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virsh: allow the user to specify vmcore's format
Add a new parameter --memory-only for 'virsh dump' command. So the user can decide the vmcore's format.
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@ -4022,6 +4022,7 @@ static const vshCmdOptDef opts_dump[] = {
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{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
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{"file", VSH_OT_DATA, VSH_OFLAG_REQ, N_("where to dump the core")},
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{"verbose", VSH_OT_BOOL, 0, N_("display the progress of dump")},
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{"memory-only", VSH_OT_BOOL, 0, N_("dump domain's memory only")},
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{NULL, 0, 0, NULL}
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};
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@ -4060,6 +4061,8 @@ doDump(void *opaque)
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flags |= VIR_DUMP_BYPASS_CACHE;
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if (vshCommandOptBool(cmd, "reset"))
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flags |= VIR_DUMP_RESET;
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if (vshCommandOptBool(cmd, "memory-only"))
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flags |= VIR_DUMP_MEMORY_ONLY;
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if (virDomainCoreDump(dom, to, flags) < 0) {
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vshError(ctl, _("Failed to core dump domain %s to %s"), name, to);
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@ -827,7 +827,7 @@ the I<format> argument must be B<qemu-argv>. For Xen hypervisor, the
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I<format> argument may be B<xen-xm> or B<xen-sxpr>.
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=item B<dump> I<domain-id> I<corefilepath> [I<--bypass-cache>]
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{ [I<--live>] | [I<--crash>] | [I<--reset>] } [I<--verbose>]
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{ [I<--live>] | [I<--crash>] | [I<--reset>] } [I<--verbose>] [I<--memory-only>]
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Dumps the core of a domain to a file for analysis.
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If I<--live> is specified, the domain continues to run until the core
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@ -838,6 +838,9 @@ If I<--reset> is specified, the domain is reset after successful dump.
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Note, these three switches are mutually exclusive.
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If I<--bypass-cache> is specified, the save will avoid the file system
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cache, although this may slow down the operation.
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If I<--memory-only> is specified, the file is elf file, and will only
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include domain's memory and cpu common register value. It is very
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useful if the domain uses host devices directly.
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The progress may be monitored using B<domjobinfo> virsh command and canceled
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with B<domjobabort> command (sent by another virsh instance). Another option
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