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Old 01-31-2012, 01:14 PM
Radek Vykydal
 
Default iscsi: no discovery on each target login (ks + consolidate) (#752066)

Resolves: rhbz#752066

Kickstart case, also consolidate kickstart and UI code.

Don't redo discovery each time when logging to a node.
Skip it if already logged to a node on the same address.
Instead, store the node list on the first discovery. Next discovery
would rewrite information about credentials used for previous login
stored by iscsilib's setAuth() (and accessed later by getAuth()) in
database in /var/lib/iscsi/nodes.
---
partIntfHelpers.py | 2 +-
storage/iscsi.py | 48 +++++++++---------------------------------------
2 files changed, 10 insertions(+), 40 deletions(-)

diff --git a/partIntfHelpers.py b/partIntfHelpers.py
index 104ffd1..7c318a5 100644
--- a/partIntfHelpers.py
+++ b/partIntfHelpers.py
@@ -465,7 +465,7 @@ def drive_iscsi_addition(anaconda, wizard):
found_nodes = anaconda.id.storage.iscsi.discover(**discovery_dic t)
step = STEP_NODES
elif step == STEP_NODES:
- if len(found_nodes) < 1:
+ if not found_nodes:
log.debug("iscsi: no new iscsi nodes discovered")
anaconda.intf.messageWindow(_("iSCSI Nodes"),
_("No iSCSI nodes to log in"))
diff --git a/storage/iscsi.py b/storage/iscsi.py
index 9c149f8..07d99ac 100644
--- a/storage/iscsi.py
+++ b/storage/iscsi.py
@@ -278,7 +278,7 @@ class iscsi(object):
port=int(port),
authinfo=authinfo)
if found_nodes is None:
- found_nodes = []
+ return None
self.discovered_targets[(ipaddr, port)] = []
for node in found_nodes:
self.discovered_targets[(ipaddr, port)].append([node, False])
@@ -323,60 +323,30 @@ class iscsi(object):

return (rc, msg)

+ # NOTE: the same credentials are used for discovery and login
+ # (unlike in UI)
def addTarget(self, ipaddr, port="3260", user=None, pw=None,
user_in=None, pw_in=None, intf=None, target=None):
- authinfo = None
found = 0
logged_in = 0

- if not has_iscsi():
- raise IOError, _("iSCSI not available")
- if self._initiator == "":
- raise ValueError, _("No initiator name set")
-
- if user or pw or user_in or pw_in:
- # Note may raise a ValueError
- authinfo = libiscsi.chapAuthInfo(username=user, password=pw,
- reverse_username=user_in,
- reverse_password=pw_in)
- self.startup(intf)
-
- # Note may raise an IOError
- found_nodes = libiscsi.discover_sendtargets(address=ipaddr,
- port=int(port),
- authinfo=authinfo)
+ found_nodes = self.discover(ipaddr, port, user, pw, user_in, pw_in,
+ intf)
if found_nodes == None:
raise IOError, _("No iSCSI nodes discovered")

- if intf:
- w = intf.waitWindow(_("Logging in to iSCSI nodes"),
- _("Logging in to iSCSI nodes"))
-
for node in found_nodes:
- # skip nodes we already have
- if node in self.nodes:
- continue
if target and target != node.name:
log.debug("iscsi: skipping logging to iscsi node '%s'" %
node.name)
continue

found = found + 1
- try:
- if (authinfo):
- node.setAuth(authinfo)
- node.login()
- self.nodes.append(node)
- logged_in = logged_in + 1
- except IOError, e:
- log.warning(
- "Could not log into discovered iscsi target %s: %s" %
- (node.name, str(e)))
- # some nodes may require different credentials
- pass

- if intf:
- w.pop()
+ (rc, msg) = self.log_into_node(node, user, pw, user_in, pw_in,
+ intf)
+ if rc:
+ logged_in = logged_in +1

if found == 0:
raise IOError, _("No new iSCSI nodes discovered")
--
1.7.4

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