BRiT Posted February 8, 2011 Share Posted February 8, 2011 I haven't verified this on a bare-bones usb boot unRAID 5.0b4, but it's occurring on my hdd boot Slackware Current distro. Can someone else running 5.0b4, preferably with a base flash-drive image confirm this on their system? I am seeing defunct processes show up for share_size in the process list. It increments each time I click "compute" in the webGui. The UI updates and displays the proper stats, but the process list keeps growing despite the process having finished it's purpose. ps -ef | egrep -i share_size root 10682 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10705 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10727 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10745 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10759 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10773 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 12577 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12599 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12613 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12627 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12641 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12689 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12707 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12729 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12743 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12757 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 13426 2232 0 18:34 pts/0 00:00:00 egrep -i share_size ps -ef | egrep -i share_size root 10682 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10705 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10727 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10745 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10759 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10773 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 12577 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12599 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12613 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12627 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12641 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12689 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12707 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12729 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12743 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12757 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 13427 2075 0 18:34 ? 00:00:00 [share_size] <defunct> root 13450 2232 0 18:35 pts/0 00:00:00 egrep -i share_size ps -ef | egrep -i share_size root 10682 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10705 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10727 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10745 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10759 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 10773 2075 0 17:59 ? 00:00:00 [share_size] <defunct> root 12577 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12599 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12613 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12627 2075 0 18:25 ? 00:00:00 [share_size] <defunct> root 12641 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12689 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12707 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12729 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12743 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 12757 2075 0 18:26 ? 00:00:00 [share_size] <defunct> root 13427 2075 0 18:35 ? 00:00:00 [share_size] <defunct> root 13691 2075 0 18:38 ? 00:00:00 [share_size] <defunct> root 13710 2232 0 18:38 pts/0 00:00:00 egrep -i share_size Link to comment
Stokkes Posted February 9, 2011 Share Posted February 9, 2011 I can confirm this behaviour on my base flash install of b4. Running the compute from the GUI spawns a new process that doesn't terminate itself. Link to comment
josetann Posted February 9, 2011 Share Posted February 9, 2011 Clicked the "compute" link for three different shares, here's what I get a couple hours or so later: ps -ef | egrep -i share_size root 1554 1123 0 17:26 ? 00:00:00 [share_size] <defunct> root 1570 1123 0 17:26 ? 00:00:00 [share_size] <defunct> root 1586 1123 0 17:26 ? 00:00:00 [share_size] <defunct> root 2191 2176 0 18:54 pts/0 00:00:00 egrep -i share_size I'm running 5.0b4 off a flash drive. Link to comment
limetech Posted February 9, 2011 Share Posted February 9, 2011 I'll look into this, but <defunct> processes are meaningless. Link to comment
BRiT Posted February 9, 2011 Author Share Posted February 9, 2011 Agreed, the zombie processes are meaningless until they use up all your process slots and the system is unable to function. The system needs to keep them around should the parent process ever ask for the status of the child process. Now if the parent process is finished with them, then it needs to issue one of the variants of wait() calls so the system knows to dispose of this extra housekeeping. Link to comment
Stokkes Posted February 9, 2011 Share Posted February 9, 2011 Do you sit at the webGui all day and calculate your share sizes? I don't think I've ever used this function, so while it's probably a bug, I'd put it pretty low on the priority list Link to comment
BRiT Posted February 9, 2011 Author Share Posted February 9, 2011 Of course I view things differently where anything which has the potential to crash a system is higher priority in my book. From a programming perspective it could be fairly simple to fix, anything from adding a simple wait() call at the end of processing in the parent to even using a background reaper thread waiting on the list of outstanding child processes to finish or setting the SIGCHLD signal handler to SIG_IGN. Then again it could be more complicated than that depending on how the process input/output is redirected through to the web management display and if another layer such as PHP is involved as opposed to being basic C POSIX process management calls. I have faith that Limetech will be able to fix this in relatively short order. Link to comment
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