Pawsey Supercomputing Research Centre Status

Resolved: Askapbuffer

• There has been no signs of any volumes being marked as being inactive / or uncontactable after filesytem check was performed on all volumes served by Storage Array 05
• Debrief was given in the RTG group
• The vendor has confirmed from the support bundle, the replacement controller is working per normal

Monitoring: OST Filesystem Scan

• File system check was completed on the remainder Array Storage 05 LUNs/OSTs
• Only OST0024 presented issues which has to be corrected

Storage Controller replacement part

• Part Arrived during the remediation
• Storage Array 05 Controller A has been replaced
• Storage Unit looks correct, vendor storage bundle was collected to be submitted to confirm system health

Askap Ingest Cluster

• As with previous, the volumes with the problematic volumes ie inactive was locked and would not reconnect
• Cluster was rebooted to get a clean slate to re-attached the missing OSTs

Setonix

• The Setonix Data movers nodes reconnected to /askapbuffer once it was fully online
• Casda nodes reconnected to /askapbuffer" once it was fully online

Identified: Storage Volume becoming inactive / locked

• It's has been identified the other volumes that was attached to askapbuffer oss03 from Array 05 is developing similar issues to the other volumes that was checked
• "Askapbuffer" will be going down at 3pm AWST
• Where a filesystem check will be performed on the other OST volumes pertaining to Array 05 that sits on askapbuffer oss03
• Ie OST00[21,23,24,25,27]
• Systems with these volumes mounted on it will literally freeze until the filesystem is released

Monitoring: Filesystem "/askapbuffer" (5:15pm)

• After e2fsck on ost00[20|22|26] the volumes are now mountable / writable
• Partial nodes in the askapingest cluster was stuck and would not reconnect to the volumes which has been addressed ie
• "lfs check: error: check 'askapfs1-OST0022-osc-ffff9c33b8dd8800': Cannot send after transport endpoint shutdown (108)
• Askapingest cluster nodes were rebooted to get a clean state to enable remounting the filesystem

Monitoring: Storage Volumes OST00[22|26] have either become readonly or uncontactable

• The volume filesystem check is required for OST00[22|26]
• The storage volume pair will be taken offline to check these volumes
• Systems with these volumes mounted will freeze during this check until the filesystem is restored

After primary checks of OST00[22|26]

• Has been e2fsck

OST0020 has similar issues

• 4:05pm to address OST0020

Monitoring: Pre-emptive replacement on Controller A for Storage Array 05 is pending

• Vendor has indicated there is backorder for the replacement part and is delayed

Monitoring: We are continuing to monitor for any further issues.

Monitoring: Support Logs has been reviewed by the vendor

• Recommendation pre-emptively replacing "Storage Controller A"
• Part will be shipped, where "Storage Controller A" will be replaced in Storage Array 05 in "/askapbuffer" system

Monitoring: System has been restored

• We just waiting for a vendor review of support bundle logs before we close this incident

Monitoring: Storage Controller A has been restored for array05

• We are monitoring the storage controller A
• Storage Luns has restored High availability configuration access

Identified: We have identified an issue with the "Askap Buffer" lustre filesystem where

• Filesystem is functional / usable but in a degraded state
• Storage Array 05 no longer has high availability as "Storage Controller A" is non-functional
• There will be an attempt to remediate "Storage Controller A"