Who is affected:
All users of the CS department storage or computing facilities.
What is happening:
We are upgrading our storage operating system, which requires the
components of the CS storage system to be rebooted. This upgrade is
expected to be mostly non-disruptive, and department services will continue
as usual, but sporadic moments of interruption may be noticeable at times.
All services that depend upon access to storage share the same minor risk
of performance hiccups for some periods during this window, including cycle
servers, ionic and neuronic clusters, web content, home directories, CIFS,
etc.
Why is it happening:
In July, we identified that a filesystem bug affecting critical shared
storage was causing intermittent failures of some of our web services. This
problem, which occasionally restricted required access and disrupted site
availability, and had no viable workaround, has been under review while we
awaited an official fix from Dell. During the upcoming upgrade, we will
apply the newly released OneFS patch to resolve this issue and enhance
overall service reliability.
We will post updates to the status page: www.csstaff.org
as necessary.
If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.
Sincerely,
CS Staff