makedumpfile: Add erased information in compressed kdump file and ELF formatted dumpfile
Mahesh Jagannath Salgaonkar
mahesh at linux.vnet.ibm.com
Tue Sep 13 07:16:45 EDT 2011
On 09/12/2011 11:54 PM, Dave Anderson wrote:
> Hi Mahesh,
> Now that this feature is in makedumpfile-1.4.0, I presume that you
> have crash utility "warning" patches underway?
Yup. I am working on it, will post the patches very soon.
> Also, can you confirm that compressed or kdumps with (or without)
> eraseinfo data can still be handled with no problem by the current
> version of the crash utility? I'm not talking about the ramifications
> of whatever kernel data may have been erased, but whether the changes to
> the dumpfile headers could cause a problem. I'm presuming that the
> compressed kdump eraseinfo data would be invisible to an older version
> of crash, and that ELF kdump eraseinfo would just show up as an (unused)
> ELF note -- but I just want to make sure.
Yes. The changes to dumpfile header and addition of eraseinfo data/ELF
note will not cause any problems with older crash version. With the
current version of crash the ELF kdump eraseinfo note would show up as
n_namesz: 10 ("ERASEINFO")
n_type: 0 (?)
More information about the kexec