Eric W. Biederman wrote: > Let me put this concrete proposal on the table. > > The problem: > > With the current set of crashkernel= options we are asking the > distribution installer to perform magic. Moving as much of this logic > into a normal init script for better maintenance is desirable. > > My proposal: > > Implement crashkernel=max which reserves as much memory as is > reasonable for a crash kernel, without seriously affecting stability, > performance, and reliability. > This is almost exactly what I want with crashkernel=auto.... So there's no big difference, except the name. > As an initial approximation I would use a 32nd of low memory. > Hmm, I think Bernhard's proposal is fine for this case, i.e. we can introduce a new syntax, "crashkernel=>>X" which means we reserve 1/2^X of system memory. What do you think? > In addition implement: > > /sys/kernel/crash_size > > That can be written to (with enough privileges when no crash kernel is > loaded) reduce the amount of memory reserved by the crash kernel. > Yeah, this is nice! Thanks.
