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523 bytes added ,  04:23, 18 June 2015
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root      6206    1  1 10:49 ?        00:00:00 /bin/sh -c i=0; while true; do echo $i >> /foo; i=$(expr $i + 1); sleep 3; done
 
root      6206    1  1 10:49 ?        00:00:00 /bin/sh -c i=0; while true; do echo $i >> /foo; i=$(expr $i + 1); sleep 3; done
 
</pre>
 
</pre>
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== OverlayFS ==
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The OverlayFS filesystem was merged into the upstream Linux kernel 3.18 and is now Docker's preferred filesystem (instead of AUFS).  For successful C/R, however, you need to apply the following kernel patch:
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OverlayFS patch [https://lkml.org/lkml/2015/3/20/372]
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== Async IO (AIO) ==
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If you are using a kernel older than 3.19 and your container uses AIO, you need the following AIO kernel patches from 3.19:
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==== <code>Al Viro's bd9b51e7</code> ====
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==== <code>Pavel Emelyanov's e4a0d3e72</code> ====
       
[[Category:HOWTO]]
 
[[Category:HOWTO]]
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