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Re: [libvirt] [PATCH 3/3 v5] virsh: allow the user to specify vmcore's format



On 06/12/2012 05:07 AM, Wen Congyang wrote:
> Add a new parameter --memory-only for 'virsh dump' command. So
> the user can decide the vmcore's format.
> ---
>  tools/virsh.c   |    3 +++
>  tools/virsh.pod |    5 ++++-
>  2 files changed, 7 insertions(+), 1 deletions(-)
> 
> diff --git a/tools/virsh.c b/tools/virsh.c
> index abcfbff..c875a90 100644
> --- a/tools/virsh.c
> +++ b/tools/virsh.c
> @@ -4006,6 +4006,7 @@ static const vshCmdOptDef opts_dump[] = {
>      {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
>      {"file", VSH_OT_DATA, VSH_OFLAG_REQ, N_("where to dump the core")},
>      {"verbose", VSH_OT_BOOL, 0, N_("display the progress of dump")},
> +    {"memory-only", VSH_OT_BOOL, 0, N_("dump domain's memory only")},
>      {NULL, 0, 0, NULL}
>  };
>  
> @@ -4044,6 +4045,8 @@ doDump(void *opaque)
>          flags |= VIR_DUMP_BYPASS_CACHE;
>      if (vshCommandOptBool(cmd, "reset"))
>          flags |= VIR_DUMP_RESET;
> +    if (vshCommandOptBool(cmd, "memory-only"))
> +        flags |= VIR_DUMP_MEMORY_ONLY;
>  
>      if (virDomainCoreDump(dom, to, flags) < 0) {
>          vshError(ctl, _("Failed to core dump domain %s to %s"), name, to);
> diff --git a/tools/virsh.pod b/tools/virsh.pod
> index ef71717..e870c03 100644
> --- a/tools/virsh.pod
> +++ b/tools/virsh.pod
> @@ -827,7 +827,7 @@ the I<format> argument must be B<qemu-argv>. For Xen hypervisor, the
>  I<format> argument may be B<xen-xm> or B<xen-sxpr>.
>  
>  =item B<dump> I<domain-id> I<corefilepath> [I<--bypass-cache>]
> -{ [I<--live>] | [I<--crash>] | [I<--reset>] } [I<--verbose>]
> +{ [I<--live>] | [I<--crash>] | [I<--reset>] } [I<--verbose>] [I<--memory-only>]
>  
>  Dumps the core of a domain to a file for analysis.
>  If I<--live> is specified, the domain continues to run until the core
> @@ -838,6 +838,9 @@ If I<--reset> is specified, the domain is reset after successful dump.
>  Note, these three switches are mutually exclusive.
>  If I<--bypass-cache> is specified, the save will avoid the file system
>  cache, although this may slow down the operation.
> +If I<--memory-only> is specified, the file is elf file, and will only
> +include domain's memory and cpu common register value. It is very
> +useful if the domain uses host devices directly.
>  
>  The progress may be monitored using B<domjobinfo> virsh command and canceled
>  with B<domjobabort> command (sent by another virsh instance). Another option
> 

ACK.

Martin


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