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iscsi: Add parent wwnn/wwpn or fabric capability for createVport

Browse Source 
https://bugzilla.redhat.com/show_bug.cgi?id=1349696

As it turns out using only the 'parent' to achieve the goal of a
consistent vHBA parent has issues with reboots where the scsi_hostX
parent could change to scsi_hostY causing either failure to create
the vHBA or usage of the wrong HBA for our vHBA.

Thus add the ability to search for the "parent" by the parent wwnn/
wwpn values or just a fabric_name if someone only cares to ensure
usage of the same SAN for the vHBA.
This commit is contained in:
John Ferlan 2016-11-18 07:08:37 -05:00
parent 8366cb0a20
commit 78be2e8b74
1 changed files with 20 additions and 1 deletions
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21
src/storage/storage_backend_scsi.c
View File

@ -695,6 +695,7 @@ createVport(virConnectPtr conn,
unsigned int parent_host;
char *name = NULL;
char *parent_hoststr = NULL;
bool skip_capable_check = false;
virStoragePoolFCRefreshInfoPtr cbdata = NULL;
virThread thread;
int ret = -1;
@ -725,6 +726,23 @@ createVport(virConnectPtr conn,
if (adapter->data.fchost.parent) {
if (VIR_STRDUP(parent_hoststr, adapter->data.fchost.parent) < 0)
goto cleanup;
} else if (adapter->data.fchost.parent_wwnn &&
adapter->data.fchost.parent_wwpn) {
if (!(parent_hoststr =
virGetFCHostNameByWWN(NULL, adapter->data.fchost.parent_wwnn,
adapter->data.fchost.parent_wwpn))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("cannot find parent using provided wwnn/wwpn"));
goto cleanup;
}
} else if (adapter->data.fchost.parent_fabric_wwn) {
if (!(parent_hoststr =
virGetFCHostNameByFabricWWN(NULL,
adapter->data.fchost.parent_fabric_wwn))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("cannot find parent using provided fabric_wwn"));
goto cleanup;
}
} else {
if (!(parent_hoststr = virFindFCHostCapableVport(NULL))) {
virReportError(VIR_ERR_XML_ERROR, "%s",
@ -732,6 +750,7 @@ createVport(virConnectPtr conn,
"cannot find one on this host"));
goto cleanup;
}
skip_capable_check = true;
}
if (virGetSCSIHostNumber(parent_hoststr, &parent_host) < 0)
@ -745,7 +764,7 @@ createVport(virConnectPtr conn,
* parent. Besides we have a way to determine the parent based on
* the 'name' field.
*/
if (adapter->data.fchost.parent && !virIsCapableFCHost(NULL, parent_host)) {
if (!skip_capable_check && !virIsCapableFCHost(NULL, parent_host)) {
virReportError(VIR_ERR_XML_ERROR,
_("parent '%s' specified for vHBA is not vport capable"),
parent_hoststr);