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vm coredump

Coredump support in VDSM

Summary

This feature adds 1 support to VDSM. The feature will dump the core of a domain on a given file for analysis. It will be especially useful when used with high availability.

Owner

Current status

Detailed Description

Benefit to oVirt

Users will be able to dump the core of a VM on a given file when their VMs crash. This will be especially important for highly available servers.

This feature depends on the libvirt (already support)

Documentation / External references

For libvirt support, please see libvirt's documentation on virDomainCoreDump API.

User Interface

def coreDump(self, to, params):

     """  
     dump a VM to a designated file.
     :param to: a string designates the dump file 
     :param params: a dictionary containing:
         *post-action* - The action taken after core dump, which is
                         'crash', 'live', or 'reset'.
                         crash: crash the VM after core dump.
                         live: perform a live core dump.
                         reset: reset the VM after core dump.
         *bypass-cache* - avoid file system cache when saving.
         *memory-only* - dump VM's memory only.
     """