Red Hat Bugzilla – Bug 889299
missing data in blackbox debug output
Last modified: 2013-11-21 06:52:48 EST
Description of problem: Blackbox output will not contain logging information if logging format specifies string len/precision. For example. If we use the format log("test [%.10s] - [%s]", "some_text", some_more_text"), every argument including and after the "%.10s" will be empty. So the output would be "test [] - []" when we would expect "test [some_text] - [some_more_text] This affects the usefulness of blackbox output for debugging purposes. This specifically affects Pacemaker's use of blackbox. Version-Release number of selected component (if applicable): 0.14.2-3 How reproducible: Always.
Patches have been committed upstream to resolve this issue. https://github.com/asalkeld/libqb/commit/aed8fe942e02e2330c0c2cd56608622328b62968 https://github.com/asalkeld/libqb/commit/e07eccd6a60e58f57821a0cb08cfa5ad31129ee7
I've tested the upstream patches, and it appears that they resolve the use-case in the description. However, while testing the patches I ran across another very similar situation where blackbox output is being truncated. In my pacemaker log file I have the following msg. Jan 03 20:01:49 [32253] 18builder pacemakerd: debug: update_node_processes: Node 18builder now has process list: 00000000000000000000000000000002 (was 00000000000000000000000000000000) but, in the blackbox output the same message is truncated to look like this. debug Jan 03 20:01:49 update_node_processes(620):0: Node 18builder now has process list: 00000000000000000000000000000 This situation needs to be resolved as well. -- Vossel
(In reply to comment #4) > I've tested the upstream patches, and it appears that they resolve the > use-case in the description. However, while testing the patches I ran across > another very similar situation where blackbox output is being truncated. > > In my pacemaker log file I have the following msg. > > Jan 03 20:01:49 [32253] 18builder pacemakerd: debug: > update_node_processes: Node 18builder now has process list: > 00000000000000000000000000000002 (was 00000000000000000000000000000000) > > but, in the blackbox output the same message is truncated to look like this. > > debug Jan 03 20:01:49 update_node_processes(620):0: Node 18builder now has > process list: 00000000000000000000000000000 > > This situation needs to be resolved as well. > > -- Vossel this is the upstream patch to fix this issue: https://github.com/asalkeld/libqb/commit/739faa54fea57152d61e4c70bda3349982bac627
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2013-1634.html