Created attachment 757083 [details]
logs

Description of problem:

we have two issues here.

1. when the target domain does not have enough disk space to create the initial volume we still sent the create volume to vdsm even after alerts that there is not enough disk space. 
2. we do not calculate the amount of disk space in the target domain which causes the domain to reach to <1G 

Version-Release number of selected component (if applicable):

sf17.4

How reproducible:

100%

Steps to Reproduce:
1. create several vms and LSM their disks from one domain to the other several times. 
2. 
3.

Actual results:

even though we do not have enough disk space in both the src and dst domains we start the LSM 

Expected results:

we should not start a LSM operation if we do not have enough disk space to move the disks. 

Additional info: logs


8691f03c-80a2-452d-9231-56e7f5acb81f::ERROR::2013-06-05 11:41:18,033::threadPool::209::Misc.ThreadPool.WorkerThread::(run) Task <function runTask at 0x7f5aab894230> failed
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/threadPool.py", line 201, in run
    cmd(args)
  File "/usr/share/vdsm/storage/storage_mailbox.py", line 75, in runTask
    ctask.prepare(cmd, *args)
  File "/usr/share/vdsm/storage/task.py", line 1159, in prepare
    raise self.error
RuntimeError: Volume extension failed for hda (domainID: 7414f930-bbdb-4ec6-8132-4640cbb3c722, volumeID: 2cdffe84-7cbf-41d8-a0ad-34721f9e5956)


18d57932-f978-49eb-ac32-0a5c8a1be413::ERROR::2013-06-05 11:48:17,640::storage_mailbox::153::Storage.SPM.Messages.Extend::(processRequest) processRequest: Exception caught while
 trying to extend volume: 269fa277-1db7-426f-891c-51b777311a79 in domain: 81ef11d0-4c0c-47b4-8953-d61a6af442d8
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/storage_mailbox.py", line 149, in processRequest
    pool.extendVolume(volume['domainID'], volume['volumeID'], size)
  File "/usr/share/vdsm/storage/securable.py", line 68, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/share/vdsm/storage/sp.py", line 1324, in extendVolume
    sdCache.produce(sdUUID).extendVolume(volumeUUID, size, isShuttingDown)
  File "/usr/share/vdsm/storage/blockSD.py", line 1228, in extendVolume
    lvm.extendLV(self.sdUUID, volumeUUID, size) #, isShuttingDown) # FIXME
  File "/usr/share/vdsm/storage/lvm.py", line 1093, in extendLV
    free_size / constants.MEGAB))
VolumeGroupSizeError: Volume Group not big enough: ('81ef11d0-4c0c-47b4-8953-d61a6af442d8/269fa277-1db7-426f-891c-51b777311a79 3072 > 768 (MiB)',)
18d57932-f978-49eb-ac32-0a5c8a1be413::DEBUG::2013-06-05 11:48:17,641::storage_mailbox::109::Storage.SPM.Messages.Extend::(__init__) new extend msg created: domain: 81ef11d0-4c0
c-47b4-8953-d61a6af442d8, volume: 269fa277-1db7-426f-891c-51b777311a79