makedumpfile-1.1.6: linux-2.6.22 support
Akira Imamura
aimamura at redhat.com
Fri Aug 17 18:15:21 EDT 2007
Hi Ohmichi-san,
I'm sorry for my late reply.
> o Some cleanups
> - Cleanup the description for '--message-level' by Akira Imamura.
Thank you for applying it. I verified the latest package.
Thanks,
Akira Imamura
>
> Hi,
>
> makedumpfile version 1.1.6 is released.
> Please test it. Your opinions/comments are welcome.
>
> 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.
>
>
> Changelog:
>
> Changelog:
> o linux-2.6.22 support.
> The method for getting the member offset of "page.mapping" is
> applied for linux-2.6.22.
> Old makedumpfile assumed that there was "mapping" in the first
> union in structure "page". But on linux-2.6.22, there is "mapping"
> in the second union, because "_mapcount" and structure for slub
> are packed in the first union. Then, new makedumpfile gets the
> offset by searching "mapping" in each union.
>
> o Change the check method of free_pages for linux-2.6.21 or later.
> On linux-2.6.21 or later, the number of free_pages (vm_stat[0])
> is sometimes different from the one of the pages listed in
> "free_area" actually, because the former is flushed asynchronously.
> Then, new makedumpfile doesn't check these numbers, and confirms
> the free_pages only by checking whether the list "free_area" is
> not corrupted.
>
> o Some cleanups
> - Cleanup the description for '--message-level' by Akira Imamura.
> - Cleanup the structures DumpInfo and vm_table.
> - Cleanup the dwarf method.
> - Cleanup page_to_pfn() method.
>
>
> You can download the latest makedumpfile(ver. 1.1.6) 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-1.1.6.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
>
More information about the kexec
mailing list