makedumpfile-1.1.5: Xen support

DISCUSSION Ken'ichi Ohmichi 2 participants 2 messages Jul 27, 2007

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Ken'ichi Ohmichi

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2007-07-27 09:12 UTC #0 lore raw

Hi,

makedumpfile version 1.1.5 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:
o Add a new feature that extracting the part of xen hypervisor and domain-0 from /proc/vmcore. In most cases under xen environment, it is enough to analyze a cause of system crash.
The patch was provided by Itsuro Oda.
Usage:

    # makedumpfile -E --xen-syms xen-syms /proc/vmcore dumpfile

o Add a new option '-f' to overwrite existing dumpfile. The patch was provided by Bernhard Walle.

o Add a new option '--message-level "message-level"'.
A user can specify multiple message types by setting the sum of each message type for "message-level". The default value is '7' (Print the progress indicator, common messages, and error messages).
0: Print nothing.
1: Print the progress indicator.
2: Print common messages.
4: Print error messages.
8: Print debugging messages.

o Fix the problem that makedumpfile complains about overlapping memory segments. On some machines (ia64, discontigmem, and specific machine), one pglist_data has overlapping memory segments with other nodes. The existing makedumpfile complains about them, and it fails. To fix the problem, overlapping memory segments is separated by node_memblk. The idea was provided by Bernhard Walle.

o Rename makedumpfile's config file to "vmcoreinfo file".
http://lists.infradead.org/pipermail/kexec/2007-July/000349.html

o Change the method for getting the kernel's OSRELEASE if generating a vmcoreinfo file. A new makedumpfile gets it from a vmlinux file.
http://lists.infradead.org/pipermail/kexec/2007-July/000319.html

o Some cleanups
- Cleanup the linux-version checking method.
The patch was provided by Neil Horman.
- Cleanup README for the building problem.
- Cleanup the method for getting the offset of page.mapping.
- Cleanup the method for reading a vmcoreinfo file.

You can download the latest makedumpfile(ver. 1.1.5) 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-1.1.5.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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Neil Horman

2007-07-27 11:14 UTC #1 lore raw

Quoted 6 lines · Ken'ichi Ohmichi

Hi,
makedumpfile version 1.1.5 is released. Please test it. Your opinions/comments are welcome.

Quoted 7 lines

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.

Hey, this is too late to take into 5.1, but I'll hapily take it for 5.2 Neil

Quoted 67 lines

Changelog:
o Add a new feature that extracting the part of xen hypervisor and domain-0 from /proc/vmcore. In most cases under xen environment, it is enough to analyze a cause of system crash.
The patch was provided by Itsuro Oda.
Usage:
    # makedumpfile -E --xen-syms xen-syms /proc/vmcore dumpfile
o Add a new option '-f' to overwrite existing dumpfile. The patch was provided by Bernhard Walle.
o Add a new option '--message-level "message-level"'.
A user can specify multiple message types by setting the sum of each message type for "message-level". The default value is '7' (Print the progress indicator, common messages, and error messages).
0: Print nothing.
1: Print the progress indicator.
2: Print common messages.
4: Print error messages.
8: Print debugging messages.
o Fix the problem that makedumpfile complains about overlapping memory segments. On some machines (ia64, discontigmem, and specific machine), one pglist_data has overlapping memory segments with other nodes. The existing makedumpfile complains about them, and it fails. To fix the problem, overlapping memory segments is separated by node_memblk. The idea was provided by Bernhard Walle.
o Rename makedumpfile's config file to "vmcoreinfo file".
http://lists.infradead.org/pipermail/kexec/2007-July/000349.html
o Change the method for getting the kernel's OSRELEASE if generating a vmcoreinfo file. A new makedumpfile gets it from a vmlinux file.
http://lists.infradead.org/pipermail/kexec/2007-July/000319.html
o Some cleanups
- Cleanup the linux-version checking method.
The patch was provided by Neil Horman.
- Cleanup README for the building problem.
- Cleanup the method for getting the offset of page.mapping.
- Cleanup the method for reading a vmcoreinfo file.
You can download the latest makedumpfile(ver. 1.1.5) 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-1.1.5.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

Signature · 13 lines

/***************************************************
 *Neil Horman
 *Software Engineer
 *Red Hat, Inc.
 *[email protected]
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