From: Hariprasad Nellitheertha <hari@in.ibm.com>
To: linux-kernel@vger.kernel.org, fastboot@osdl.org
Cc: akpm@osdl.org, Suparna Bhattacharya <suparna@in.ibm.com>,
mbligh@aracnet.com, litke@us.ibm.com, ebiederm@xmission.com
Subject: [RFC]Kexec based crash dumping
Date: Tue, 17 Aug 2004 17:34:06 +0530 [thread overview]
Message-ID: <20040817120239.GA3916@in.ibm.com> (raw)
Hi,
The patches that follow contain the initial implementation for kexec based
crash dumping that we are working on. I had sent this to the fastboot mailing
list a couple of weeks ago and this set of patches includes the changes made as
per feedback from Andrew, Eric and others.
Main Idea
- Whenever a panic occurs, reboot to a new kernel using kexec using a small
amount of memory (16MB). The rest of the memory is preserved across the
reboot.
- In the second kernel, the memory contents from the failed kernel is
available as an ELF format file for write-out.
Details on the design and implementation and on how to setup this facility
are available in the first of the patches that follow. The patches have
been made for the 2.6.8.1 kernel.
Kindly review these patches and provide feedback.
Thanks to Martin Bligh and Suparna for the design ideas and to Adam Litke
who hacked up most of the memory preserving reboot code and the dump
device abstraction code.
Regards, Hari
--
Hariprasad Nellitheertha
Linux Technology Center
India Software Labs
IBM India, Bangalore
next reply other threads:[~2004-08-17 12:04 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-17 12:04 Hariprasad Nellitheertha [this message]
2004-08-17 12:05 ` [PATCH][1/6]Documentation Hariprasad Nellitheertha
2004-08-17 12:07 ` [PATCH][2/6]Memory preserving reboot using kexec Hariprasad Nellitheertha
2004-08-17 12:08 ` [PATCH][3/6]Interface for copying the dump pages Hariprasad Nellitheertha
2004-08-17 12:09 ` [PATCH][4/6]Register snapshotting before kexec-boot Hariprasad Nellitheertha
2004-08-17 12:10 ` [PATCH][5/6]ELF format interface for the dump Hariprasad Nellitheertha
2004-08-17 12:13 ` [PATCH][6/6]Device abstraction for linear/raw view of " Hariprasad Nellitheertha
2004-08-17 22:53 ` Martin J. Bligh
2004-08-18 12:29 ` Hariprasad Nellitheertha
2004-08-17 16:27 ` [PATCH][4/6]Register snapshotting before kexec-boot Dave Hansen
2004-08-18 13:43 ` Theodore Ts'o
2004-08-19 11:59 ` Hariprasad Nellitheertha
2004-08-17 16:17 ` [PATCH][3/6]Interface for copying the dump pages Dave Hansen
2004-08-17 16:01 ` [PATCH][2/6]Memory preserving reboot using kexec Dave Hansen
2004-08-17 22:44 ` [RFC]Kexec based crash dumping Andrew Morton
2004-08-18 12:28 ` Hariprasad Nellitheertha
2004-08-20 8:17 ` [Fastboot] " Eric W. Biederman
2004-08-20 8:05 ` [Fastboot] " Eric W. Biederman
2004-08-20 8:27 ` Hariprasad Nellitheertha
-- strict thread matches above, loose matches on Subject: below --
2004-08-18 23:45 Itsuro Oda
2004-08-20 14:28 ` Tonnerre
2004-08-22 23:06 ` Itsuro Oda
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