Re: crashkernel only allowing smaller allocations as kernel version increases

2016-12-08 Thread Robert LeBlanc
OK, after looking through some code, it looks like the behavior was change (back?) to only allocating under 896M with commit 55a20ee7804ab64ac90bcdd4e2868a42829e2784. In order to allocate more RAM than that, you have to specify crashkernel=1024M,high which reserves some RAM in low memory and the re

crashkernel only allowing smaller allocations as kernel version increases

2016-12-08 Thread Robert LeBlanc
I've been trying to capture a core to help in debuging a problem, but it seems that as I go up in kernel versions, I can only allocate less and less memory to crashkernel and with 4.9-rc8 I can't allocate enough to prevent OOM (specifically on CentOS with iSCSI root). I'm seeing the same reduction