It appears that there are certain cases where a detach
and a delete call can overlap causing a race in the
remove_iscsi_target method. The result is that when
the slower method gets around to the final removal of
the persistence file it's no longer there, so we
hit an unhandled exception.
This patch does two things:
1. It adds the volume lock to the detach_volume
method in the manager (already in place for delete).
This should mitigate the race and allow us to avoid it.
2. In the iscsi_remove_target method check if the
persist file has already been removed when we get
to the last check. The fact is that if it was somehow
removed before we got here we don't really care, we're
just going to delete it anyway.
Eric Harney [Wed, 29 Jan 2014 15:45:03 +0000 (10:45 -0500)]
Rename self.tgtadm to self.target_helper
Using "tgtadm" for this member variable is confusing because it
actually represents tgt, IET, and LIO. Rename to a more generic
term to make things more readable.
Also remove "tgtadm" from method names and references in tests
where it is not tgtadm-specific.
I'm choosing the name "target_helper" because "tgtadm" = tgtd,
and "iscsi_helper" doesn't fit when using RDMA in ISERDriver.
There was a race condition between the two Event() objects being
created within loopingcall and Retry in api module. Did away with
the Event object in Retry and used loopingcall the right way.
This commit brings the implementation of the test_rbd and
test_backup_ceph unit tests more inline and tries to ensure
that no mock is set without being unset so as not to tread
on the toes of any other tests.
John Griffith [Fri, 31 Jan 2014 03:53:37 +0000 (03:53 +0000)]
Remove create_export from volume create
Currently the LVM driver creates iscsi targets on
volume creation, even though it's only used at
attach time. This isn't necessary and in fact
causes issues if a volume is extended because the
target information isn't currently updated after the
extend. In addition a number of other drivers inclduing
the LIO iscsi driver require the target be created with
initiator info, so the tgt that's created initially
again isn't valid.
This change removes the create_export call from the
volume create process and makes it part of the
managers intialize_connection routine which is
more appropriate.
This change also removes the target on detach since
it's not used any longer and again as the volume may
be modified or extended.
Time unit is missing in the description of vmdk driver option
"vmware_task_poll_interval". Due to this, the vmdk driver config
reference document doesn't have the timeunit in its description
column. This fix adds the missing time unit (seconds) in the
driver option.
Avishay Traeger [Sun, 26 Jan 2014 10:39:27 +0000 (12:39 +0200)]
Allow spaces in host names in the storwize driver
Storwize/SVC naming rules allow host objects to have spaces in their
names. The SSH injection filter will currently reject such names, and so
we surround the names with quotes. Please note that this doesn't allow
to have an arbitrary character in there except a space (anything else
will be cleaned up by the driver or rejected by the SSH injection filter
up the call chain).
Bertrand Lallau [Sat, 1 Feb 2014 13:33:33 +0000 (14:33 +0100)]
Remove a catching exception during delete_volume
GlanceMetadataNotFound Exception was catching during
a call to volume_glance_metadata_delete_by_volume().
This exception is never thrown by the implementation.
This catching has been removed.
Ryan McNair [Mon, 27 Jan 2014 21:48:51 +0000 (21:48 +0000)]
Add support for special char in volume metadata
Using special characters such as "&" in volume metadata caused SAX
parser to split text into multiple child nodes, as stated in the
specs for SAX parsers. In this case extract_text would return
'None' because text was return if there was exactly
one child node. Concatenating the values of child nodes accounts
for SAX parsers splitting contigous characters into
multiple chunks.
Brianna Poulos [Wed, 29 Jan 2014 20:49:20 +0000 (15:49 -0500)]
Stop volume_type_encryption creation when in use
This bug fix addresses bug #1274252. It requires a volume
type to have no volumes with the type before allowing it
to be made encrypted. This prevents a situation where
non-encrypted volumes could have an encrypted volume type.
This fix also adds a unit test to confirm functionality.
john-griffith [Wed, 29 Jan 2014 04:30:59 +0000 (21:30 -0700)]
Revert initialize_connection changes
A change was merged that reusulted in interittent
gate failures. It seems that in certain cases the
intitialize is doing an update targets and is
deleting the existing targets and not recreating them.
The idea of this patch was to fix up the iscis targets
for cases where volumes are extended.
A better solution is in progress that will remove the
target creation from the create_volume process altogether.
Currently we seem to have create_export, ensure_export and
now initialize that all are designed to do very similar
things.
A bug has been filed to address this and will attempt
to collapse these functions to be done at attach time.
Florian Haas [Mon, 20 Jan 2014 21:42:11 +0000 (22:42 +0100)]
VolumeManager: initialize even if a volume can't be found
If a previously volume cannot be exported (for example, because
an iSCSI target's backing LV is no longer present), VolumeManager
would previously bail out, leaving the volume service uninitialized.
This left volumes dangling in limbo: their state would be reported
as available (clearly not a reflection of reality), and they could
not be deleted (because the volume service that would be responsible
for deletion was unavailable).
Instead, catch an exception raised by ensure_export() separately,
log it, and set the volume to the error state.
For the tgt backend, this will also remove the volume_path file.
Previously this would cause an ISCSITargetRemoveFailed exception
when the volume would be removed. Instead, simply log a warning
and return, the way other backends (example: RBD) already do.
Also, add an info message that reflects the actual path and
contents of the volume_path file.
Finally, fix up the tgtadm unit test so that it tests for
identical IQNs,
Eric Harney [Mon, 27 Jan 2014 23:46:26 +0000 (18:46 -0500)]
Add create_iscsi_target stub to TargetAdmin
This should be defined in TargetAdmin, as it is assumed to be
present in all subclasses by callers.
IetAdm and LioAdm may need additional work to behave as desired
in all circumstances (such as volume extend), but this should
at least stabilize things in the meantime.
This patch validates the keys of the extra specs
before setting them.
This will make possible to remove those keys.
It allows alphanumeric characters, underscores,
periods, colons and hyphens.
Zhiteng Huang [Thu, 9 Jan 2014 06:54:22 +0000 (14:54 +0800)]
Make sure report_interval is less than service_down_time
Services that inherit service.py/Service class would register
themselves to DB and then update stats periodically (every
report_interval second). The consumer of this kind of information,
like scheduler or 'os-service' API extension, will consider a service
is 'up' (active) if last update from that service is not longer than
'service_down_time' ago.
The problem is if 'report_interval' was configured/provided greater
than 'service_down_time' by mistake, services would then be always
considered in 'down' state, which can result in unsuccesful placement
of volume create request for example. This is what Bug #1255685 is
about.
In previous fix: https://review.openstack.org/#/c/60760/, a
configuration check helper function basic_config_check() was added
*wrongly* to WSGIService class instead of Service class. This patch
moves the configuration check helper function and the check to the
right place to make sure 'report_interval' is less then
'service_down_time'.
john-griffith [Sat, 25 Jan 2014 02:12:01 +0000 (19:12 -0700)]
Fix up the way we do iqn variable in unit test
A recent bug was reported when a developer was trying to work
with the iscsi target unit tests. There were two problems discovered,
one of which has been addressed by the dependent patch of this commit
(https://review.openstack.org/#/c/68223/) which fixed the inconsistencies
in the string we used for iqn's in our test.
This patch addresses another issue that's somewhat related and was
exposed when the developer tried to use the "self.target_name" variable
instead of hard-coding the iqn's in the tests.
The problem is that the target_name variable uses an invalid format
for the iqn based on cinder-defaults. It neglected to use the
volume_name prefix (in this case: "volume-").
This patch modifies the self.target_name variable to be more accurate
with what we would see in real usage, it also modifies the test to just
use this variable rather than hard coding it and running the risk of
having mismatches again in the future.
John Griffith [Fri, 24 Jan 2014 21:51:21 +0000 (14:51 -0700)]
Catch new iscsi exception
A while back we fixed up a target create/update error
that was identified in the gating tests:
https://review.openstack.org/#/c/47513/
Since then a new patch was introduced to to the update and separate
it so that it could easily be used in other places.
https://review.openstack.org/#/c/58599/
The problem is this added a new exception "TargetUpdate" and
didn't add this to the except block that we have.
This patch changes the catch block to handle the new exception and
do the retry, thereby putting the original fix back in place.
ling-yun [Mon, 20 Jan 2014 10:48:43 +0000 (18:48 +0800)]
Delete volume transfer in volume_destroy function
Doing volume force delete operation on volume-A will change volume-A's
status to 'deleted', so all related data about volume-A should be deleted.
Now current version's volume_destroy function doesn't delete related data
of volume transfer. If there is volume transfer about volume-A, first do
force delete operation on volume A, and thus the volume-A's transfer data
would be residual. So remove the related data of volume transfer in
volume_destroy function.
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