makedumpfile-1.2.6: Extract vmcoreinfo from /proc/vmcore for Xen
Ken'ichi Ohmichi
oomichi at mxs.nes.nec.co.jp
Thu Jun 5 21:25:44 EDT 2008
Hi,
makedumpfile version 1.2.6 is released.
Please test it. Your opinions/comments are welcome.
Changelog:
o New feature
- Extract vmcoreinfo from /proc/vmcore for Xen (by Itsuro ODA)
- Add linux-2.6.25 support
- Add '--help' option
o Bugfix
- Fix the error code of Xen extracting feature (by Akio Takebe)
- Fix the ia64 problem that invalid data is copied around overlapping
segments.
o Code Cleanup
- make create_dump_bitmap() simple
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. 1.2.6) 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-1.2.6.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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