[PATCH 0/4] extract vmcoreinfo from /proc/vmcore for Xen

Itsuro ODA oda at valinux.co.jp
Mon Mar 31 00:24:57 EDT 2008


The following patchset is to support extracting vmcoreinfo from
/proc/vmcore for Xen.

This is for xen-3.2.0.

[PATCH 1/4] patch for xen hypervisor (xen-3.2.0)
[PATCH 2/4] patch for linux (linux-2.6.18-xen-3.2.0)
[PATCH 3/4] patch for kexec-tools (kexec-tools-testing-20080324)
[PATCH 4/4] patch for makedumpfile (makedumpfile-1.2.4)

--- background ----------------------------------------------------
* what the makedumpfile is:
  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.
* Xen extraction 
  makedumpfile also has a feature that extracting the part of
  xen hypervisor and domain-0 from /proc/vmcore taken under xen
  environment. In most cases under xen environment, it is enough to
  analyze a cause of system crash.
* extract vmcoreinfo from /proc/vmcore
  makedumpfile 1.2.0 supports to extract the vmcoreinfo data from
  /proc/vmcore and uses it for dump filtering. (for a vmcore taken
  under the native environment.)

note: makedumpfile command and crash command needs some fixes for
  xen-3.2.0 (which are independent of vmcoreinfo). I will post
  these fixes near future.

Itsuro ODA <oda at valinux.co.jp>

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