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List: kexec
Subject: makedumpfile-1.2.5: Follow the changes of page flags
From: oomichi () mxs ! nes ! nec ! co ! jp (Ken'ichi Ohmichi)
Date: 2008-03-28 9:44:21
Message-ID: 47ECBDF5.4060200 () mxs ! nes ! nec ! co ! jp
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Hi,
makedumpfile version 1.2.5 is released.
Please test it. Your opinions/comments are welcome.
Changelog:
o New feature
- follow the changes of page flags.
To follow the changes of page flags in linux kernel, a new
makedumpfile can get these values from the vmcoreinfo data.
o Code Cleanup
- delete unnecessary flag.
- add create_dumpfile() for readability.
o Bugfix
- fix error return values of vtop().
Explanation of makedumpfile:
To shorten the size of the dumpfile and the time of creating the
dumpfile, makedumpfile copies only the necessary pages for analysis
to the dumpfile from /proc/vmcore. You can specify the kind of
unnecessary pages with dump_level. If you want to shorten the size
further, enable the compression of the page data.
Download:
You can download the latest makedumpfile(ver. 1.2.5) from the following URL.
Details of the change are written on the CVS page of the following site.
https://sourceforge.net/projects/makedumpfile/
Method of installation:
You can compile the makedumpfile command as follows;
1. "tar -zxvf makedumpfile-1.2.5.tar.gz"
2. "cd makedumpfile"
3. "make; make install"
Usage:
makedumpfile [-c] [-E] [-d dump_level] [-x vmlinux] dump_mem dump_file
Example:
If you want to exclude pages filled by zero, cache pages, user pages
and free pages and to enable compression, please execute the following
command.
# makedumpfile -c -d 31 -x vmlinux /proc/vmcore dumpfile
Thanks
Ken'ichi Ohmichi
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