Re: Cephfs and ERESTARTSYS on writes

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On 07/23/2015 06:47 PM, Ilya Dryomov wrote:
> 
> To me this looks like a writev() interrupted by a SIGALRM.  I think
> nginx guys read your original email the same way I did, which is "write
> syscall *returned* ERESTARTSYS", but I'm pretty sure that is not the
> case here.
> 
> ERESTARTSYS shows up in strace output but it is handled by the kernel,
> userpace doesn't see it (but strace has to be able to see it, otherwise
> you wouldn't know if your system call has been restarted or not).
> 
> You cut the output short - I asked for the entire output for a reason,
> please paste it somewhere.

Might be, however I don't know why would be nginx interrupting it, all
writes are done pretty fast and timeouts are set to 10 minutes. Here are
2 examples on 2 servers with slightly different configs (timestams
included):

http://pastebin.com/wUAAcdT7

http://pastebin.com/wHyWc9U5


Thanks,
Vedran


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