On 19/10/15 23:18 Christoph R. Murauer wrote: > Hello ! > > I readed the FAQ 4.8 about partioning my drive but have a little problem > of understanding. > > The machine has 32 GB physical RAM, the disc is a 256 GB SSD (yes, I know, > I should not use swap on a SSD) and, I installed the latest snapshot from > yesterday. So far so good. > > Disklabel likes to create in auto layout b: swap with 23,2 GB and e: /var > with 30,2 GB. > > If I follow the FAQ, then core dumps should not work. I could resize swap > and /var to have the same (or bigger size) as the physical RAM which is > also no problem. My question - or better the things I don't understand (I > found no informations and also had no panic message till now) are, which > size had a core dump and, will core dumps work, if swap (on /var is enough > place to copy the core dump file from swap to /var/crash after a reboot) > is smaller then the physical RAM ? My question is meaned, that swap is > only used for core dumps - nothing more.
The dumps have the size of the physical memory, perhaps a wee bit smaller. The save dir does not need to be on /var, you can replace /var/crash with a symlink that points to, say, a dir in /home or on some other partition. In theory savecore can compress the dump, I've never tried it, and I don't know how much it buys. Rtfm savecore(8). If you want to test it, don't need to wait for a panic. Rtfm ddb(4) how to trigger the kernel debugger, once there just type boot crash. And wait, with that machine it will take a while, I guess. oh, and: http://marc.info/?l=openbsd-misc&m=135672896123632&w=2 Never worked for me though, it didn't recover the dumps. One day I'll figure out why. tilo
