On 6/12/13 3:10 PM, Peter Wemm wrote:
On Wed, Jun 12, 2013 at 1:39 PM, Dimitry Andric <d...@freebsd.org> wrote:
On Jun 12, 2013, at 22:30, Alexander Leidinger <alexan...@leidinger.net> wrote:
I try to update from a pre-clang world (r242511M) to "now" (r251618M).
The resulting kernel boots, but while starting some jails (with ezjail
from ports, so fairly late in the boot process) I get a kernel panic
(IIRC zfs trying to access page 0).
If you are running on i386, it might be a stack overflow? Try
increasing the stack a little, it might help in that case.
For i386 I'd be more inclined to suspect KVA exhaustion.
For non-PAE, as a shot in the dark, increase
options KVA_PAGES=384
.. the default is 256 for PAE. that increases kernel KVA from 1GB to 1.5GB.
For a PAE system, this number is multipled by 2, so a corresponding
change is 512 -> 768.
This is just a shot in the dark. If this is amd64, then never mind,
KVA_PAGES is meaningless there.
Is there some way we can get a pps ratelimited (or even one-time)
message when the kva is almost exhausted?
Could that help people?
--
Alfred Perlstein
VP Software Engineering, iXsystems
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