Created attachment 680158 [details]
logs

Description of problem:

I failed attaching an export domain because the resolve.conf did not have 'search qa.lab.tlv.redhat.com tlv.redhat.com redhat.com' in the file. 

when I tried attaching an export domain to the pool I failed mount and SPM was moved to second host. as a result all the domain were unknown for a few minutes and the vm's were non responsive. 

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

si26

How reproducible:

100%

Steps to Reproduce:
1. in a two hosts cluster with iscsi data domains, create and attach an export domain to the setup (not the pool) but do not use full resulve name (wolf.qa.lab.tlv.redhat.com - just use wolf:/mount_point)
2. remove from /etc/resolve.conf the line 'search qa.lab.tlv.redhat.com tlv.redhat.com redhat.com' 
3. try to attach the export domain to the pool
  
Actual results:

when mount fails we move spm to the second host which causes the storage to become unavailable for several minutes until contending is done. 

Expected results:

we should not move SPM when Export domain fails to mount, the domain should fail attach to pool/ if its attach we should move domain to inactive. 

Additional info: logs