Re: [concept & "good taste" review] persistent store

David Howells
2010-12-21T10:13:32Z

Huang Ying <ying.huang@intel.com> wrote:

> > > - for OOPS messages will not cause system panic, it will go to disk and
> > > will not use up the persistent storage.
> >
> > You can't guarantee that an oops didn't just kill your ability to actually
> > write your syslog to disk or out across the network.
>
> I do not need to guarantee that. If the OOPS message can not be written
> to disk, just keeping it in persistent storage, and that is the very
> value of persistent storage. But for OOPS can go to disk safely, we do
> not need to waste persistent storage for it.

My point is how do you know an oops message will actually manage to get to
disk? There's a userspace program (syslogd) between the kernel log and the
disk or network.

David