Re: [libvirt] [PATCH 02/14] Retain disk PCI address across libvirtd restarts
On Mon, Jul 20, 2009 at 12:51:12PM +0100, Mark McLoughlin wrote:
When we hot-plug a disk device into a qemu guest, we need to retain
its
PCI address so that it can be removed again later. Currently, we do
retain the slot number, but not across libvirtd restarts.
Add <state devaddr="xxxx:xx:xx"/> to the disk device XML config when the
VIR_DOMAIN_XML_INTERNAL_STATUS flag is used. We still don't parse the
domain and bus number, but the format allows us to do that in future.
* src/domain_conf.h: replace slotnum with pci_addr
diff --git a/src/domain_conf.h b/src/domain_conf.h
index 6e111fa..1766b61 100644
--- a/src/domain_conf.h
+++ b/src/domain_conf.h
@@ -106,7 +106,7 @@ struct _virDomainDiskDef {
int cachemode;
unsigned int readonly : 1;
unsigned int shared : 1;
- int slotnum; /* pci slot number for unattach */
+ char *pci_addr; /* for detach */
};
I think it'd be nicer to store the parsed address here as a
nested struct with domain, bus, slot.
It is not really saving us trouble by using a string, since most
of the places using this field end up asprintf'ing it into another
string, or even having to extract pieces out of it again.
Daniel
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