Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Fri, Jul 27, 2007 at 10:35:41AM +0300, Igor Anishchuk wrote: > Hello Lars, others! > > I've found the latest kernel release where everything works well. > It is 2.6.21.6. the default settings for vm.dirty_ratio and vm.dirty_background_ratio have been cut down considerably in 2.6.22. this should not have any impact on drbd, at least not on drbd 8, also, we have deployments where we hand-tuned to even less, and it is running fine. but it is still possible that you hit some vm deadlock. to verify whether this would affect you, have a look into /proc/sys/vm/dirty_ratio and .../dirty_background_ratio, defaults before 2.6.22 have been 40 and 10, now 10 and 5, respectively. also, if you can setup sysrequest, and then trigger a task dump of "hanging" processes when it "freezes", might help to understand what is going on. -- : Lars Ellenberg Tel +43-1-8178292-0 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Vivenotgasse 48, A-1120 Vienna/Europe http://www.linbit.com : __ please use the "List-Reply" function of your email client.