Comment 5 for bug 1355899

A recent look at logstash[1] shows that this is still happening every now and again, even with the USE_SCREEN changes in place. Digging around it appears the problem here is that the value of SCREEN_LOGDIR is different when the err() function is called from when it is used to create the the SCREEN_LOGDIRs.

In a grenade.sh log we see these various assignments:

SCREEN_LOGDIR=/opt/stack/new/logs/screen
SCREEN_LOGDIR=/opt/stack/new/screen-logs
SCREEN_LOGDIR=/opt/stack/old/logs/screen
SCREEN_LOGDIR=/opt/stack/old/screen-logs

But the one that is actually used when calling err() is '/opt/stack/logs/screen/error.log' which is set in grenaderc.

Given the intricacies of where in the stack we are and who is in charge of a env variable at any given moment I'm not sure what the right fix is here.

Note: This error is hiding actual errors, but is not the cause of failure a grenade run itself.

[1] http://logstash.openstack.org/#eyJzZWFyY2giOiJtZXNzYWdlOlwiL29wdC9zdGFjay9sb2dzL3NjcmVlbi9lcnJvci5sb2c6IFBlcm1pc3Npb24gZGVuaWVkXCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjE3MjgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MTI1ODk0ODM5NzB9