ITS Service Status Report

Scheduled Maintenance — Resolved

MiStorage security patching

Services Affected: MiStorage CIFS, MiStorage NFS

Start Time: 03/30/2019 11:00 pm

Maintenance Completed: 03/31/2019 6:00 am

Issue Symptoms: Intermittent issues

Applying rollup patches 246711 and 246713 to the production cluster macc-its to mitigate the high severity vulnerabilities from the DSA-2019-042 advisory as described in https://support.emc.com/kb/531246 on the clusters. The patching concludes with a rolling reboot of each node in the cluster. Rebooting a node means that any stateful connections on it will be disrupted and you will need to reconnect to the cluster which will then connect you to a new node. Most CIFS/SMB and NFS clients will be able to do this automatically. If you encounter problems with a network drive or mount after this maintenance try remounting.

Technical Details

Service Type: Production

Server Name: macc-win.m.storage.umich.edu, macc-isi-nfs.value.storage.umich.edu

Comments:

Applying rollup patches 246711 and 246713 to the production clusters macc-its and macc-turbo to mitigate the high severity vulnerabilities from the DSA-2019-042 advisory as described in https://support.emc.com/kb/531246 on the clusters. The patching concludes with a rolling reboot of each node in the cluster. Rebooting a node means that any stateful connections on it will be disrupted and you will need to reconnect to the cluster which will then connect you to a new node. Most CIFS/SMB and NFS clients will be able to do this automatically. If you encounter problems with a network drive or mount after this maintenance try remounting.

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During the 3/23 maintenance it was discovered that the cluster was hanging on patches. Problem has been resolved but we will need to reschedule for the 3/30 maintenance window to have enough time to apply the patches now that the issue has been resolved.

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Contact the ITS Service Center for more information or to report additional impacts.