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Date: Tue, 12 Mar 2019 01:01:13 +0100
From: Luis Ressel <aranea@aixah.de>
To: gentoo-dev@lists.gentoo.org
Cc: pr@gentoo.org
Subject: [gentoo-dev] News item: sys-apps/s6 ftrig ABI change
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Hello,

here's a draft for a news item I'd like to publish before bumping
sys-apps/s6 to 2.8.0.0:


Title: sys-apps/s6 2.8 ftrig ABI change                                                                                                                                                        
Author: Luis Ressel <aranea@aixah.de>                                                                                                                                                          
Posted: 2019-03-??                                                                                                                                                                             
Revision: 1                                                                                                                                                                                    
News-Item-Format: 2.0                                                                                                                                                                          
Display-If-Installed: <sys-apps/s6-2.8.0.0                                                                                                                                                     
                                                                                                                                                                                               
The 2.8 release of s6 includes a bugfix for the ftrig notification framework                                                                                                                   
which breaks the internal ABI. Thus 2.8 clients may not receive notifications                                                                                                                  
from a pre-2.8 server.                                                                                                                                                                         
                                                                                                                                                                                               
This affects the s6-ftrig-* tools as well as the service state                                                                                                                                 
notifications provided by s6-supervise. If you rely on these (in                                                                                                                               
particular by using s6-svlisten/s6-svwait or s6-rc), freezes will ensue.                                                                                                                       
                                                                                                                                                                                               
It is therefore recommended to shut down all s6 supervision trees before                                                                                                                       
upgrading to s6 2.8.0.0. This may not be an option if you use s6-svscan                                                                                                                        
as PID 1; in this case stop as many services as possible, perform the                                                                                                                          
upgrade and then reboot your system, killing all hanging                                                                                                                                       
s6-svlisten/s6-svwait processes manually.

-- 
Cheers,
Luis Ressel