Maintenance window Wednesday 2017-03-01 -- finished
Maintenance starts at 0900 hours and will probably last all day long. This time, we will:
Install new main ethernet switches, which will affect access to all login nodes in the morning, because UPPMAX will be disconnected from internet. Installing the new switch will also affect connection to Pica over the day, meaning we will stop queues on Fysast1, Milou, Rackham, and Tintin.
Upgrade kernel and other system software on all nodes of Bianca, Fysast1, Irma, Milou, Mosler, and Rackham.
Decommission Tintin. UPPMAX starts to migrate all active Tintin projects to Rackham. Migration is expected to last for up to three days. When the migration has finished, all Tintin users will be able to login to Rackham and we will allow their projects to continue their activities on Rackham. Home directories will be located on Pica, as they are now, but project directories will move to to Crex, a new storage system on Rackham. Note that job queue on Tintin will be dropped, so any jobs still queuing when maintenance window starts will need to be requeued on Rackham.
Update at 1130 hours:
The new ethernet swhitches have been installed, and are now configured. We have also corrected a few errors in our electrical UPS (uninterrruptible power supply) system.
Please do not login yet. Everything is not yet working as intended.
Update at 1540 hours:
We are still configuring our networks and upgrading our clusters.
Update at 1600 hours:
We haved finished today's maintenance for Mosler.
Update at 1810 hours:
Also Bianca and Irma is back in production.
Update at 1830 hours:
We have finished maintenance on Fysast1 and Milou.
Rackham is still in maintenance. We also have a problem with internet access from compute nodes, which we hopefully can fix tomorrow Thursday.
Update at 2030 hours:
Now the maintenance of all compute resources has finished.
We still can not reach internet from compute nodes. We try to fix that problem tomorrow. Please tell us if you notice other problems.
Update Thursday at 1710 hours:
We have not yet been able to give our compute nodes internet access, but will continue tomorrow.
Update Friday at 1100 hours:
Now compute nodes have internet acess again, as before the maintenance, so we close the maintenance window.
Next maintenance window is planned for Wednesday, April 5th.
Bianca's storage system Castor had a hiccup yesterday Thursday -- FIXED
Maintenance window Wednesday 2017-08-02 -- FINISHED
Unexpected reboot of Pica at Monday morning.
Restart of two Milou login servers today Thursday
Lower service level during UPPMAX holidays
Part of storage system Pica is still very slow
Pica was partly restarted just now, please look for problems in your job output
UPPMAX had to restart part of storage system Pica, because it worked too slowly with nearly no read/write traffic.
The restart was done a little after 1300 hours.
For Rackham users, this meant that you might have had problems with reading and writing to your home directory.
For Milou users, this meant that you also might have had problems with reading and writing to your home directory. But for Milou users, also reading from /sw (where the modules live) and reading and writing to some project directories were affected.
Please look one extra time for problems in your job output, for jobs running at this time.
We are sorry for the inconvenience.
On Milou and Rackham, very difficult to login or otherwise use /home directories -- FIXED
UPPMAX has problem with an extremely slow access to /sw (where e.g. modules live) and home directories on Milou, and to home directories on Rackham.
Because of that, it is very difficult to login to Milou and Rackham.
We will investigate the source of this problem, and will report any success as updates here.
Update at 1310 hours
We restarted part of Pica, and that solved the problem
Hopefully your jobs will continue without problems, but please be careful and look once extra time for errors in your job output.
SUPR and C3SE website down
SUPR and C3SE websites are down at the moment. This prevents you from using SUPR at the moment. Please try again later
No maintenance planned for today's maintenance window
First (non-holiday) Wednesday of each month is UPPMAX's normal, planned maintenance window.
But today we will do no maintenance.
Next maintenance window is 2nd of August.
Restart of login server milou-f Tuesday morning -- FINISHED
File system mounts of Pica volumes was not working correctly.
This was fixed by a restart of the server. Now it works much better.
We are sorry about any inconvenience for you due to this.
Lost contact with Milou nodes m[1-48] for an hour this morning -- FIXED
From approximately 0800 hours to 0910 hours this morning, an ethernet switch in Milou lost power, making 48 nodes unavailable.
Two jobs got NODE_FAIL when trying to start, and interactive work on these nodes was denied. Otherwise, we seem to have had no problems with the temporary network loss.
Singularity is available
Urgent kernel upgrade -- FINISHED
Today we are performing an urgent kernel upgrade on Milou, Fysast1, Rackham, Irma, and Bianca. Login nodes will be restarted during the day. No running jorbs or queues are stopped. We will update on the progress here in System News during the day.
UPDATE 16:00 - Update completed.
Intelmpi performance issues
Bianca graphical login now working
Uses Thinlinc Web Access. Not X-forwardning.
Bianca's storage system Castor has problems -- FIXED
Maintenance window Wednesday 2017-06-07 -- FINISHED