[LinuxFailSafe] failed to write to pipe

[Padmanabhan Sreenivasan]

Peter wrote:
> 
> sorry about the previous post, emacs decided to send the mail before
> me...
> 
> Hello,
> 
> we receive the following message every 10 sec.:
> 
> ccacdb_poll: failed to  write to pipe fd 34: Resource temporarily
> unavailable
> 
> after some poking around, I figured the reason is that one thread
> writes to a pipe, but another one, which is supposed to read, does
> not, and so the pipe runs full and thus the strerror:
> "Resource temporarily unavailable"

cam_svc thread is supposed to read the information. If there
are too many messages in the pipe, you run into this problem.

> 
> Anybody seen this before? knows what to do?  any hint? is that critical?

FailSafe GUI will not get the update. All FailSafe operations
and configuration changes will not be impacted.
If you encounter the problem, you can kill cad process in the machine or connect GUI to another
machine in the cluster. 

Please note that cad process will be automatically restarted
by cmond process.

Paddy
> 
> BTW, we're using the latest failsafe software with libc6 2.1.3
> I also noticed that this is not restricted to ccacdb_poll but also
> occurs at other _polls, namely: cfscdb_poll, ccacdb_shutdown and
> cfscdb_shutdown
> 
> Any help appreciated.
> 
>     Peter
> 
> --
> Peter Kruse <pk@q-leap.com>
> Q-Leap Networks GmbH
> +497071-703171
> 
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