Panic: attempted pmap_enter on 2MB page

2010-10-06 Thread Kurt Alstrup
Up front disclaimer: I may very well be wrong on this.. This looks like a pmap bug I ran into a recently on a pre-release of 8.0. It's still present in stock 8.0, but I have not looked at 8.1 (see disclaimer). The bug was caused by a combination of a shortcut in pmap_unuse_pt() which didn't wipe

Re: Panic: attempted pmap_enter on 2MB page

2010-10-06 Thread Alan Cox
Dave Hayes wrote: Alan Cox writes: [snip] Is this problem reproducible? I don't recall if you mentioned that earlier. Sort of. It seems that everytime I generate a bootable FreeBSD ISO, a die is rolled. If it comes up a certain number then it crashes, otherwise it's fine. ;) My

Re: Panic: attempted pmap_enter on 2MB page

2010-10-06 Thread Dave Hayes
Alan Cox writes: > When you build your kernel for this ISO are you increasing the value of > NKPT? No. I was under the impression that this value auto-tunes on amd64, is that correct? -- Dave Hayes - Consultant - Altadena CA, USA - d...@jetcafe.org >>> The opinions expressed above are entirely

Re: Panic: attempted pmap_enter on 2MB page

2010-10-06 Thread Alan Cox
Dave Hayes wrote: Alan Cox writes: When you build your kernel for this ISO are you increasing the value of NKPT? No. I was under the impression that this value auto-tunes on amd64, is that correct? After initialization, yes. However, the kernel starts out with just NKPT page ta

ZFS root pool backup and recovery

2010-10-06 Thread Marcus Reid
Hi, The process of creating a backup of the ZFS root pool on Solaris is simple and straightforward: http://docs.sun.com/app/docs/doc/819-5461/ghzwu?l=en&a=view So is restoring it on bare metal: http://docs.sun.com/app/docs/doc/819-5461/ghzur?a=view Has anybody done something similar on