[libvirt] [PATCH v4 0/4] storage: handle scsi/iscsi error paths better

[John Ferlan]

v3 here:
http://www.redhat.com/archives/libvir-list/2015-April/msg00240.html

changes:

Patch 1: (prior patch 1)
    Adjustments from code review - mostly just creating a new function
    using the "const char *" path instead of pool pointer.  Called only
    from virStorageBackendStablePath

Patch 2: (prior patch 3)
    Rather than continue to try to talk through the v3, here's the latest
    changes. These will just check in the SCSINewLun if the source pool
    target path doesn't start with /dev, then to just fail. This includes
    if the path is "/dev" or "/dev/".  Theory for failure is that even if
    we allowed "/dev" or "/dev/" to continue down into the call to
    virStorageBackendStablePath all we'd get back was the duplicated
    'devpath' which we'd claim was non-fatal. 

Patch 3: (NEW)
    Adjust virStorageBackendSCSIFindLUs to return a count of LU's found
    rather than the current "0" or -1" with a setting of the boolean found
    (which gets ignored in most cases). By returning a count, 0, or -1 the
    caller can decide what to do with the data.

Patch 4: (prior patch 4)
    Couple of minor changes regarding comments and the use of a goto instead
    of if then else in processLU retval checks. Kept the flow as previous
    including using 'retval' in virStorageBackendSCSIFindLUs rather than
    creating yet another local status that would need to be checked.





John Ferlan (4):
  storage: Split out the valid path check
  scsi: Adjust return value for virStorageBackendSCSINewLun
  scsi: Change return values for virStorageBackendSCSIFindLUs
  scsi: Adjust return values from processLU

 src/storage/storage_backend.c      |  26 +++++-----
 src/storage/storage_backend.h      |   1 +
 src/storage/storage_backend_scsi.c | 101 ++++++++++++++++++++++++-------------
 3 files changed, 79 insertions(+), 49 deletions(-)

-- 
2.1.0