[Lustre-discuss] OSS and MDS resilience to power failures

[Alexander Oltu]

Hi,

We are going to have a Lustre setup with around 1000 clients. Due to a
power cable constraints we are not able to provide power to OSS and MDS
servers from UPS.

Therefore the question is how resilient is Lustre to OSS and/or MDS
power failures? 

We have quite few thunderstorms here during summer with short power
interruptions. I understand that ext4 is a journaling filesystem and
should be more or less stable to power interruptions. But the real
practice can be different. I believe that some of you have experience
of running OSS and MDS without UPS and can shed some light on this
topic.

Thank you,
Alex.