Dear bfys-physics members,

please see below for the plan to upgrade stoomboot to SL6 — you are probably either not interested (if so, apologies for the spam), or getting this now for (at t least) the 2nd time (because if you’re interested, you’d be on the sbc-users mailing list).

If you have reasons to think that the proposal below would have an unreasonable impact on your work, please respond ASAP, as no reply will be taken as (implied) consent to the proposal!

Note that there already is (has been for some time already) an interactive node, stbc-isl6, which serves as a ‘preview’ of what to expect, so you can use it to verify that your workflow works (or can be adapted to) SL6.

Cheers, — Gerhard

Begin forwarded message:

From: Jeff Templon templon@nikhef.nl Subject: [Stbc-users] SL5, SL6, glusterfs & stoomboot : request for user information Date: January 21, 2014 at 12:47:21 GMT+1 To: "stbc-users@nikhef.nl Stomboot MailList" stbc-users@nikhef.nl Cc: "stbc-admin@nikhef.nl" stbc-admin@nikhef.nl, programmaleiders@nikhef.nl

Beste Users and Program Leaders,

[ This is a reminder to stbc-users ; programmaleiders, this was sent already on 17 january but I did not have permission to send mail to the programmaleiders list. Also note : we have yet to hear from anyone who has a requirement for SL5 plus glusterFS access, nor from anyone who needs SL5 at all. Based on current input, we could upgrade the entire cluster to SL6. So if you need SL5 please read below and then answer before Friday! ]

As announced at the jamboree, the stoomboot cluster will be upgraded. Most of the installation is finished; before we can proceed in enabling the expanded cluster, we need to decide how to partition the cluster. The problem is illustrated in the figure below.

Some of the nodes will have no glusterFS access because the glusterFS service is not being expanded at this time; it would not be able to handle simultaneous file accesses from all nodes of the expanded cluster.

When upgrading the cluster we would prefer, for maintenance reasons, to upgrade the operating system to SL6 at the same time. We understand that some users may still require access to SL5; indications are that these same users will also need access to the GlusterFS service, which is why the picture is drawn as it is (no SL5 partition without GlusterFS access). We would like to hear from the following users:

• users who need glusterFS and who can work either on SL5 OR SL6
• users who need glusterFS access and who would prefer or even require SL6
• users who need glusterFS access and who absolutely cannot run on SL6
• users who do not need glusterFS access and who cannot run their code on SL6

With this information we can determine where to draw the boundaries.

*Please send your replies before Friday, January 24th per email to stbc-admin@nikhef.nl*

We remind you that an interactive node running SL6 is available for testing: stbc-isl6.nikhef.nl

Note our current plans are to upgrade two of the existing interactive stoomboot nodes to SL6, leaving the other two on SL5.

Providing legacy support for SL5 is a temporary situation; new developments should not rely on SL5 support!

We will organise a short presentation / Q&A session sometime in the coming weeks to introduce the new features of the system.

JT and RonaldS

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