Messages in this thread | | | Date | Thu, 19 Aug 2004 08:45:00 +0900 | From | Itsuro Oda <> | Subject | Re: [RFC]Kexec based crash dumping |
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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>
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