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Description of problem:
lvm tools show 

"vsnprintf failed for config line
_log_array_value_used: failed to write node value"

with an extrem long filter definition in /etc/lvm/lvm.conf

Version-Release number of selected component (if applicable):
RHEL6.8

How reproducible:
Always

Steps to Reproduce:
1. Create insane long filter rules
2. Run any lvm command
3.

Actual results:
Aforementioned error messages

Expected results:
Well defined error message like "Your filter rules are too long"

Additional info:

Clear bug: if it's a valid regex it should work regardless of length, not give an error unless the machine runs out of memory.  The filter there is not too long.

Just a side node - for better and more efficient usage could be here to rather define  'accepted' devices (likely will be a much shorter list) and  reject  .*  (all other devices) (as while-list)

(reading and parsing very long config files will get noticeable)

Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:

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