. >> | >> | kernel: allocation failed: out of vmalloc space - use vmalloc=<size> >> to >> | increase size. > > options: > * try with a custom built kernel It's working now with default ubuntu kernel (2.6.15-26-server) and vmalloc option set to 256m at boot time. I'm no kernel guru, do I have to expect trouble with this option and 4GB of RAM? > * use amd64 and hope for the best I'm using x86 hardware here, amd64 is no option at the moment. > * use drbd+ > single device up to 16TB, licence includes support. > you still need enough ram, and (not only) we still > recommend 64bit architechture for boxes holding > that much storage. Sorry for that maybe stupid question, but what might be the problem with x86 hardware and 4TB of disk storage? Ralf