Nginx writing to Cephfs

[Valentin V. Bartenev]

On Thursday 23 July 2015 14:51:58 vedranf wrote:
> Valentin V. Bartenev Wrote:
> 
> > It more looks like a bug in cephfs.  writev() should never return
> > ERESTARTSYS.
> 
> 
> I've talked to the ceph people, they say ERESTARTSYS shows up in strace
> output but it is handled by the kernel and that writev(2) is interrupted by
> the SIGALRM, which actually appears in the strace output just after writev
> fails.
> 
> I also failed to get this error by doing the same this as nginx using dd, dd
> always succeeded so it happens due to combination of nginx and cephfs.
> 
> Here's full strace output (2 examples from 2 differently configured
> servers):
> 
> http://pastebin.com/wUAAcdT7
> 
> http://pastebin.com/wHyWc9U5
> 

Do you have timer_resolution configured?

  wbr, Valentin V. Bartenev