Re: [PATCH v5] ramoops: use pstore interface
From: Marco Stornelli
Date: Tue Apr 10 2012 - 04:40:56 EST
Il 09/04/2012 23:42, Luck, Tony ha scritto:
The patch breaks ramoops module unloading. Tony says there's "no
credible end-user case" for this and Marco promptly provided one,
which was ignored.
I'm not sure that I understood Marco's use case. He said:
First of all ramoops was born mainly for debug purpose and
to help the maintainability of a product. I used it in systems
where the uptime (so no reboot) was important. So it can be
very useful for me load the module, gather logs and unload it
for example. A kernel panic is not recoverable so the reboot
is needed but it's not always true for a kernel oops.
In the non-crashed oops case ... aren't all the logs you need
in /var/log/messages?
-Tony
Maybe you right, but it could be useful to have a "single log point"
especially for automatic/semi-automatic log gathering. I'm not sure we
can *always* read from messages in case of non-crashed oops. Sure, it
will be possible after a reboot, but if /var was mounted with tmpfs (on
embedded systems it's possible :)) we have no log.
PS: It's only a brainstorming on all the possible situation :)
Marco
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