Description of problem:
found in BZ1060383, see that BZ for all comments if needed.

fail, vdsm3-4.14.6-0.el7ev.x86_64

# engine-log-collector --no-postgresql -H 10.34.63.222 -v
...snip...
INFO: collecting information from 10.34.63.222
DEBUG: calling(['/usr/bin/ssh', '-n', '-p', '22', '-i', '/etc/pki/ovirt-engine/keys/engine_id_rsa', '-oStrictHostKeyChecking=no', '-oServerAliveInterval=600', 'root.63.222', "\nVERSION=`/bin/rpm -q --qf '[%{VERSION}]' sos | /bin/sed 's/\\.//'`;\nif [ $VERSION -ge 22 ]; then\n    /usr/sbin/sosreport  --batch -k general.all_logs=True         -o libvirt,vdsm,general,networking,hardware,process,yum,filesys,devicemapper,selinux,kernel,memory,rpm\nelif [ $VERSION -ge 17 ]; then\n    /usr/sbin/sosreport  --no-progressbar -k general.all_logs=True         -o vdsm,general,networking,hardware,process,yum,filesys\nelse\n    /bin/echo No", 'valid', 'version', 'of', 'sosreport', 'found. 1>&2\n    exit 1\nfi\n'])
DEBUG: returncode(0)
DEBUG: STDOUT(
sosreport (version 3.0)

)
DEBUG: STDERR(Error reading response length from authentication socket.^M
no such option "all_logs" for plugin (general)
)
DEBUG: message(list index out of range)
DEBUG: parse_sosreport_stdout: Traceback (most recent call last):
  File "/usr/bin/engine-log-collector", line 530, in parse_sosreport_stdout
    if fileAry[0] is not None and len(fileAry) > 0:
IndexError: list index out of range

ERROR: Failed to collect logs from: 10.34.63.222; Could not parse sosreport output to determine filename
DEBUG: Traceback (most recent call last):
DEBUG:   File "/usr/bin/engine-log-collector", line 709, in run
DEBUG:     self.parse_sosreport_stdout(stdout)
DEBUG:   File "/usr/bin/engine-log-collector", line 566, in parse_sosreport_stdout
DEBUG:     "Could not parse sosreport output to determine filename"
DEBUG: Exception: Could not parse sosreport output to determine filename
...snip...
DEBUG: STDOUT(2c81e0afb74f4002eb4708a5c9c62e58  /tmp/sosreport-LogCollector-20140415170959.tar.xz
)
DEBUG: STDERR()
INFO: Log files have been collected and placed in /tmp/sosreport-LogCollector-20140415170959.tar.xz.
The MD5 for this file is 2c81e0afb74f4002eb4708a5c9c62e58 and its size is 43.5M
# echo $?
2

missing data from host:

# tar tJvf /tmp/sosreport-LogCollector-20140415170959.tar.xz | grep '10.34.63.222.*tar.xz'
#

> (In reply to Bryn M. Reeves from comment #10)
> In reply to comment #8 - it's not really clear what's happening here.
> Clearly engine-log-collector got something it didn't expect in the output
> from the remote sos command but without seeing what the output was it's hard
> to say what may have caused it.
> 
> Note that there's been some reorganisation of plugins in 3.0 - e.g.
> general.all_logs no longer exists as all syslog data is now captured in the
> 'logs' plugin (there is a corresponding logs.all_logs option now).


plus...

(In reply to Bryn M. Reeves from comment #10)
> In reply to comment #8 - it's not really clear what's happening here.
> Clearly engine-log-collector got something it didn't expect in the output
> from the remote sos command but without seeing what the output was it's hard
> to say what may have caused it.
> 
> Note that there's been some reorganisation of plugins in 3.0 - e.g.
> general.all_logs no longer exists as all syslog data is now captured in the
> 'logs' plugin (there is a corresponding logs.all_logs option now).

(In reply to Bryn M. Reeves from comment #12)
> OK looking at the output in the attachment:
> 
> https://bugzilla.redhat.com/attachment.cgi?id=886516
> 
> It seems to be the problem I suggested in comment #10 - the "all_logs"
> option has moved from the general plugin to the logs plugin:
> 
> DEBUG: returncode(0)
> DEBUG: STDOUT(
> sosreport (version 3.0)
> 
> )
> DEBUG: STDERR(Error reading response length from authentication socket.
> 
> no such option "all_logs" for plugin (general)
> )
> 
> It might be useful to teach the log collector some of the common errors
> sosreport can spit out so that it can react to this better.

Version-Release number of selected component (if applicable):
vdsm3-4.14.6-0.el7ev.x86_64

How reproducible:
100%

Steps to Reproduce:
1. rhel7 host in RHEVM 3.4 env (vdsm and dependencies from brew)
2. run engine-log-collector
3.

Actual results:
no data from host

Expected results:
*.xz archive with host's data

Additional info:
see BZ1060383 for relevant info