From: Itsuro Oda <oda@valinux.co.jp>
To: linux-kernel@vger.kernel.org
Cc: oda@valinux.co.jp
Subject: Re: [RFC]Kexec based crash dumping
Date: Thu, 19 Aug 2004 08:45:00 +0900 [thread overview]
Message-ID: <20040819083333.76F4.ODA@valinux.co.jp> (raw)
Hi.
It is interesting.
We(*) also make crash dump acording to similer concept.
(*) NTT Data Corporation & VA Linux Systems Japan K.K.
Our main idea is the following.
- prepare a kernel which does only dump real memory to block
device. ("dump mini kernel")
- pre-allocate the memory (4MB is enough) used by the dump mini
kernel and pre-load the dump mini kernel.
- when crash occur exec the dump mini kernel.
- the dump mini kernel stands in and only uses pre-allocated
area.
We made mkexec(mini kernel exec) based on kexec code but
simplify a lot. Mkexec can co-exist kexec and can be kernel
module. We made also "dump mini kernel".
(now i386 only)
We will open our code shortly. (maybe I think)
I think there are many items to be able to cooperate.
Thank you.
--
Itsuro ODA <oda@valinux.co.jp>
next reply other threads:[~2004-08-18 23:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-18 23:45 Itsuro Oda [this message]
2004-08-20 14:28 ` [RFC]Kexec based crash dumping Tonnerre
2004-08-22 23:06 ` Itsuro Oda
-- strict thread matches above, loose matches on Subject: below --
2004-08-17 12:04 Hariprasad Nellitheertha
2004-08-17 22:44 ` Andrew Morton
2004-08-18 12:28 ` Hariprasad Nellitheertha
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